... Weld & Socket Weld & Thread FlangesOur Flanges are drilled (machined) with the wall thickness of the flange having the same dimensions ... these flanges in different dimensional and material specifications based upon the requirements of the clients.Stainless Steel : ASTM A 182, A ... , DIN2636, DIN2637, DIN2638, DIN2673B.S : BS4504 , BS4504, BS1560, BS10 Professional Stainless Steel Flanges Suppiler