WCB
WCB is an abbreviation of Wrough Carbon grade B.
WCB is covered by ASTM A216 standard, which specification covers carbon steel castings for valves,
fittings, flanges and other pressure-containing parts for high temperature service and the quality
required for assembly with other castings or wrought steel parts by fusion welding. These grades
are all "cast" grades meaning they are made through "casting" which is a manufacturing
process where a liquid material is poured into a mold and allowed to harden.
WOL
WOL is an abbreviation of WeldOLet.
Weldolet® is a registered name by Bonney Forge Corporation.
WPQ
WPQ is an abbreviation of Welder Performance Qualification.
The Welder Performance Qualification document is required by all codes for all welders.
WPS
WPS is an abbreviation of Welding Procedure Specification.
The Welding Procedure Specification is a required document for all code welding.
WT
WT is an abbreviation of Wall Thickness.
The Wall Thickness in piping terms is defined as schedule (SCH or S) and stands for the wall thickness
of pipes, fittings, and some flanges.
