Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges-Specification for cast iron flanges
管道、阀门和配件的圆形法兰（指定等级） 钢、铸铁和铜合金法兰
1990-03-30
DIN 2874
Flanged steel pipes and flanged steel or cast iron pipes and fittings with PTFE or PFA linings - Technical delivery conditions
内衬PTFE或PFA的钢法兰管及钢和铸铁法兰配件.技术规范
2002-06-01
BS 1560-3-1-1989
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
1989-01-01
DIN 2848
Lined flanged steel pipes and flanged steel or cast iron fittings rated for pressures of (PN 10), 25 bar (PN 25) and 40 bar (PN 40)
法兰钢管和带衬里的法兰钢或铸铁配件-PN 10、PN 25和PN 40