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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Pipe or fitting fabrications made with filler metal have been radiographed marked with Class symbol WP-W. The sstm materials shall also undergo mechanical tests and shall conform to the required values of tensile strength, yield strength, elongation, and hardness.
Class WP fittings are subdivided into four subclasses: All material is furnished in the heat treated condition and bead rolling is excluded in our process. Historical Version s – view previous versions of standard.
Douglas Barwick – Specifications
With no nondestructive sstm required. When desired, one or more of these may be specified in the order. Active view current version of standard. The fittings shall be formed by a hot or cold process a747 shall be welded by a shielded welding process with or without the addition of filler metal.
As-welded pipe is commonly used when no mechanical testing of the finished product is required. 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 As-Welded fittings are usually used where corrosion resistance is essential.
Tension, Flattening, Flange test, reverse-bend and hardness tests required each lot. Wall thickness may not be more than ASTM A77 This specification covers welded unannealed stainless pipe asstm for low to moderate temperatures and corrosion service where heat treatment is not required for corrosion resistance. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.
Normally furnished in square cut ends, pipe with beveled ends can be provided. Pipe is pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation.
The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Class WP-W fittings contain welds made with or without filler metal. Within the text, the SI units are shown in brackets. A product analysis of both the weld metal and base metal after annealing.
Reducers are supplied as conical. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A fittings is commonly use in the Pulp and Paper mills, food processing plants, and other industries where corrosion resistance is essential. When desired, one or more of these may be specified in the order. Fittings can be supplied in a wstm range of diameters and wall thicknesses.
Base metal analysis are traceable to the original mill certificates. Special fittings can be supplied to customer design and size when required.
ASTM A Fittings This specification covers welded unannealed stainless fittings intended for low to moderate temperatures and corrosion service where heat treatment is not required for corrosion resistance. 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.
A774 to Active This link will always route to the current Active version 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. A is considered to be the most applicable specification for “as welded” fittings. Tension, X774, forward-bend and hardness tests of each lot. Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S.
Combining values from the two systems may result in non-conformance with the standard. Wall thickness may nor be mode than.
ASTM A774 Grade TP316L
Users should note that certain corrosive conditions may restrict the use of one or more grades. Automatic welding process with the addition of filler wire.
Automatic welding process with no addition of filler wire. Although no restrictions are made on sizes commercial practice a74 usually above NPS8. Automatic welding process with or without addition of filler wire. The principal manufacturing procedures specified under A are: Welded elbows can be supplied as smooth flow or mitered construction, tees, lateral and crosses are supplied as nozzle-welded.
Combining values from the two systems may result in nonconformance with the specification. This specification covers two general classes, WP and CR, of wrought austenitic stainless z774 fittings of seamless and welded construction covered by the latest revision of ANSI B 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.