Purchase your copy of ASTM A/AM – 14 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. ASTM A – This specification covers “as-welded” stainless steel pipe fittings for low pressure piping intended for low to moderate temperatures and general. ASTM A/AM: STANDARD SPECIFICATION FOR AS-WELDED WROUGHT AUSTENITIC STAINLESS STEEL FITTINGS FOR GENERAL CORROSIVE.
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The fittings shall be formed by a hot or cold process and shall be welded by a shielded welding process with or without the addition of filler metal. Although no restrictions are made on sizes commercial practice is usually above NPS8.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Automatic welding process with the addition of filler wire.
Specially items can be ordered A pipe with immediately deliver available from a complete inventory standard sizes up to 24″. Class WP-W fittings contain welds made with or without filler metal.
Wall thickness may not be more than Wall thickness may nor be mode than. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. No nondestructive testing is performed and the fittings are unannealed.
ASTM A Fittings This specification covers welded unannealed ast fittings intended for low to moderate temperatures and axtm service where heat treatment is not required for corrosion resistance.
Fittings are normally furnished in MSS SP dimensions, with square cut ends, fittings with beveled ends can be provided. 7a74 material is furnished in the heat treated condition and bead rolling is excluded in our process. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Fittings differing from these standard may be furnished in accordance with Supplementary Requirement S9.
Ast is considered to be the most applicable specification for “as welded” pipe and differs from it only that a transverse guided bend test and a transverse tension test are required per lot. A product analysis of both the weld metal and base metal after annealing.
ASTM A774 Grade TP316L
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the asym. The term “fittings” applies to butt and socket welding parts such as 45 and 90 elbows, tees, reducers, wyes, laterals, crosses, and stub ends. Wall thickness may not be more than. The fittings shall be made from flat-rolled steel which shall be in the solution annealed condition. This process of welding allows the company to supply a large range of thickness and diameters.
Hydrostatic or non-destructive electric test of each tube. Normally furnished in square cut ends, pipe with beveled ends can be provided.
Table 1 and Table 2 list the common diameters and nominal thicknesses of fittings in this specification. A pipe and tubing is commonly used in the Pulp and Paper mills, food processing plants, and other x774 where corrosion resistance is essential.
The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. The steel materials sstm also undergo mechanical tests and shall conform to the required values of tensile strength, yield strength, elongation, and hardness. Combining values from the two systems may result in nonconformance with the specification. Automatic welding process with no addition of filler wire.
Fittings can be supplied in a wide range of diameters and wall thicknesses. Fittings are pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation.
Link to Active This link will always route to the current Active version of the standard. As-welded pipe is commonly used when no mechanical testing of the finished product is required. Welded elbows can be supplied as smooth flow or mitered construction, tees, lateral and crosses are supplied as nozzle-welded. Pipe or fitting fabrications made with filler metal have been radiographed marked with Class symbol WP-W.
Link to Active This link will always route to the current Active version of the standard. These supplementary requirements call for additional tests. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. This abstract is a brief summary of the referenced standard.
Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S. A fittings is commonly use in the Pulp and Paper mills, food processing plants, and other industries where corrosion resistance is essential. Heat analysis and product analysis shall be performed where in the steel fittings shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, titanium, columbium, tantalum, and nitrogen.
When desired, one or more of these may be specified in the order. Base metal analysis are traceable to the original mill certificates.
Douglas Barwick – Specifications
Tension, Reverse, forward-bend and hardness tests of each lot. Hydrostatic of each tube. Pipe is pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation.
The principal manufacturing procedures specified under A are: Users should note that certain corrosive conditions may restrict the use of one or more grades. ASTM A This specification covers seamless and welded austenitic stainless steel tubing intended for the low or high temperature and general corrosion service. Active view current version of standard. Normally furnished in square cut ends, fittings with beveled ends can be provided.
Carbide solution heat treatment is required which include rapid cooling to prevent re-precipitation of carbides. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.