This specification applies to the construction and acceptance of industrial metal pipelines (hereinafter referred to as "pipes") whose design pressure is not greater than 42MPa and whose design temperature does not exceed the allowable service temperature of the material.
GB 50235-1997 history
2010GB 50235-2010 Code for construction of industrial metallic piping engineering
1997GB 50235-1997 Code for construction and acceptance of industrial metallic piping