Design standard: GB/T 12235
Structure standard: GB/T 12221
Flange standard: JB/T 79 HG/T 20592
Inspection test: GB/T 13927
Standards and specifications
Design standard: GB/T 12235
Structure standard: GB/T 12221
Flange standard: JB/T 79 HG/T 20592
Inspection test: GB/T 13927