Quality standard of reducer

Author : admin

Update time : 2020-11-19 10:10:56

　　The quality of the reducer should comply with the current national standards "Steel Butt Welding Seamless Pipe Fittings" GB/T 12459-2005 and "Steel Butt Welding Pipe Fittings" GB/T13401-2005. The roundness of the reducer should not be greater than 1% of the outer diameter of the corresponding end, and the allowable deviation is ±3mm;

　　The allowable deviation of the reducer size should meet the requirements of Table 4.2.2-3. The material of the reducer is in accordance with SY/T5037, GB/T9711, GB/T8163, American standard ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM A234, ASTM A106, DIN German standards and customer requirements.

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