Know about Specifications of ASTM A420
For use in pressure pipeline and pressure vessel duty at low temperatures, seamless and welded wrought carbon steel, and A420 WPL6 fittings cover alloy steel pipe fittings . Materials must be produced using an open-hearth, basic-oxygen, or electric-furnace method. They must include forgings, bars, plates, and seamless or fusion-welded tubular products with added filler metal. The following processes must be used to execute forging or forming operations: hammering, pressing, piercing, extruding, upsetting, working, bending, fusion-welding, or machining. The chemical composition, tensile strength, yield strength, elongation, wall thickness, and Charpy V-notch impact value of steel specimens must all be within the prescribed ranges. While this specification does not require hydrostatic testing of fittings, all fusion-welded butt joints must undergo radiographic evaluation. Know about Stainless Steel forged fittings. The Forged Fittings produced by SS forged fittings m...