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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 17604-1998 |
Rubber--Recommendations for the workmanship of pipe joint rings--Description and classification of imperfections 橡胶 管道接口用密封圈制造质量的建议 疵点分类与类别 |
China National Standards workmanship |
 English PDF |
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