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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| DL/T 821-2002 |
The code of radiographic examination of butt welded-joints of pressure steels pipes and tubes 钢制承压管道对接焊接接头射线检验技术规范 |
China Electricity & Power
Standards Steel butt welded |
 English PDF |
| SH/T 3409-1996 |
Steel plate butt-welded fittings |
China Petrochemical Industry
Standards Steel butt welded |
English PDF |
| SH/T 3408-1996 |
Steel butt-welded seamless fittings |
China Petrochemical Industry
Standards Steel butt welded |
English PDF |
| SY/T 4056-1993 |
Methods for radiographic inspection and quality classification of welded girth butt joints in oil and gas steel pipeline |
China Oil & Gas Industry
Standards Steel butt welded |
English PDF |
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