A butt weld pipe cap (pipe end cap) is a pipe fitting used to seal the end of a pipeline system. It provides a permanent, leak-proof and high-strength closure, widely used in industrial piping systems carrying liquids, gases, and corrosive media.
Senrui is a professional supplier with direct access to source factories, providing a full range of stainless steel pipe caps manufactured according to international standards such as ASME B16.9 and ASTM A403.
With strong manufacturing support and global export experience, we can supply standard products as well as customized solutions for EPC projects, distributors and industrial clients.
A butt weld pipe cap is installed by welding it directly to the end of a pipe. Compared with threaded or socket fittings, it provides:
It is widely used when pipeline termination requires high safety and durability.
| Parameter | Description |
|---|---|
| Product Name | Butt Weld Pipe Cap / Pipe End Cap |
| Standards | ASME B16.9, ASTM A403, ANSI, MSS SP-75, EN10253, JIS, GB |
| Material Grades | SS304, SS304L, SS316, SS316L, Duplex, Alloy Steel |
| Size Range | 1/2” – 48” (DN15 – DN1200) |
| Wall Thickness | SCH10 / SCH20 / SCH40 / SCH80 / SCH160 / XXS |
| Type | Seamless / Welded / Forged |
| Connection | Butt Weld (BW) |
| Surface Finish | Pickled / Sand Blasted / Polished |
| Material | Features | Application |
|---|---|---|
| SS304 / 304L | Good corrosion resistance | General industrial piping |
| SS316 / 316L | Excellent chemical resistance | Marine & chemical industry |
| Duplex Steel | High strength + corrosion resistance | Offshore & oil & gas |
| Alloy Steel | High temperature resistance | Special industrial systems |
We support a wide range of material grades and can also provide customized material solutions according to project requirements.
✔ High strength welded structure with leak-proof performance
✔ Excellent corrosion resistance for harsh environments
✔ Wide range of sizes and thickness schedules
✔ Manufactured in accordance with international standards
✔ Suitable for high-pressure and high-temperature applications
✔ Custom production available based on drawings
✔ Stable supply supported by source factories
| Industry | Usage |
|---|---|
| Oil & Gas | Pipeline sealing and termination |
| Petrochemical | High-pressure piping systems |
| Power Plants | Steam and fluid systems |
| Water Treatment | Clean water and sewage pipelines |
| Shipbuilding | Marine piping systems |
| Chemical Industry | Corrosive media transport |
| Food & Beverage | Hygienic pipeline systems |
| Standard | Grade | UNS | Equivalent |
|---|---|---|---|
| ASTM A403 | WP304 | S30400 | A312 TP304 |
| ASTM A403 | WP304L | S30403 | A312 TP304L |
| ASTM A403 | WP316 | S31600 | A312 TP316 |
| ASTM A403 | WP316L | S31603 | A312 TP316L |
| ASTM A403 | WP321 | S32100 | A312 TP321 |
| ASTM A403 | WP347 | S34700 | A312 TP347 |
All pipe caps are strictly tested before delivery:
We also supply a complete range of pipe fittings:
What is a butt weld pipe cap?
A pipe fitting used to seal the end of a pipe by welding.
What standards do you support?
ASME B16.9, ASTM A403, ANSI, MSS, EN and other international standards.
What materials are available?
304, 304L, 316, 316L, duplex and alloy steel.
Can you provide custom pipe caps?
Yes, we support customization based on drawings and project requirements.
Do you provide inspection certificates?
Yes, MTC and third-party inspection are available.
Looking for a reliable stainless steel pipe cap manufacturer?
Send us your requirements including:
👉 Our team will respond within 24 hours with a competitive quotation.
