This standard specifies the category and designation, dimensions and tolerances, technical requirements, hydrostatic test, inspection mark and package of the class-designated steel flanged fittings.
This standard is applicable to the steel flanged fittings with the nominal pressures of Class 150 and Class 300.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest editions of the normative documents (including all the amendments) are applicable to this document.
GB/T 9113-2010 "Integral Steel Pipe Flanges"
GB/T 9124-2010 "Specification for Steel Pipe Flanges"
