ASME B16.9 Pipe End Caps – Stainless Steel, Carbon Steel, Alloy & High Nickel Grades
Prime Steel Corporation is a trusted manufacturer and exporter of Buttweld End Caps, supplying top-quality fittings to clients in Colombo, with extended supply networks in Gampaha, Katunayake, Kandy, Trincomalee, Hambantota, and Jaffna. A Buttweld End Cap is a crucial fitting used to close the ends of piping systems securely, providing protection from external contamination, pressure build-up, or simply to seal off unused pipe branches. Designed for permanent closure, these end caps are buttwelded onto pipes to form a leak-proof, flush connection. They are widely used in power plants, petrochemical refineries, marine systems, food and beverage processing, pharmaceuticals, and desalination plants, where cleanliness, corrosion resistance, and strength are essential. Our Pipe Caps are manufactured in accordance with ASME B16.9, ensuring precise fitment and long-term performance under demanding industrial environments.
Key Functions of Pipe End Caps:
- Provide permanent closure to piping ends
- Protect pipelines during pressure testing or isolation
- Prevent ingress of dirt, moisture, or debris
- Used to seal off future expansion points in process systems
Dimensional Standards – ASME B16.9 Pipe Cap:
- Size Range: ½” NB to 48” NB
- Wall Thickness: SCH 10 to SCH XXS
- Ends: Beveled as per ASME B16.25 for full penetration weld
- Design: Dome-shaped end with smooth internal and external surface
- Form: Seamless or welded depending on size and requirement
Applicable Standards:
- ASME B16.9 – Factory-made wrought steel buttwelding fittings
- MSS SP-43 – For light-weight, corrosion-resistant applications
- DIN 2617 / EN 10253 – For European project requirements
Material Grades Offered:
- Stainless Steel: A403 WP304 / WP316 / WP316L / WP321 / WP347
- Carbon Steel: A234 WPB, WPC
- Alloy Steel: A234 WP11 / WP22 / WP5 / WP9
- Nickel Alloys: Inconel 600 / 625, Monel 400, Hastelloy C22 / C276, Alloy 20
- Duplex & Super Duplex: S31803, S32750, S32760
All caps undergo 100% dimensional checks, hydrotesting, and are supplied with EN 10204 3.1 / 3.2 certification on request.
Applications of Pipe End Caps in Sri Lankan Industries:
- Chemical Plants – Prevent chemical exposure or leaks at system terminals
- Oil & Gas Pipelines – Seal off unused pipe ends during operations
- Water Treatment Facilities – Hygienic closure for unused flow channels
- Marine & Offshore Engineering – End protection for corrosion-prone piping
- Construction & Infrastructure – Pressure testing and system capping
Also check: Elbow Supplier in Colombo – Buttweld Elbow Supplier Sri Lanka
Frequently Asked Questions
What is a Buttweld Pipe End Cap used for?
A Buttweld Pipe End Cap is used to securely close the end of a piping system. It prevents leakage, contamination, and pressure build-up, and is often used to seal off unused pipe branches in industrial setups.
Which industries use ASME B16.9 Pipe End Caps?
ASME B16.9 Pipe End Caps are widely used in power plants, petrochemical refineries, marine systems, food and beverage processing, pharmaceuticals, and desalination plants where cleanliness, corrosion resistance, and strength are critical.
Where can I buy Buttweld Pipe Caps in Colombo, Sri Lanka?
You can buy high-quality Buttweld Pipe Caps from Prime Steel Corporation in Colombo. We also supply to Gampaha, Katunayake, Kandy, Trincomalee, Hambantota, and Jaffna.
What materials are available for Pipe End Caps at Prime Steel Corporation?
Prime Steel Corporation offers Pipe End Caps in stainless steel, carbon steel, alloy steel, and high nickel alloys, manufactured according to ASME B16.9 standards for a precise, long-lasting fit.
Need Buttweld Pipe End Caps in custom sizes or exotic alloys? Contact us at:
sales@primesteelcorp.com
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