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Test method for chemical composition of seamless tubes
Nov 29, 2017

The chemical composition of domestic seamless tubes, such as 10, 15, 20, 25, 30, 35, 40, 45 and 50th, which are supplied by chemical composition and mechanical properties, shall conform to the gb/t699-88 requirements. The imported seamless pipe shall be inspected according to the relevant standards stipulated in the contract. The chemical composition of 09MnV, 16Mn and 15MnV steel shall conform to the GB1591-79 regulations.
The specific analysis methods refer to the relevant parts of gb223-84 "Steel and Alloy chemical analysis method". Analysis deviation Reference gb222-84 "allowable deviation of chemical composition of samples and finished products for chemical analysis of steels".

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