Which has stricter manufacturing and testing standards, seamless steel pipes 9711 or 5310?

2020-12-23View Original

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Which has stricter manufacturing and testing standards, seamless steel pipes 9711 or 5310?

Reply #22020-12-23

It seems the same – the 5310 model has more inspection items and stricter requirements, and its price is also higher than that of the L245 model. I compared the standards myself but couldn’t find any significant differences: L

Reply #32020-12-23

It seems that the 20# version of 6479 is similar to the L245 version of 9711

Reply #42020-12-24

GB9711 has a quality grade of B-1, while GB5310 has a quality grade of A-1; therefore, 5310 is of higher quality.

Reply #52020-12-24

But the price of L245 is a bit higher than that of 20G

Reply #62020-12-24

Could you please tell me where I can check the quality grade? handshake

Reply #72020-12-25

Implementation Guide for GB20801 \"Code for Pressure Piping – Industrial Piping\"

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