post weld heat treatment A333
post weld heat treatment A333
(OP)
Do you need to PWHT fillet welds in A333 gr6 pipe
for propane duty down to -43degC ?
for propane duty down to -43degC ?
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post weld heat treatment A333
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RE: post weld heat treatment A333
Second question - are you sure about fillet welds or are these butt welds with external fillets applied like a branch connection or combination or are you welding attachments to existing piping? Please be specific.
RE: post weld heat treatment A333
RE: post weld heat treatment A333
RE: post weld heat treatment A333
RE: post weld heat treatment A333
I know B31.3 says no PWHT for P 1 materials but, do environmental conditions change the requirement for PWHT even though is not mandatory.
RE: post weld heat treatment A333
RE: post weld heat treatment A333
metengr answers your question explicitly. It's what I advised Reg anyway!!!
RE: post weld heat treatment A333
DSB123 - We don't usually get to know whether questions have been asked or answers given !!!
RE: post weld heat treatment A333
As metengr has stated, B31.3 does not require PWHT for the low temperature service. Furthermiore, it is not common practice to PWHT with the design described; however, service conditions, as determined by the designer, may dictate otherwise. "In such cases, the designer may specify more stringent requirements in the engineering design, including heat treatment.." (ref. 331.2.2)