ASTM A774 PDF

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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Historical Version s – view previous versions of standard. Class WP fittings are subdivided into four subclasses: Base metal analysis are traceable to the original mill certificates. Pipe is pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation.

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. Fittings differing from these standard may be furnished in accordance with Supplementary Requirement S9.

Combining values from the two systems may result in non-conformance with the standard. Table 1 and Table 2 list the common diameters and nominal thicknesses of fittings in this specification. A is considered to be the most applicable specification for “as welded” fittings. Reducers are supplied as conical. With no nondestructive testing required.

This specification covers five grades of as-welded, wrought austenitic stainless steel fittings for low-pressure piping and for low and moderate temperatures and general corrosive service. Normally furnished in square cut ends, fittings with beveled ends can be provided. 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. Tension, Flattening, Flange test, reverse-bend and hardness tests required each lot.

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Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture marked with class symbol WP-S. The term “fittings” applies to butt and socket welding parts such as 45 and 90 elbows, tees, reducers, wyes, laterals, crosses, and stub ends.

Combining values from the two systems may result in nonconformance with the specification. Pipe or fitting fabrications made with filler metal have been radiographed marked with Class symbol WP-W.

Fittings are pickled and passivated as per ASTM A to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation. 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. Automatic welding process with no addition of filler wire.

ASTM A774/A774M – 14

Heat analysis and product analysis shall be performed where in the steel fittings shall conform to the required chemical compositions of asgm, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, titanium, columbium, tantalum, and nitrogen. These supplementary requirements call for additional tests.

Class WP-W fittings contain welds made with or without filler metal. Asrm should note that certain corrosive conditions may restrict the use of one or more grades. ASTM A Fittings This specification covers welded unannealed stainless fittings intended for low to moderate temperatures and corrosion x774 where heat treatment is not required for corrosion resistance.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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The steel materials shall also undergo mechanical tests and shall conform to the required values of tensile strength, yield strength, elongation, and hardness. Active view current version of 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.

Wall thickness may nor be mode than. This process of welding allows the company to supply a large range of thickness and diameters.

Douglas Barwick – Specifications

All material is furnished in the heat treated condition and bead rolling is excluded in our process. The principal manufacturing procedures specified under A are: How to Find Us. The fittings shall be made from flat-rolled steel which shall be in the solution annealed condition. Within the text, the SI units are shown in aztm. Normally furnished in square cut ends, pipe with beveled ends can be provided.

ASTM A774 Grade TP316L

Specially items can be ordered A pipe with immediately deliver available from a complete inventory standard sizes up to 24″. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.

The fittings shall be formed by a hot or cold process and shall be welded by a shielded welding process aa774 or without the addition of filler metal. Automatic welding process with the addition of filler wire.