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Stainless steel butt-weld pipe caps are used to seal the ends of pipelines conveying corrosive, clean, or high-purity media. When joined to the pipe via a full-penetration weld, they form a permanent pressure boundary, thereby reducing potential leak points associated with threaded or flanged connections.
Manufactured with advanced CNC equipment and proven processes, our flanges, pipe bends, and fittings deliver accurate dimensions, stable sealing performance, and dependable installation across demanding industrial applications.
Standards: GB/T 12459-2025, GB/T 13401-2025; ASME B16.9-2024 applies to export projects.
Structure/Dimensions: Stainless steel butt-weld pipe cap; specify nominal size, wall thickness, total depth, and end bevel; ASME B16.9 covers NPS 1/2–48 (DN15–1200), with wall thickness specified according to the connected piping Schedule (Sch) or design thickness.
Connection: Butt-weld; bevel type and root face dimensions are determined based on the welding procedure and project specifications.
Material: Stainless steel such as ASTM A403 WP304/304L, WP316/316L, etc.; material grade, seamless/welded type, heat treatment, and non-destructive testing (NDT) requirements must be clearly specified at the time of inquiry.
Pressure Rating: Butt-weld fittings generally do not have a standalone “Class” rating; pressure-bearing capacity is determined by material, wall thickness, temperature, and applicable piping design codes.
Ordering/Acceptance: Confirm NPS/DN, nominal size, wall thickness/Schedule, structural dimensions, seamless/welded type, material grade, heat treatment, bevel details, and NDT requirements; pressure-bearing capacity is verified based on material, wall thickness, temperature, and piping design codes.
