ASTM A403 Wp304 Stainless Steel Pipe Fitting Concentric Reducer

ASTM A403 / A403M - 20 Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

This specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. All fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension test shall be done on the fitting material to determine the tensile properties such as yield strength and tensile strength. Fittings supplied under this specification shall be examined visually for surface discontinuities, surface checks, and mechanical marks.

Steel grades,
ASTM A403 WP304, A403 WP304L, A403 WP316, A403 WP316L, A403 WP321
ASTM A182 F 304, 304L, 316, 316L, 321, 904L

Available dimensions
DN15-600