Standard Number: SY 4056-1993(SY4056-1993)
Chinese:石油天然气钢质管道对接焊缝射线照相及质量分级
English:Radiography and Quality Grading of Butt Welds in Oil and Gas Steel Pipelines
Effective Date:1993-09-01
Standard Applicability:
PDF Downloadable: N
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