(Hydrostatic test, hardness test, tensile test etc) ASTM A234 steel pipe fittings dimensions The cooling rapid shall be not more than in the air.ģ, Suitable inspection shall be performed after manufacturing. And no defects shall be made during the cooling procedures. Or the processes of combination of two or more of these operations.ĭuring the manufacturing steel pipe fittings, below activities shall be noted:ġ, Injurious imperfections, welding defects shall be not created.Ģ, After shaping or forming the fittings in a suitable temperature, it shall be cooled in a appropriate environments to a temperature that below the critical range. As well as pressing, hammering, piercing, extruding, upsetting, rolling, bending, fusion welding and machining. The manufacturing processes for pipe fittings includes forging and shaping operations. Steel pipe fittings manufacturing forming processes Thus the welded steel pipe fittings covers the fittings raw material from welded steel pipes.ĪSTM A234 specification does not cover cast welding fittings or fittings machined from castings. Pressures Ratings: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2000 LBS, 3000 LBS to 9000 LBS.ĪSTM A234 includes seamless and welded pipe fittingsįor the seamless steel pipe fittings refers to the fittings raw material from the seamless steel pipes and tubes Mechanical properties of ASTM A234 WPB pipe fittings Niobium + Molybdenum shall not exceed 0.32%. Grade WPB fittings made from the steel pipes or plates maximum C is 0.35%.įorging fittings Carbon content 0.35% maximum and Silicon content 0.35% maximum, no minimum.įor each reduce of 0.01 of Carbon content, Manganese maximum content increase 0.06%, up to the maximum 1.35% for Mn.Ĭopper, Nickel, Niobium and Molybdenum sum content shall not exceed 1.00%. ASTM A234 WPB steel pipe fitting chemical and mechanical features Also from steel plate, as ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572 etc. The source raw material of ASTM A234 WPB steel pipe fittings may be from steel pipe, such as ASTM A106 Gr.B and C. W means weldable, P means pressure, B is grade b, refer to the minimum yield strength. In these standard Grade WPB is the most common material used for medium and high temperature pipelines. Grades in ASTM A234ĪSTM A234 specification has many grades, such as WPB, WPC, WP5, WP9 WP11, WP12, WP22, WP91 and so on. In this standard it covers the specification of elbows, tees, reducers, caps and cross, it usually adopt butt welding ends. The fittings material in this standard consist of killed steel, forgings, bars, plates, seamless or fusion-welded tubular products with filler metal added. etc.Īs we know, ASTM A234 steel pipe fittings are used in pressure piping and in pressure vessel fabrication, for services at moderate and elevated temperatures. These fittings material consist of killed steel, forgings, bars, plates, seamless or HFW (fusion welded) pipe products, with filler metal added.ĪSTM A234 includes wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASTM B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and MSS-SP-97. Steel Pipe fittings are applied in pressure pipelines and in pressure vessel fabrications. It covers steel fittings of seamless and welded types.
What is ASTM A234 WPBĪSTM A234 is Standard Specification for steel pipe fittings includes carbon and alloy steel material for moderate and high temperature services. So to complete these activities, steel pipe fittings will be applied. Mostly these fittings includes steel elbow (45 or 90 degree bend), tee, reducer (concentric or eccentric reducer), cross, caps, nipple, flanges, gasket, studs and etc.įor industrial purposes, in pipeline systems usually we need to change the transmission direction Adjust fluids (oil and gas, water, slurry) flow rate Open or close the pipelines, etc. Steel pipe fitting are made of carbon or alloy steel pipe, plates, profiles, to a certain shape that could make a function (Change the fluids direction or rate) in pipeline systems. ASTM A234 standard steel pipe fittings have been widely applied in pipeline systems, it includes carbon and alloy steel material.
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