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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Hydrostatic of each tube.
Douglas Barwick – Specifications
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. Table 1 and Table 2 list the common diameters and nominal thicknesses of fittings in this specification.
A fittings is commonly use in the Pulp and Paper mills, food processing plants, and other industries where corrosion resistance is essential. The principal manufacturing procedures specified under A are: Tension, Flattening, Flange test, reverse-bend and hardness tests required each lot.
Heat analysis and product analysis shall be ast, where in the steel aastm shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, titanium, columbium, tantalum, and nitrogen. Special fittings can be supplied to customer design and size when required. Fittings can be supplied in a wide range of diameters and wall thicknesses. A 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.
Within the text, the SI units are shown in brackets. As-Welded fittings are usually used where corrosion resistance is essential.
ASTM A774/A774M – 14
The A manufacturing process is suited to high-volume production and is generally limited to the diameters and schedule wall thickness shown in ANSI B Wall thickness may nor be mode than. All material is furnished in the heat treated condition and bead rolling is excluded in our process.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A pipe and tubing is commonly used in the Pulp and Paper mills, food processing plants, and other industries where corrosion resistance is essential. Users should note that certain corrosive conditions may restrict the use of one or more grades. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.
The term “fittings” applies to butt and socket welding parts such as 45 and 90 elbows, tees, reducers, wyes, laterals, crosses, and stub ends.
These supplementary requirements call for additional tests. Pipe or fitting fabrications made with filler metal have been radiographed marked with Class symbol WP-W.
ASTM A774 Grade TP316L
Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S.
Pipe is pickled astj passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation.
Welded elbows can be supplied as smooth flow or mitered construction, tees, lateral and crosses are supplied as nozzle-welded. As-welded pipe is commonly used when no mechanical testing of the finished product is required. Wall thickness may not be more than. A is considered to be the most applicable specification for “as welded” fittings.
Normally furnished in square cut ends, fittings with beveled ends can be provided. Reducers are supplied as conical. Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S ; Class WP-W fittings contain welds made with or without filler metal.
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.
When desired, one or more of these may be specified in the order. Link to Active This link will always route to the current Active version of the standard. With no nondestructive testing required.