QB 1109-1991
Stainless steel and copper pipe connectors (English Version)
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QB 1109-1991
Standard No.
QB 1109-1991
Language
Chinese,
Available in English version
Release Date
1991
Published By
轻工业部
Latest
QB 1109-1991
QB 1109-1991 history
1991
QB 1109-1991
Stainless steel and copper pipe connectors
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