GB/T 9119-2010
AbolishedSlip-on-welding plate steel pipe flanges
板式平焊钢制管法兰
📚 References & Relations / 引用与关联
replaces
GB2506-2005
replaces
GB9119-2000
📊 Standard Timeline / 标准沿革
replaces
GB2506-2005
replaces
GB9119-2000