LONG STUB-END DEMENSIONS MSS SP 43 & ASME B16.9
Long Stub End Dimensions MSS SP 43 & ASME B16.9 – Manufacturer & Supplier in India | SUN STEEL & PIPE FITTINGS CO
In the world of industrial piping, flexibility, durability, and ease of maintenance are crucial. One such fitting that plays a key role in simplifying piping systems—especially when combined with lap joint flanges—is the Long Stub End. Whether it’s for corrosive media, high-pressure lines, or hygienic processing systems, Long Stub Ends manufactured to MSS SP-43 and ASME B16.9 standards ensure excellent performance and structural integrity.
SUN STEEL & PIPE FITTINGS CO is a reputed manufacturer and supplier of Long Stub Ends in India, offering a wide range of dimensions and materials to meet your project’s exact requirements.
What is a Long Stub End?
A Long Stub End is a pipe fitting used in conjunction with lap joint flanges. Unlike a welded neck flange, a stub end does not require a weld neck, allowing for more economical and flexible piping systems. The “long” version refers to the length of the hub, which is longer than its short counterpart and typically used in high-pressure or high-corrosion environments.
Key Benefits of Long Stub Ends:
- Cost-effective alternative to full flanges
- Reduces material wastage in high-grade alloy piping
- Ideal for corrosive and hygienic environments
Easy disassembly for maintenance or inspection
MSS SP-43 & ASME B16.9 – Understanding the Standards
🔹 ASME B16.9
This standard covers factory-made wrought buttwelding fittings, including stub ends. It defines dimensional tolerances, thicknesses, and manufacturing criteria for fittings used in pressure piping and pipeline applications.
🔹 MSS SP-43
This standard specifically applies to buttweld fittings in corrosion-resistant applications and includes stub ends for use in low-pressure or non-severe services, typically in Schedule 5S and 10S wall thicknesses. MSS SP-43 fittings are widely used in stainless steel and non-ferrous piping systems.
At SUN STEEL, we manufacture Long Stub Ends compliant with both standards to suit various industrial applications, ensuring compatibility with lap joint flanges and pipeline assemblies.
Standard Long Stub End Dimensions
We supply Long Stub Ends in:
- Sizes: ½” NB to 24” NB
- Schedules: SCH 5S, SCH 10S, SCH 40, SCH 80, and custom
- Length Types: Type A and Type B (as per standard specifications)
- Ends: Beveled for butt-welding (as per ASME B16.25)
Whether you require stub ends for high-pressure pipelines or corrosion-resistant systems, we can deliver the precise dimension and material suited for your project.
Material Options Available
We manufacture Long Stub Ends in:
- Stainless Steel – ASTM A403 WP304, WP304L, WP316, WP316L
- Carbon Steel – ASTM A234 WPB
- Alloy Steel – ASTM A234 WP11, WP22
- Duplex / Super Duplex Steel – UNS S31803, S32750
- Nickel Alloys – Inconel, Hastelloy, Monel (on request)
We also provide stub ends with electropolished surfaces for cleanroom and food-grade applications.
Why Choose SUN STEEL & PIPE FITTINGS CO?
✅ In-House Manufacturing
Equipped with modern CNC machines and welding stations, we ensure precise tolerances and high repeatability for large production runs.
✅ Certified Quality
Every Long Stub End undergoes rigorous testing—dimensional checks, hydro testing, PMI, and surface finish inspection—with complete documentation such as MTCs and third-party inspection certificates.
✅ Customization & Quick Delivery
Need a non-standard size or special grade? We offer quick turnaround and nationwide delivery with a robust stock of ready-to-ship items.
✅ Trusted Across Industries
Our stub ends are used in pharmaceuticals, food processing, chemical plants, water treatment systems, oil & gas, and power generation projects across India and globally
Conclusion:
The Long Stub End Dimensions MSS SP-43 ASME B16.9 fittings are ideal for applications requiring easy disassembly and corrosion resistance. At Sun Steel & Pipe Fittings Co., we offer precision-engineered long stub ends manufactured to international dimensional standards. Whether for chemical processing, oil & gas, or water treatment, our products ensure durability and performance. Trust Sun Steel as your reliable supplier for long stub ends in India. Contact us today for technical support and competitive pricing!
