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. Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S.
The fittings shall be made from flat-rolled steel which shall be in the solution annealed condition. A product analysis of both the weld metal and base metal after annealing. Link to Active This link will always route to the current Active version of the standard. Class WP fittings are subdivided into four subclasses: Combining values from the two systems may result in nonconformance with the specification. 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.
A pipe and tubing is commonly used 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: Active view current version of standard. A is considered to be the most applicable specification for “as welded” fittings.
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. Users should note that certain corrosive conditions may restrict the use of one or more grades. When desired, one or more of these may be specified in the order.
Within the text, the SI units are shown in brackets. 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 are normally furnished in MSS SP dimensions, with square cut ends, fittings with beveled ends can be provided. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This abstract is a brief summary of the referenced standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Normally furnished in square cut ends, pipe with beveled ends can be provided.
Although no restrictions are made on sizes commercial practice is usually above NPS8.
Table 1 and Table 2 list the common diameters and nominal q774 of fittings in this specification. This specification covers two general classes, WP and CR, of wrought austenitic stainless steel fittings of seamless and welded construction covered wstm the latest revision of ANSI B The steel materials shall also undergo mechanical tests and shall conform to the required values of tensile strength, yield strength, elongation, and hardness.
This process of welding allows the company to supply a large range of thickness and diameters.
Historical Version s – view previous versions of standard. As-welded pipe is commonly used when no mechanical testing of the finished product is required. Wall thickness may not be more than Special fittings can be supplied to customer design and size when required. Reducers are supplied as conical. These supplementary requirements call for additional tests.
When desired, one or more of these may be specified in the astn. All material is furnished in the heat treated condition and bead rolling is excluded in our process.
ASTM A774 Grade TP316L
Users should note that certain corrosive conditions may restrict the use of one or more grades. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Pipe is pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation. Within the text, the SI units are shown in brackets.
Specially items can be ordered A pipe with immediately deliver available asgm a complete inventory standard sizes up to 24″. a747
As-Welded fittings are usually used where corrosion resistance is essential. 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.
Douglas Barwick – Specifications
Automatic welding process with no addition of filler wire. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units. Automatic welding process with or without addition of filler wire. This specification covers five grades of as-welded, wrought astj stainless steel fittings for low-pressure piping and for low and moderate temperatures and general corrosive service.
Hydrostatic of each tube.
Class WP-W fittings contain welds made with or without filler metal. Normally furnished in square cut ends, fittings with beveled ends can be provided. Wall thickness may nor be mode than. 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 No nondestructive testing is performed and the fittings are unannealed.
Fittings differing from these standard may be furnished in accordance with Supplementary Requirement S9. Base metal analysis are traceable to the original mill certificates.