... ,BS Pressure grade:PN2.5-PN40 Punch & stamp parts Flangeforged partspunch partcastingsMaterial: cast iron , steel and aluminiumWe ... Welding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, Blind Flange, Orifice Flange, Ring Joint ... with machining such as electromotor parts, valves parts, pump parts, vehicle parts, marine parts and other machinery parts, materials are as follows: 1 ...