Steel Pipes - ASME/ASTM Fittings - ASME/ASTM Forged Fittings - ASME/ASTM Flanges (ASME/ASTM) Types Welding Neck FlangesSlip On FlangesLap Joint FlangesBlind FlangesSocket-Weld FlangesTheaded FlangesLong Welding Neck FlangesReducing FlangesOrifice Flanges Norms acc. ASME B16.5 / EN1759-1acc. BS3293acc. ASME B16.36acc. ASME B16.47 Series B – API STD 605acc. ASME B16.47 Series A – MSS SP-44 Pressure Ratings 150 LBS300 LBS400 LBS600 LBS900 LBS1500 LBS2500 LBS5000psi10000psi Wall thicknesses Available in all wall thicknesses Facings RF – LRF – RTJ Dimensions 1/2″ – 60″