... , Offshore, Gasoline, Water Systerm,etc 3.Reliable Quality ANSI Carbon Steel FlangeForm:Socket Weld,Slip on,Blind,Lapped,Screwed,Weld Neck ... ,Long Weld Neck,Reducing, Spectacle,Ring JointSize rating:DN10--4000 mmPressure rating:class 150LB,300LB,400LB ... -20-31175628Fax:0086-20-31175318 Certificate: Our Products: ANSI Carbon Steel Flange