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ASME BPE 2022 - Coggle Diagram
ASME BPE
2022
chapter 5
PROCESS COMPONENTS FOR MULTIUSE
DT-8 weld ends
Austenitic stainless steel
material requirment
MM 2.1-1 & MM-2.1-3
Autogenously welded
(Automatic welding)
Chemical composition requirement
As per MM-5.2.1.1 (a)
Sulfur content 0.005% and 0.017%
Free from burrs and breaks
Furnished with square cut ends
For nonautomatic welding
ASTM specification
ASTM A312/A312M: Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
A778/A778M: Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products
Unobstructed weld end length
equal to or greater than the minimum control portion as per DT-7
DT-7.1 Fitting and Process Component Tolerances
Table DT-3-2: Final Tolerances for Electropolished Fittings and Process Components, Excluding Tube
Control portion of the fitting surface
till C dimension maintains the wall thickness and OD
Exception
Table DT-4.1.4-1
Automatic Tube Weld: Ferrule
Table DT-4.1.5-1
Automatic Tube Weld: Cap
0.75in (19mm)
Table DT-3-1: Final Tolerances for Mechanically Polished Fittings and Process Components, Excluding Tube