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| Standard Insuued on: 1999-12 |
SN/T 0821-1999 Rules for the inspection of welding drill pipes for import and export
进出口石油对焊钻杆检验规程
| Category No.: | SN | Valid Status: | superseded |
| Issued Organization: | Issued Date: | 1999-12-01 | |
| Implemented Date: | Abolished Date: | ||
| Superseded Standard.: | SN/T 0821-2011 Rules for the Inspection of Drill Pipe for Import and Export |
Superseded Date: | 2012-4-1 |
SN/T 0801.6-1999
SN/T 0822-1999
SN/T 0839.1-1999
SN/T 0821-1999
WS/T 121-1999
SN/T 0820-1999
JB/T 50003-1999
GB 7000.11-1999
GB 7000.13-1999
YZ/Z 0001.1-1999
SL/T 4-1999
SL 249-1999
HG/T 20579.3-1999
HG/T 20646.4-1999
HG/T 20579.1-1999
HG/T 20646.2-1999
HG/T 22814-1999
HG 21604-1999
HG/T 20646.1~20646.5-1998
HG 21602-1999
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