DIN 16831-6 E:1995-09 Pipe fittings and joint assemblies for polybutene pressure pipes - Type PB 125 - Part 6: Dimensions of fittings for resistance welding
2003DIN 16831-6:2003 Pipe fittings and joint assemblies for polybutene pressure pipes - Type PB 125 - Part 6: Dimensions of fittings for resistance welding
1970DIN 16831-6 E:1995-09 Pipe fittings and joint assemblies for polybutene pressure pipes - Type PB 125 - Part 6: Dimensions of fittings for resistance welding