ASME/ANSI B16.9, ANSI B16.28, MSS-SP-43 End Cap Manufacturers
End pipe caps are used to seal the ends of pipes in a piping system, preventing leaks, protecting against contaminants, and maintaining pressure integrity. They are commonly used during system testing, storage, or transportation to ensure the pipe interior remains clean and undamaged. To install, the cap is either welded onto the pipe end (buttweld caps) or fitted mechanically, depending on the design. This provides a secure and durable closure, making end caps essential in industries like oil and gas, water treatment, and chemical processing.
We are recognized as a trusted exporter and supplier of a wide range of ANSI B16.9 Pipe Caps, available in various materials, including Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, Nickel Alloy 200, Monel, Copper Nickel, Hastelloy, Alloy 20, and more. Our premium-quality End Caps are meticulously designed and manufactured at our advanced infrastructure to meet international quality standards, ensuring exceptional reliability and performance. We produce ASME B16.9 End Caps in both seamless and welded forms, catering to the diverse requirements of industries such as Oil & Gas, Power Generation, Petrochemical, and Industrial Construction, covering Upstream, Midstream, and Downstream sectors with precision and efficiency.
High-Quality ANSI B16.9 Pipe Caps, Pipe End Caps, Stainless Steel End Caps, Carbon Steel End Caps, Welded End Caps, Seamless End Caps, End Caps for Piping Systems, Custom Pipe End Caps, Durable Pipe End Caps
End Pipe Cap Specifications
Size Range
1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Wall Thickness
Sch 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, XS, 100, 120, 140, 160, Sch XXS
Stainless Steel
ASTM A403 WP 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.
Standards / Dimension
ASME B16.9, ASME B16.28, MSS SP-43, MSS SP-75, ASTM A234, ASTM A403, DIN 2605, 2615, 2616, 2617, 10253.
Type / Form
End Pipe Cap.
Alloy Steel
ASTM A234, WP1, WP5, WP9, WP11, WP22, WP91, etc.
Bending Radius
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Carbon Steel
ASTM A234, A420, MSS-SP-75, WPB, WPL3, WPL6, WPHY 42, WPHY 46, WPHY 52, WPHY 56, WPHY 60, WPHY 65, WPHY 70
Duplex & Super Duplex
ASTM A815 / A815M, UNS S31803 / 2205, UNS S32205, UNS S32101 / LDX 2101, UNS S32750 / 2507, UNS S32760, UNS S32550 / Ferralium 255.
End Cap Dimensions
| NPOS | End Cap Y (Outside Diameter) |
End Cap T (Wall Thickness) |
Cap End To End |
Cap Weight |
||
|---|---|---|---|---|---|---|
| Mm | In | Mm | Mm | Schedule | Mm | Kg |
| 15 | 1/2” | 21.3 | 2.78 | STD | ||
| 3.73 | X.S | |||||
| 20 | 3/4” | 26.7 | 2.87 | STD | ||
| 3.91 | X.S | |||||
| 25 | 1” | 33.4 | 3.38 | STD | 38.1 | 0.1 |
| 4.55 | X.S | 38.1 | 0.14 | |||
| 32 | 11/4” | 42.2 | 3.56 | STD | 38.1 | 0.14 |
| 4.85 | X.S | 38.1 | 0.18 | |||
| 40 | 11/2” | 48.3 | 3.68 | STD | 38.1 | 0.18 |
| 5.08 | X.S | 38.1 | 0.23 | |||
| 50 | 2” | 60.3 | 3.91 | STD | 38.1 | 0.27 |
| 5.54 | X.S | 38.1 | 0.32 | |||
| 65 | 21/2” | 73.0 | 5.16 | STD | 38.1 | 0.41 |
| 7.01 | X.S | 38.1 | 0.45 | |||
| 80 | 3” | 88.9 | 5.49 | STD | 50.8 | 0.64 |
| 7.62 | X.S | 50.8 | 0.82 | |||
| 100 | 4” | 114.3 | 6.02 | STD | 63.5 | 1.13 |
| 8.56 | X.S | 63.5 | 1.54 | |||
| 125 | 5” | 141.3 | 6.65 | STD | 76.2 | 1.91 |
| 9.5 | X.S | 76.2 | 2.59 | |||
| 150 | 6” | 168.3 | 7.11 | STD | 88.9 | 2.95 |
| 10.97 | X.S | 88.9 | 4.1 | |||
| 200 | 8” | 219.1 | 8.18 | STD | 101.6 | 5.0 |
| 12.7 | X.S | 101.6 | 7.3 | |||
| 250 | 10” | 273.0 | 9.27 | STD | 127.0 | 9.1 |
| 12.7 | X.S | 127.0 | 12.0 | |||
| 300 | 12” | 323.9 | 9.52 | STD | 152.4 | 13.6 |
| 12.7 | X.S | 152.4 | 17.0 | |||
| 350 | 14” | 355.6 | 9.52 | STD | 165.1 | 15.9 |
| 12.7 | X.S | 165.1 | 21.0 | |||
| 400 | 16” | 406.4 | 9.52 | STD | 178.8 | 20.0 |
| 12.7 | X.S | 178.8 | 26.0 | |||
| 450 | 18” | 457.0 | 9.52 | STD | 203.2 | 26.0 |
| 12.7 | X.S | 203.2 | 34.0 | |||
| 500 | 20” | 508.0 | 9.52 | STD | 228.6 | 33.0 |
| 12.7 | X.S | 228.6 | 43.0 | |||
| 600 | 24” | 610.0 | 9.52 | STD | 266.7 | 46.0 |
| 12.7 | X.S | 266.7 | 61.0 | |||
ASME B16.9 Cap Tolerance
| Dimension | Tolerance |
|---|---|
| Outside Diameter | ± 1/8" or ± 3 mm |
| Wall Thickness | ± 10% of the specified thickness |
| Length | ± 1/16" or ± 1.5 mm |
| Bore Diameter | ± 1/16" or ± 1.5 mm |
| Fillet Radius | ± 1/32" or ± 1 mm |
| Face to End | ± 1/8" or ± 3 mm |
Standard Specifications for Buttweld End Caps
Buttweld end caps are designed to meet various industry standards to ensure reliable and secure sealing of pipe ends. Common specifications include ASME B16.9, which outlines dimensions and tolerances for factory-made buttweld fittings, including end caps.
- ASME Standards:
- ASME B16.9: Factory-Made Wrought Buttwelding Fittings.
- ASME B16.25: Buttwelding Ends (preparation of ends for welding).
- ASME Standards: Wrought Steel Buttwelding Short Radius Elbows and Returns.
- ASTM Standards:
- ASTM A234: Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High-Temperature Service.
- ASTM A403: Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings.
- ASTM A815: Standard Specification for Wrought Ferritic, Ferritic/Austenitic (Duplex), and Martensitic Stainless Steel Piping Fittings.
- ASTM A860: Standard Specification for High-Strength Low-Alloy Welded Fittings (commonly used in pipelines with high strength requirements).
- API Standards:
- API 5L: Specification for Line Pipe (not directly for fittings but related to pipe material in oil and gas industries).
- API 6A: Specification for Wellhead and Christmas Tree Equipment (covers piping components but specific to high-pressure environments in oil fields).
- MSS (Manufacturers Standardization Society) Standards:
- MSS SP-43: Wrought and Fabricated Butt-Welding Fittings for Low-Pressure, Corrosion Resistant Applications (commonly used for stainless steel in low-pressure applications).
- MSS SP-75: Specification for High-Strength Wrought, Butt-Welding Fittings (used in oil and gas for high-strength requirements).
- MSS SP-79: Socket-Welding Reducer Inserts.
- MSS SP-83: Carbon Steel Pipe Unions, Socket Welding, and Threaded.
- DIN (Deutsches Institut für Normung) Standards (European):
- DIN 2605: Steel Elbows for Butt Welding (elbows dimensions and tolerances).
- DIN 2615: Tees for Butt Welding.
- DIN 2616: Reducers for Butt Welding.
- DIN 2617: Caps for Butt Welding.
- EN (European Norms) Standards:
- EN 10253-1: Butt-Welding Pipe Fittings Made of Non-Alloy and Alloy Steels.
- EN 10253-2: Butt-Welding Pipe Fittings with Specified Elevated Temperature Properties.
- EN 10253-3: Butt-Welding Pipe Fittings Made of Austenitic and Austenitic-Ferritic (Duplex) Stainless Steel.
- EN 10253-4: Butt-Welding Pipe Fittings for Low-Pressure Applications.
- JIS (Japanese Industrial Standards):
- JIS B2311: Steel Pipe Fittings for Butt-Welding.
- JIS B2312: Cast Iron Pipe Fittings for Butt-Welding.
- JIS B2313: Malleable Iron Pipe Fittings for Butt-Welding.
- ISO (International Standards Organization) Standards:
- ISO 5251: Specifications for Butt-Welding Ends for Steel Pipe Fittings (compatible with ISO pipes and equipment globally).
- ISO 15590: Petroleum and Natural Gas Industries — Induction Bends, Fittings, and Flanges for Pipeline Transportation Systems.
- BS (British Standards):
- BS 1640: Steel Butt-Welding Pipe Fittings for the Petroleum Industry.
- BS 3799: Forged Fittings, Screwed, and Socket-Welding for the Petroleum Industry
Why Ample Alloys for Pipe Cap!
Competitive Pricing
We offers high-quality pipe caps at competitive rates, delivering excellent value for money without compromising on quality.
Customer-Centric Approach
Our dedicated team is committed to providing exceptional support, from product selection to after-sales service, ensuring your satisfaction every step of the way.
Advanced Production Expertise
Utilizing state-of-the-art technology, we deliver pipe caps that guarantee reliable performance, effectively sealing the ends of pipelines in diverse applications.
Unmatched Quality Standards
Ample Alloys manufactures pipe caps with precision and superior craftsmanship, ensuring high durability, perfect fit, and adherence to international standards.
- Welded End Caps: Permanently welded to the pipe for secure sealing.
- Threaded End Caps: Screwed onto the pipe for a removable, secure closure.
- Socket Weld End Caps: Fitted into a pipe socket and welded into place.
- Welded: By welding the cap directly to the pipe end.
- Screwed or Threaded: By threading the cap onto the pipe for a removable seal.
- Socket Weld: The cap is inserted into the pipe socket and welded in place.
- Oil & Gas
- Power Generation
- Petrochemicals
- Water Treatment
- Construction and Manufacturing
