Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Combining values from the two systems may result in nonconformance with the specification.Where the wall thickness lies between two values above, the min elongation value is determined by the following equations:Steel elbow is used to be installed between two lengths of pipe or tube allowing a change of direction,usually these carbon steel elbows distinguished by connection ends, The ends may be machined for butt welding , threaded , or socketed , so the carbon steel elbows are consist of butt weld,thread elbow socket elbow and other series.the material is selected according to the application use such as high temperature use,sanitary fitting,regular industrial use etc.What is the manufacturing process of ASTM A234 WPB pipe fittings?In very large sizes, the fittings may be manufactured in pieces and welded together as is the case for many large fittings.The term used for the manufacturing is called “wrought” which means it is worked as opposed to being cast or forged.As to the W standing for weldable, I’m not sure that is correct since that are many, many pipe fittings that are weldable but carry designations other than a W. Note the reference below.This standard covers wrought carbon steel fittings of seamless and welded construction which are manufactured to the dimensional specifications of ASME B16.9 and B16.28. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Killed steel, with forgings, bars, plates, sheet, and seamless or fusion-welded tubular products with filler metal added. Cast steel welding fittings are governed by Specifications A 216/A 216M and A 217/A 217M.1.4 This specification is expressed in both inch-pound units and in SI units. A234 WPB is the most common carbon steel pipe fittings material . astm a234/a234m-07 Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service This standard covers wrought carbon steel fittings of seamless and welded construction which are manufactured to the dimensional specifications of ASME B16.9 and B16.28. endobj
The source raw material of ASTM A234 WPB steel pipe fittings may be from steel pipe, such as ASTM A106 Gr.B and C. Also from steel plate, as ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572 etc. Forging or shaping operations performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Figure below represent complete collection of butt welded pipe fitting
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A234 WPB material is the most commonly used carbon steel pipe fittings material used in medium and high temperature in the world. ASTM A234 is Standard Specification for steel pipe fittings includes carbon and alloy steel material for moderate and high temperature services. endobj
W means weldable, P means pressure, B … ASTM A234 specification has many grades, such as WPB, WPC, WP11, WP12, WP22, WP91 and so on. ��d�`�X��6�:X�mȕ��Lc�*"U��� Seis�(��vDo|
���o0w�_�!�ߛ���%�qԯ~ After forming at an elevated temperature, fittings are cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air.
Heat treatment temperatures specified are metal (part) temperatures. W means weldable, P means pressure, B is grade b, refer to the minimum yield strength.The source raw material of ASTM A234 WPB steel pipe fittings may be from steel pipe, such as ASTM A106 Gr.B and C. Also from steel plate, as ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572 etc.
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The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. 2 0 obj
Its source can be steel pipe, such as ASTM, A106, Gr.C, or steel plate, such as ASTM, A285, GR.C <>