Stainless steel tube fittings8/18/2023 ASTM A960/A960M: Specifications for Common Requirements of Wrought Steel Pipe Fittings.ASTM A751: Test methods, Practices, and Terminology for Chemical Analysis of Steel Products.ASTM A744/A744M: For Server Service other than A743M (for the same material).ASTM A743/A743M: Specifications of Casting, Inron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant for General Application.ASTM A351/A351M: Casting, Austenitic, for Pressure-Containing Parts Specifications.If mixed, it will lead to inconsistency with this standard. Since the values in the two unit systems are unlikely to be exactly equal, it is necessary to independently adopt two unit systems. In the text, SI units are shown in brackets. Values expressed in either inches-pounds or SI units should be considered standard values. However, unless the "M" standard number (SI unit) is specified in the order, the material is supplied in inch-pound units. This standard and applicable material standards are described in both inch-pound units and SI units. Class designations are also used to indicate non-destructive testing methods and the extent of non-destructive testing (NDE). Material under this standard named as WP Grade, and for each WP grade stainless steel, several categories of pipe fittings are included, to indicate that a seamless or welded structure is used. (Austenitic stainless steel castings are included in these standard, A351/A351M, A743/A743M and A744/A744M.) WP Grade Stainless Steel Pipe Fittings The standard includes several grades of austenitic stainless steel alloys, and uses the WP or CR prefix to mark the grade of steel, depending on the applicable ASTM or MSS size and rated pressure standards.ĪSTM A403 is designed for forged steel pipe fittings, Cast pipe fittings are not suitable.
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