Standard for weld procedure qualification of oil and gas metal pipeline
实施日期:2002-08-01
The code of ultrasonic inspection section for butt welds of pipes
实施日期:2002-09-01
Welding and acceptance standard for steel piping and pipelines
发布日期:2006-07-10 实施日期:2007-01-01
Regulation on Welding Technology for Gas Supply Polyethylene Pipe
发布日期:2006-10-27 实施日期:2006-10-27
Welding and acceptance standard for steel pipings and pipelines ...
实施日期:1996-06-01
Technical code for welding of gathering and transmission pipeline in highly hydrogen sulfide gas field
发布日期:2010-08-27 实施日期:2010-12-15
实施日期:2007-02-01
Welding specification of combustible medium piping in acid service condition
发布日期:2012-11-07 实施日期:2013-03-01
实施日期:2006-11-01
Technical specification for electric heat method of eliminating pipeline welding residual stress
发布日期:2012-08-23 实施日期:2012-12-01
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