4 Inch 904L Stainless Steel Stub End Pipe Flange, ASTM A403, 10S Schedule, BW Beveled, MSS-A Short Length

Product Overview

This 4-inch 904L super austenitic stainless steel stub end pipe flange is manufactured in compliance with ASTM A403 standards, featuring 10S schedule wall thickness, butt weld (BW) beveled end (BE), and MSS-A short pattern length. It is designed for high-corrosion industrial piping systems, providing reliable leak-tight connections when paired with matching lap joint flanges.

Key Features

• Fabricated from 904L (UNS N08904) super austenitic stainless steel for excellent resistance to chloride-induced pitting, crevice corrosion and acid attack
• Compliant with ASTM A403 specification for wrought austenitic stainless steel pipe fittings
• 10S schedule thin-wall design suitable for low to medium pressure corrosive fluid applications
• Beveled butt weld end ensures full penetration welding and structural integrity
• MSS-A short pattern length optimizes piping layout space and reduces material cost
• Precision machined flange face guarantees uniform sealing performance

Specifications

Applications

This 904L stainless steel stub end is widely used in severe corrosive piping systems across chemical processing, petrochemical, seawater desalination, pulp & paper, pharmaceutical, and food & beverage industries. It is ideal for applications involving sulfuric acid, phosphoric acid, chloride-containing media, and other aggressive fluids where standard 304/316 stainless steel fittings cannot provide sufficient corrosion resistance.

Package Contents

• 1 x 4" 904L Stainless Steel Stub End (MSS-A Short Pattern, 10S Schedule, BW Beveled End)
• Material Test Report (MTR) available upon request