Circular Flanges for Pipes, Valves and Fittings (Class Designated) - Part 3: Steel, Cast Iron and Copper Alloy Flanges - Section 1: Specification for Steel Flanges
管道、阀门和配件用圆形法兰(指定类别).第3部分:钢、铸铁和铜合金法兰.第1节:钢法兰规范
Specifies Class 150 to Class 2500 and sizes up to 24 in. Requirements facings, dimensions, tolerances, threading, bolt sizes, marking, materials for bolting and flange materials with associated pressure/temperature ratings.