CB/T 50-2008
船用对焊钢环松套钢法兰
Marine welding neck steel outer composite flanges
2008-03-17
CB/T 3212-1999
船用搭焊、对焊、铜管折边松套、异径钢法兰
Lap Welding. Balanced welding. Copper pipe flanging free Flared steel flange for marine
1999-04-30
CB/T 49-2007
船用搭焊钢环松套钢法兰
Marine combination pipe flanges of slip-on steel outer flanges of fillet weld-on steel inner flanges
2007-03-23
GB/T 15530.6-2008
铜管折边和铜合金对焊环松套钢法兰
Loose plate flange in steel with a copper pipe or a weld-neck collar in copper alloy for welding
2008-08-25