question and answer

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

thx

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Answer from Werner Sölken

Hi Ali,

Size on Size:
Inner dia of the o'let is roughly equal to inside dia of header pipe

Reducing o'let:
Inner dia of the o'let is always smaller, as the inside dia of the header pipe

Wall Thickness:
Specification of the o'let: depends on the pipe spec wall thickness

Weldolet Size on Size

Weldolet reducing

Above illustrations should give you an impression...

greetings Werner

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Answer from Werner Sölken

Hi Umair Ahmed,

Both mean the same.

Circumference of the pipe:

x diameter

= 3.14

Diameter = 14 inch
3.14 x 14 = 43.96 inch circumference
Multiply that times the number of weld passes.

Q: May I know what you want to calculate?

greetings Werner

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Answer from Werner Sölken

Hi Umair Ahmed,

I think I understand what you meant (or what your client intended).
After next weekend, you will find my answer.
I wish you and your family a special New Year 2012.

greetings Werner

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Answer from Werner Sölken

Hi Nguyen Anh Tung, (Sorry for my late reply)

Example:
You have a straight pipeline where at one end a flange Class 150 is mounted and on the other end a flange Class 300.
In the middle of that line you have made a weld that indicates a spec break from Class 150 to Class 300.

If a pressure test is needed for that pipeline you have a little problem.

Officially, the line must be tested at the lowest pressure class, in your case Class 150.
That means that Class 300 can not be tested on the appropriate values.

Solution:
A flange connection, instead of the weld gives the ability to pressure testing both parts of the pipeline.
Generally a spec break is almost always at a flange connection, with or without a valve.

Maybe there are other solutions, but then I know the pipe thickness (Schedule) of both systems.

greetings Werner

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Answer from Werner Sölken

Hi Suhas Anil,

Look at the links below, you will find a brief explanation about your question.

Victaulic® pipe joining systems

Cam Lock and Chicago quick connectors

greetings Werner

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Hi Suhas Anil,

You're one of the few to say thank you!

greetings Werner

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Answer from Werner Sölken

Hallo Cees,

Bedankt voor de foto. We spreken elkaar nog wel (eens).

greetings Werner

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Answer from Werner Sölken

Hi Jeyhun

Method for Calculating Stud Bolt Lengths

greetings Werner

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Answer from Werner Sölken

Hi Mohamed Abdelbari

YES / NO

If your customer demands, that no "flange connections" in the pipe line may be used, my answer is not needed.

greetings Werner

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Hi Mohamed,
Costs are the most important factor when building a new plant, unfortunately.
What I can tell you: there are no standards that may or may not allow flanges.
I will write a new short article about your question.

greetings Werner

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Hi Mohamed,

Look at de bottom of this page

greetings Werner

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

Hi Yanhua

TYPE R RING GASKET DIMENSIONS AND TOLERANCES ACC TO ASME B16.20 USED WITH RTJ FLANGES ACC TO ASME B16.5 and B16.47 SERIES A

greetings Werner

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Answer from Werner Sölken

Hi sajjad noruzi

Answer on question one: www.wermac.org/valves/valves_pressure_relief.html

Answer on question two: www.wermac.org/pdf/set_point_testing.pdf

greetings Werner

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Answer from Werner Sölken

Hi John

More than 1000 words can not tell, what I can tell by an image or animation.

greetings Werner

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Answer from Werner Sölken

Hi Joe

Ask what you want, I'll try to answer.

greetings Werner

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Answer from Werner Sölken

Hi Steven Ng

greetings Werner

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Answer from Werner Sölken

Phil...thanks for your compliments

greetings Werner

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Answer from Werner Sölken

Lieberman, why do you think that wermac.org originated from an egg ?
You have no idea what to offer !.
Therefore you ask me, in order to supplement your list with prices.
Ask your manager (Helene Kunz) if your practices are allowed...and please, do not contact me anymore.

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Answer from Werner Sölken

Hello Dietmar,
I can recommend several suppliers in Germany, they can deliver what you ask.
Why do you ask www.wermac.org ?

greetings Werner

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Answer from Werner Sölken

A concentric or eccentric reducer gives you what you want...I think.

greetings Werner

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Answer (acc. to BPVC) from Werner Sölken

1 & 4. See ASTM A106 and the difference with ASTM A53

2. SA means that the ASTM standard has been approved / adopted by the BPVC
(Boiler & Pressure Vessel Code by ASME).
Examples:
ASME says about ASTM A53: there are no differences.
ASME says about ASTM A106: Identical, except for editorial differences at 8.1, 13.4, and 24.1 and deletion of ASTM caveat 1.5 (these are articles referring to the BPVC).

3. Yes, you can use A53 standard instead of A106, but you need permission from your engineer. There are differences in the two standaads.

greetings Werner

PS:  New page since October 30, 2011 ASTM A... OR ASME SA...

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Answer from Werner Sölken

Hi K.V.Kamath

Your question is simple, and my answer even: NO

Why did the engineering company has been determined an RTJ connection ?.
Ask your engineer, and he will tell you why.
In the near future, I will write an article about RTJ vs RF.

greetings Werner

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Answer from Werner Sölken

Hi John Craychee

Which pressure class has the socket weld side (after the valve) ?

greetings Werner

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Answer from Werner Sölken

Hi Shamie Ramroop

At the bottom of Corrosion Allowance you will find the "Remark(s) of the author".
That is my answer to your question.

greetings Werner

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Answer from Werner Sölken

Hi Safwan yousef, Algeria

On December 21, 2008, this website is officially online and is continuously expanded
(see "about" at the top of my website).

In the near future, all your questions or recommendations will be answered by me.
Have a little patience.

greetings Werner

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Answer from Werner Sölken

Hi Mehul Mehta,

EPCM stands for Engineering, Procurement and Construction Management, at least I know.
There are many different opinions, do a Google search.
The EPCM Consultants Homesite says "We Provide a range of project services, from feasibility studies to commissioning and operations support".
To make matters more confusing, there's another acronym sometimes, namely EPC. Is EPC different from EPCM ?
I am sorry I can not help you.

greetings Werner

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Answer from Werner Sölken

Hi Jose,

Coincidence?
2 weeks ago I ordered 4 of these valves.

Your question
Me gustaría saber como se los dibuja and P&ID welding flange ball valves deadman, because i do not have this symbol.

In the pictures, you have send with your email, I see ball valves.
Use the ball valve symbol.

Later, when the isometrics are made:
Make a note directly at the valve.
In the long text of your note, you can give more specifications about the that valve(s).
Note: it is better to refer to a specification that comes from the customer.

greetings Werner

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Answer from Werner Sölken

Hi Giovanny,

A connection between a RF flange and a RTJ flange, is actually not possible...

greetings Werner

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Answer from Werner Sölken

Hi James,
Here in the Netherlands, the petrochemical and chemical industry, are very skeptical about FRP and other "non STEEL piping".
I was involved in a project, FRP pipes which were used as test.
The project wast considered positive, but the whole project wast canceled.

About Jacketed pipe.
One of my projects, jacketed pipe, was a complete challenge, compared to my normal activities.
I made isometrics and 3D models for the customer to explain what I intended.
Nobody understood.
I have (with permission), to carry out the change, and it works perfectly.

For jacketed systems, you need a person who is familiar with that sort of systems.

Your question:
Do you have any plans on adding plastic, FRP or jacketed pipe and fittings to your website?

My answer:
Not at this time.
Perhaps you have a reason why I should take this into my website.

greetings Werner

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Answer from Werner Sölken

Hi Maria,
Thanks for your compliments on my website.
If I can help you with your final project, let me know.

greetings Werner

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Answer from Werner Sölken

Hi James,
Thanks for your compliments on my website.
I will continue to provide information, to anyone who is interested.

Unfortunately there are people who abuse my site. Recently I found a "Company" that has copied all content of my entire site, and has it put online under its own name.
I hope that Google and the provider of that person or company can stop this illegal activity.

greetings Werner

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Answer from Werner Sölken

Hi Mbuso Yende,
I can not give a answer to your question.
At the moment I work for a company that needs refrigeration units in their daily process.
They use the knowledge of http://www.johnsoncontrols.com/publish/us/en.html

greetings Werner

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Answer from Werner Sölken

Hi Arun,
There is a lot of knowledge and work needed, to prefab uneven pipe diameters and may be with different wall thicknesses.
I can not tell from my website how to do that. This is purely a matter of experience.

What I can tell you is: make sure that the preparation (made by your pipefitter) can not be changed during welding.

greetings Werner

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Answer from Werner Sölken

Well, my name is Werner,
which code (ASME, DIN, or whatever), the reactor is designed ?.

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

Hello,
I can not help you with your inquiry. I assume that in your specification, bolts and nuts in the quality 21CrMoV5-7 / W1.7709 be requested. There is a reason why this quality is specified. Option, discuss the alternatives with your client.

greetings Werner

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

Hi Mike,

YES

greetings Werner

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

Hi Karl,
Normally I place these mails not in "Question and Answers".
But if you've met my wife I make an exception! :-}
Of course I'm very happy that I maybe you and your colleagues can help.
A general answer on flanges, I can not give, but they are the most important components in a pipe line system.
All questions of your colleagues are welcome.

greetings Werner

PS: I've changed some names

I'm not a manufacturer of piping materials and accessories. My website is designed for people who want to know more about piping systems etc..

Answer from Werner Sölken

Hello Stanley,
The pressure-temperature ratings, including all use recommendations and limitations, and the method of rating given in ASME B16.5 apply to orifice flanges acc. to ASME B16.36.

greetings Werner

Answer from Werner Sölken

Hello Ron,
The answer is simple: ASME B16.5 gives no tolerances for bolt hole diameters, not even the latest version 2009.

ASME B16.5 Pipe Flanges and Flanged Fittings
Published Interpretations

Interpretation: 2-7
Subject: Bolt Hole Tolerances
Date Issued: June 18, 1990
File: B16-90-09
Question: Does B16.5-1988 have any requirements for tolerances on bolt hole diameters?
Reply: No.

greetings Werner

Answer from Werner Sölken

Hi Steve,
Good question which many possible answers.
I have worked for a company where many TG flanges were used, and where nearly all male ends point in the flow direction. Except for valves, both sides of their valves were female.
I have searched many ASME and API standards. I have found no rule that defines a orientation or flowdirection for TG flanges.
I think every company makes their own choices, and no official specifications have been made.

greetings Werner

Answer from Werner Sölken

Hello Peter,

Powder welding is a non-fusion form of gas welding in which a modified oxyacetylene torch serves as both a powder supply and heat source.
The melting point of the deposited powder is below that of the base iron and when the base iron surface reaches a certain temperature, the deposited powder coating melts and "wets" the casting surface.
Subsequently the weld is built up as the preheated powdered alloy continuously melts as it impinges on the wetted surface.
Powder welding does not fuse the base iron and the success of the weld is determined by the development of a diffusion bond.
Powder welding has several limitations. It is slow, expensive and is restricted to horizontal welding. Although the casting is not heated to its melting point, sufficient heat may be applied to cause distortion in complex castings.
Powder welding is used for defect repair, cladding and joining high alloy irons.

Check out: Ductile Iron Society

greetings Werner

Answer from Werner Sölken

Hello Bill,

Thanks for your compliments on my website.

I have corrected the error to "Working pressures by classes, BAR"; thanks for the tip.

For the difference in Piping Isometrics (ISO's) and Piping Arrangements, see main menu "DOCS". (a piping plan is similar to a piping arrangement and is used almost everywhere)

Soon I will show additional drawing examples.

greetings Werner

Answer from Werner Sölken

Hello Juan,

Thanks for all your compliments.

In the article about the Author of this website I write:
I have tried to make a website with a clear structure, "what your click is what you get".

I also try to write articles that give a user a certain base on a topic. It is not always easy to define a subject well.
I do not know who will be reading a article; is it someone with extensive experience ? or is it a beginner ? or is it ?... etc. etc.

Well, I'll continue to do my best to satisfy everyone.

greetings Werner

Answer from Werner Sölken

Hello Mandela I.Truman,

Depending on the browser you use, remove the history regularly.
I add items daily, but I do not want to do this with various icons to indicate.

For several days I tell on my website a few things about ASTM A333.
Perhaps you have not read, or you can not read.
Look at ASTM A333. At the bottom of that page you will find an explanation.

If that explanation is not sufficient, I ask you to think about spheres where gas (Propylene, LNG, etc.) is stored. Why we used killed steel ?...the answer is already given.

greetings Werner

Answer from Werner Sölken

Hello Mandela I.Truman,

Check out: Lap Joint Flange. On that page you will find an example of a backing flange.
Backing flanges are loose flanges that in piping systems can be applied, and they are available in many different versions.
Itself the flange is not welded or fixed in any way. It is free to spin for clean alignment with whatever it is joining to.

greetings Werner

Answer from Werner Sölken

Hello Ali,

check out: bellow sealed valves

greetings Werner

Answer from Werner Sölken

Hello Chad,

Sorry for my late reply.
I do not know what you meant by: people like me (joking)
Believe me, experienced engineers and other experienced people occasionally look at my website.

greetings Werner

Answer from Werner Sölken

Hi Deepu,

ASME B31.3 para 328.5.4 has nothing to do with orifice plates and flanges, mistake of mine.

Thanks for the tip and thanks for your other compliments.

greetings Werner

Answer from Werner Sölken

Hi Mr. Vu Tat Tuan,

API 598 covers inspection, examination, supplementary examinations, and pressure test requirements for resilient-seated, nonmetallic-seated (e.g. ceramic), and metal-to-metal-seated valves of the gate, globe, plug, ball, check, and butterfly types.

API 6D International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems meeting the requirements of ISO 13623 for the petroleum and natural gas industries.

Occasionally the chemical or refinery valve specifier will see reference to API 6D - "Pipeline Valves". This document is a thorough standard covering the design, materials and dimensions of valves for pipeline service. The most common reference for non-pipeline use are the testing requirements which differ slightly from API 598. The primary difference being 6D's zero allowable leakage on closure tests. Since most of the valves built to API 6D are resilient seated, this is no problem, however when the test standard is applied to metallic seated wedge gate, globe or check valves, compliance can be difficult.

greetings Werner

Answer from Werner Sölken

Thanks for the compliments on my website...and yes it's a lot of work to update a website every day.

greetings Werner

Answer from Werner Sölken

Hi,
Monel 400 is a versatile nickel copper alloy with good strength and toughness, combined with outstanding corrosion resistance, while UNS S31803 is a 22% chromium, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Chemical Composition % Monel 400

• Carbon (C) = 0.3 max
• Maganese (Mn) = 2.0 max
• Silicon (Si) = 0.5 max
• Sulphur (S) = 0.024 max
• Nickel (Ni) = 63.0 min
• Copper (Cu) = 28.0 min - 34.0 max
• Iron (Fe) = 2.5 max

Chemical Composition % UNS S31803

• Carbon (C) - 0.03 max
• Maganese (Mn) = 2.0 max
• Silicon (Si) = 1.0 max
• Sulphur (S) = 0.015 max
• Phosphorues (P) = 0.035 max
• Chromium (Cr) = 21.0 min - 23.0 max
• Nickel (Ni) = 4.5 min - 6.5 max
• Molybdenum (Mo) = 2.5 min - 3.5 max
• Nitrogen (N) = 0.10 min - 0.22 max

As you can see, there are important differences in both materials.
My tip: Do not deviate from your specification, and do it only if you have your customer's written consent.

greetings Werner

Answer from Werner Sölken

First, thanks for the compliments on my website.

Do you understand my question ?...Yes and No.

Have the Tees internal or external coatings, or both ?.
Normaly, after hydrotesting and other NDE, pipes, flanges and fiittings will be painted.

At the moment, unfortunately I can not go to answer your question...I have no more than a mobile in my hands.
Next Monday, I can tell you more...I'm sorry.

Werner

Second answer from Werner Sölken

During Hydrotesting the crotch areas expand the most, is completely correct.

The wall thickness around the crotch must be have at least a factor of 1.3 of the normal wall thickness...I think with a 30 inch tee is not.
And that's the problem with your coating.

See the article about "crotch" on my website:
www.wermac.org/fittings/buttweld_fittings_part3.html

Most companies make it simple, they are use a higher schedule size as the minimum allowed wall thickness.

Werner

Answer from Werner Sölken

Hi Gilles,
Dowel Pins are hardened and precisely shaped pins.
They are used to keep machine components in accurate alignment.
So, you're right with your conclusion.

Although:
The use of dowel pins to guarantee positional security of rotating machinery is not recommended.
The use of dowel pins to guarantee positional repeatability is also not recommended.

This is the conclusion of a study made by: Alan Luedeking
He is the manager of alignment technical support and training for Ludeca Inc.
He can be reached at 305-591-8935 or alan.luedeking@ludeca.com.
For more information on Ludeca, visit www.ludeca.com.

greetings Werner

Answer from Werner Sölken

What is Fluorocarbon Coating ?

Fluorocarbon coatings are formulated from the family of Fluoropolymers, which includes Teflon® and others and exhibit many of the properties associated with these unique materials.

Utilizing the chemistry of carbon and fluorine, fluorocarbon coatings impart properties not attainable with other organic coatings when applied over suitable substrates: outstanding chemical and corrosion resistance, non-wetting surfaces, exceptional thermal stability, extremely low coefficient of friction and excellent non-stick qualities.

Fluorocarbon coatings can extend the life of moving parts; maintain the purity of pharmaceuticals and chemicals; insure perfect molded parts; reduce maintenance and downtime; improve sales; produce uniform baked goods; reduce the possibility of electrical shock; improve the performance of medical instruments.

Material specs are not there for nothing

In your material specification blue coated carbon steel studbolts are defined. Your customer will have a reason why the bolts and nuts must be blue colered carbon steel. You should not ask yourself whether an alternative is acceptable. Your customer determines what should be used.

Your supplier proposes to use stainless steel bolts with a black fluorcarbon coating.
My tip: Do not deviate from your specification, and do it only if you have your customer's written consent.

greetings Werner

Answer from Werner Sölken

ASME B16.47 gives the same H size as in my table (see attached asme_b16.47_series B.gif). I have checked the old API STANDARD 605, and there is another height specified and suppliers of these flanges specify the same H size as API 605.
I think ASME has made a small mistake.
Thanks for the tip...I have changed the H dimensions.

greetings Werner

Answer from Werner Sölken

Hi Robert,
Metric pipes and fittings often have different wall thicknesses as ASME (earlier ANSI).
Metric flanges usually have different bolt circles and will not fit on ASME flanges.
Metric thread is not equal to NPT thread, mostly in Europe, Whitworth thread BSP (British Standard Pipe) applied.
I think that's not a good idea to use both standards together.
By the way:
Nominal Pipe Size (NPS) and Diameter Nominal (DN) are dimensionsless designators for pipe sizes.
DN 32 is a designator for pipe 1 1/4" equal to NPS 1 1/4 (without an inch symbol)
DN 25 is a designator for pipe 1" equal to NPS 1 (without an inch symbol)

Werner

Answer from Werner Sölken

Hello Zulkaini,
Your questions concern a so-called piping specification break, in piping terms a "spec break".

A "spec break" happens where there is a change from one significant design condition to another, below a few examples:
- transition from high to low pressure
- transition between high and low temperature service
- transition between corrosive and non-corrosive environments

In your example, the piping system change from stainless steel to carbon steel (or vice versa), where pressure class and gasket material do not change.
The break are two 150 lbs flanges, one of CS (A105N) with bolts, nuts and washers for High-Temperature applications, the other SS (F316L) with bolts nuts and washers for low-temperature applications.
For the flange connection, bolts, nuts and washers from both materials can be used, depening on customer requirements.
Corrosion problems: I suspect that your client has thought about, otherwise he would not move from Stainless steel to Carbon steel.

Werner

Answer from Werner Sölken

Hello Brandon,
Look at the site of: Bonney Forge

Werner

Answer from Werner Sölken

Hello Reinaldo,
MSS SP43 has two types of stub ends, namely A & B.
A is used with Lap Joint flanges
B is used with Slip-On flanges
The Type "A" has its outside corner radiused to accommodate Lap Joint flanges. The inside corner is square.
The Type "B" has an outside corner radius small enough to accommodate Slip-On flanges that are being used as the Backup Flange. The inside corner is square. Occasionally, if a Slip-On type flange is used, chamfers on the I.D. face of the flange are required for a good joint.

Werner

Answer from Werner Sölken

Hello Dave,
thanks for your compliments on my site.

Kele Inc. is well known. In the past I did business with your company. At that time I worked for Shell or Exxon, but for now I can not remember which project it was.

Werner

PS: Bedankt voor de informatie...perfect dutch!!

link to Kele, Inc.

Answer from Werner Sölken

Hi Gilles,
See menu > flanges > definition and details of flanges > flange types > slip on flange.
Please also read the disadvantages of Slip-On-Flanges.

Werner

Answer from Werner Sölken

Hallo Pieter,
Hele "inches" was toch bijna goed ?!?...

THX for your compliments for my site.

Werner

PS: ik keek vanavond weer eens op je site...oud-medewerker van Tebodin

Answer from Werner Sölken

Hi Gilles,
In a few weeks you will find an article about double block & bleed valves. At the moment I can not help.
On the websites of the following companies you probably will find what you need.
Cameron International Corporation on http://www.c-a-m.com/
Brdr. Christensen ApS on http://www.bch.dk/
Alternative: Use two valves in series, with a short piece of pipe between them, in which a drain valve is mounted.
First gives you your double block, second gives you your bleed.

About Insulation: I have not enough knowledge to give you an acceptable answer.

Werner

PS: menu > valves > plug valve
on the right of that page you will find a link to a large picture of a DBB plug valve

Answer from Werner Sölken

give me two weeks ... and you get what you ask

Werner Sölken

Answer from Werner Sölken

Hello Yomn Ehab,

Sorry, but I'm not a buyer, manufacturer or supplier of piping materials.
My website is designed for people who want to know more about piping and piping systems etc..
At the top of this (and other) pages of this website, you will find links; on that page you can find some suppliers.
If they can't make a offer, or they can't deliver what you ask, let me know...

Werner Sölken

PS: Why log-on is required on your website ?

Answer from Werner Sölken

Hallo Robert,

Toen ik je email had gelezen dacht ik...dom dom dom, ik had hem een antwoord beloofd. Het spijt mij Robert !.

Wellicht kunnen wij eens rustig met elkaar "bellen". Wat ik te vertellen heb, is teveel om hier neer te schrijven.

People
In my interpretation:
Robert and his care, peace and knowledge make him the best engineer I know.
He always listened to people from the field..do you ?

Ik bel je
Werner

Answer from Werner Sölken

First, thanks for your compliments on my site...I really appreciate

Can I circulate it only with our trainees?...Yes, my website is freely accessible, but see copyright and disclaimer of www.wermac.org

If you include following topics also will add big value to your web site...
www.wermac.org permanently expanded...everything you have listed, in the coming months will be added to my website.
In addition, I will also explain isometric drawings, piping and instrumentation drawings, pipe class specifications etc..

Werner Sölken

Answer from Werner Sölken

Dear Ms (Mr) Shahin,

Sorry, but I'm not a manufacturer or supplier of piping materials.
My website is designed for people who want to know more about piping and piping systems etc..
At the top of this (and other) pages of this website, you will find links; on that page you can find some suppliers.
If they can't make a offer, or they can't deliver what you ask, let me know...

Werner Sölken

Answer from Werner Sölken

Sreenath,

You are right, the image on the right was wrong. Meanwhile I have made changes, and now it is correct...thanks for your message.

Werner Sölken

Answer from Werner Sölken

Gilles,

At the top of each page of www.wermac.org you will find "question".

Dimensions of Weldolets: Main Menu...Fittings...Dimensions Weldolets (serious data).

Werner

Remark: Werni..I have never heard, tell me more...

Answer from Werner Sölken

I know your company from the past, our order was delivered correctly and "on time".
Below, I've created a link to your site.

sonderschrauben güldner

Good luck, Werner

Answer from Werner Sölken

Great that my contribution helps you too ... much success as a translator.

Werner

Answer from Werner Sölken

I think a Weldolet of this size should have been manufactured. This is not a standard fitting, so I can´t give you any details.
By the way, in this large size often a stub-in is a better and cheaper alternative.
See mainmenu "Others" article Reinforced Branch Connection.

Good luck

Werner

Answer from Werner Sölken

Hijlo stands voor high-low, and the correct abbreviation is Hi-Lo.
Hi-Lo is a typical piping term and indicates a internal misalignment between a pipe, flange or fitting. The most common cause of Hi-Lo is the roundness of pipes, fittings and flanges, especially for large diameters and thin wall thicknesses.
A welder noticed this immediately, and if the welds radiographic must be examined, the misalignment must be corrected. Perhaps you also need to talking with your pipefitter(s) for better preparation.

Werner

Answer from Werner Sölken

Thanks for your comments...appreciation for others in this world is an exception.
I would like to use your experience, so I have send my private email address to you.

Werner

Answer from Werner Sölken

That's true ... I'm working on it, wait a week and you get what you want.

Werner

Answer from Werner Sölken

zie main menu "Documents" Piping Coordination Systems - Dimensioning from Reference Points -

Werner

Answer from Werner Sölken

Sie gucken gut !. Im Moment gebe ich alle Abmessungen bis 24 Zoll. In den nächsten Monaten werde ich meine Website ausbreiten. Tut mir leid. Schreiben Sie mir die Abmessungen, die Sie wünschen; dann werde ich sie in diesem Forum vermelden.

Werner

Answer from Werner Sölken

Die Abmessungen in Millimeter für den Welding Neck Flange NPS 26 - 150 Lbs (Vorschweissflansch) acc. to ASME B16.47 Series A sind:

1. A = 676.1
2. D = 870
3. B = 68.3
4. G = 749.3
5. K = 806.5
6. H = 120.7
7. OD = 660.4
8. Anzahl der Schraubenlöcher = 24
9. Durchmesser der Schraubenlöcher (L) = 35.1

Werner

Answer from Werner Sölken

Main menu "Others", Method for Calculating Stud Bolt Lengths

Werner