Buttweld Stub End Suppliers in Colombo, Sri Lanka – Short & Long Stub Ends – Stainless Steel, Carbon Steel, Alloy Steel, Nickel Alloys – ASME B16.9
Buttweld Stub End Suppliers in Colombo, Sri Lanka Prime Steel Corporation is a leading manufacturer and exporter of Buttweld Stub Ends, supplying premium-grade Short Stub End and Long Stub End fittings to industries in Colombo, as well as Gampaha, Katunayake, Kandy, Trincomalee, Hambantota, and Jaffna. Stub Ends are primarily used in conjunction with Lap Joint Flanges to form a flanged connection that can be easily dismantled for inspection or maintenance, making them especially useful in systems where frequent disassembly is required. Available in both Type A and Type B designs, Stub Ends help reduce flange costs in high-grade material piping systems. These fittings are widely used in chemical processing, food and beverage, marine, oil & gas, desalination, and pharmaceutical industries, where hygiene, corrosion resistance, and reusability are critical. Our Stub Ends comply with ASME B16.9 and MSS SP-43 standards and are manufactured using the finest quality Stainless Steel, Carbon Steel, Low Alloy, and High Nickel Alloys, offering superior weldability, strength, and durability.
Types of Stub Ends We Manufacture:
- Short Stub End (Type B) – Also known as MSS Stub End, it has a shorter hub and is used with Lap Joint Flanges for cost-effective flanged joints.
- Long Stub End (Type A) – Longer hub for improved reinforcement; suitable for high-pressure applications and systems requiring frequent dismantling.
Dimensional Specifications – ASME B16.9 / MSS SP-43 Stub Ends:
- Size Range: ½” NB to 24” NB
- Wall Thickness: SCH 10 to SCH XXS
- Ends: Beveled for welding (ASME B16.25)
- Type A: Used with standard Lap Joint Flanges
- Type B: Short pattern for economical installations
- Face Type: Raised Face (RF) / Flat Face (FF) as per project requirement
Standards Followed for Stub End Manufacturing:
- ASME B16.9 – Factory-wrought steel buttwelding fittings
- MSS SP-43 – Light-weight corrosion-resistant stub ends
- DIN & EN Standards – Upon request for international projects
Material Grades We Offer:
- Stainless Steel: ASTM A403 WP304, 304L, 316, 316L, 321, 347, 904L
- Carbon Steel: ASTM A234 WPB, WPC
- Alloy Steel: ASTM A234 WP11, WP22, WP5, WP9
- High Nickel Alloys: Inconel 625, Hastelloy C276, Monel 400, Alloy 20
- Duplex & Super Duplex: UNS S31803, S32750, S32760
All Stub Ends are 100% PMI-tested, hydro tested, and certified with EN 10204 3.1 / 3.2 as per customer requirement.
Stub End Usage in Key Sri Lankan Industries:
- Oil & Gas Refineries – For high-pressure flanged pipelines
- Chemical and Petrochemical Plants – Corrosion-resistant stub ends in aggressive media
- Food & Beverage Sector – Hygienic and easily cleanable piping systems
- Marine and Offshore Platforms – Durable and saltwater-resistant fittings
- Power Plants & Desalination Projects – Easy maintenance systems with flanged assemblies
Frequently Asked Questions
What are Short and Long Stub Ends used for?
Short and Long Stub Ends are used with Lap Joint Flanges to create a detachable flanged connection, ideal for systems requiring frequent inspection, cleaning, or maintenance. They help reduce the cost of using high-grade materials in full flanges.
What is the difference between Type A and Type B Stub Ends?
Type A Stub Ends are designed to be used with standard Lap Joint Flanges, providing full contact. Type B Stub Ends have a shorter hub and are commonly used with Slip-On Flanges, offering a cost-effective and space-saving solution.
Which materials are available for Stub Ends at Prime Steel Corporation?
We manufacture Stub Ends using high-quality Stainless Steel, Carbon Steel, Low Alloy Steel, and High Nickel Alloys such as Inconel, Hastelloy, and Monel, ensuring excellent corrosion resistance and weldability.
Do you supply Stub Ends in Sri Lanka?
Yes, Prime Steel Corporation supplies both Short and Long Stub Ends across Sri Lanka, including Colombo, Gampaha, Katunayake, Kandy, Trincomalee, Hambantota, and Jaffna, catering to multiple industrial sectors.
Also check: Buttweld Reducing Cross Supplier in Colombo, Sri Lanka
For quotations, MTCs, or export documentation, connect with us today at:
sales@primesteelcorp.com
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