What standard does a 30MPa steel pipe comply with?
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May I ask what standards apply to steel pipes with a pressure rating of 30 MPa and dimensions of 89×12? What are the standards for the elbows and spherical end caps that are used with them?
For steel pipes with a pressure rating of 30 MPa and dimensions of 89×12, the applicable standard is GB6479-2000; the material used is 20#, and the series code is GY3. The accompanying elbows and spherical ends comply with the standard CH26-2007 (issued by Chengde High-Pressure Valve Factory; this manufacturer can be found by searching online)
For steel pipes with a pressure rating of 30MPa and dimensions of 89×12, the standard GB/T8163 applies; elbows are governed by standard GB/T12459
Does GB/T8163 specify that it cannot be used at pressures above 16 MPa?