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| International Standard Category: Flanges, couplings and joints |
GB/T 12459-1990 Steel butt - welding seamless pipe fittings
钢制 对焊无缝管件 ;
| Category No.: | 23.040.60 | Valid Status: | superseded |
| Issued Organization: | STSB | Issued Date: | 1990-08-21 |
| Implemented Date: | 1991-5-1 | Abolished Date: | 2005-08-01 |
| Superseded Standard.: | GB/T 12459-2005 Steel butt-welding seamless pipe fittings |
Superseded Date: | 2005-8-1 |
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