ASTM Pipe Fittings Stainless Carbon Steel Forged Socket Welding Flat End Cap

Our industrial-grade stainless steel pipe cap is designed to close the end of a pipeline securely, preventing flow and protecting pipe integrity during maintenance, testing, or long-term shutdown. Made from premium 304 or 316L stainless steel, this cap offers excellent corrosion resistance, high pressure tolerance, and long service life in demanding industrial environments.

Product Types:

We offer a variety of pipe caps to meet different piping requirements:
 • Convex Cap: Includes elliptical, dished, and hemispherical shapes; ideal for pressure systems.
 • Flat End Cap: Cost-effective solution for low-pressure or non-pressurized systems.
 • Conical Cap: Used in special-purpose equipment or directional closures.
 • Sanitary Clamp Cap: Designed for quick installation/removal in food and pharmaceutical pipelines.

Connection Types:

 • Butt Weld Cap (standard for pressure pipelines)
 • Socket Weld Cap (for small bore and high-pressure systems)
 • Threaded Cap (easy to install and remove for maintenance)
 • Clamp-on Cap (used in sanitary applications with tri-clamp connections)

Specifications:

 • Size Range: DN15 – DN600 (1/2” – 24”)
 • Wall Thickness: Sch10S – Sch160, XS, XXS
 • Standards: ASME B16.9, ASTM A403, DIN 2617, GB/T 12459
 • Material Grades: 304, 304L, 316, 316L

Surface Finishes Available:

 • Pickled and Passivated – to enhance chemical resistance
 • Sandblasted – for uniform matte texture and improved surface hardness
 • Tumbled (Vibratory Polished) – smooth edges and burr-free surface
 • Mirror Polished – for sanitary and food-grade applications

Applications:

Ideal for use in chemical plants, petrochemical pipelines, water treatment systems, pharmaceutical clean rooms, and food & beverage processing lines. Suitable for permanent closures, temporary sealing, or pipe testing.