Key Features of Welding Neck Flanges
Dimensional Data – ASME B16.5 Class 150
| Size (NPS) | O.D. (in) | Thickness | Bolt Circle | Hub Length |
|---|---|---|---|---|
| 2" | 6.00 | 0.75 | 4.75 | 2.50 |
| 3" | 7.50 | 0.94 | 6.00 | 2.75 |
| 4" | 9.00 | 0.94 | 7.50 | 3.00 |
| 6" | 11.00 | 1.00 | 9.50 | 3.50 |
| 8" | 13.50 | 1.12 | 11.75 | 4.00 |
Global Manufacturing Standards
All flanges manufactured to ASTM, EN, API, JIS, ISS, BSS, and DIN standards. Custom sizes and specifications available on request.
What Is a Welding Neck Flange?
A welding neck flange is more than just a component; it is a critical part of industrial piping systems designed to ensure safety, efficiency, and durability. Weld Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures.
Widely used in high-pressure environments, it plays a vital role in oil & gas, chemical, power, and water treatment industries for isolation, inspection, and pressure testing purposes.
Pro Tip: Welding Neck Flanges are often designed to work seamlessly with Blind Flanges in critical piping applications to ensure maximum system integrity.
Industries Served
As a trusted welding neck flange supplier in India and a leading welding neck flange exporter worldwide, we cater to critical sectors including:
- Oil & Gas pipelines
- Petrochemical plants
- Power generation units
- Water treatment facilities
- Offshore & onshore piping systems
- Chemical processing units
Rigorous Quality Assurance
At Teshi Group, quality is non-negotiable. Our Welding Neck Flanges undergo stringent testing to ensure they withstand the harshest industrial conditions. We provide valid test certificates with every supply.
Testing Capabilities
- • Hydrostatic Testing
- • Ultrasonic Testing (UT)
- • Positive Material Identification (PMI)
- • Radiography Testing (RT)
Certifications
- • ISO 9001:2015 Certified
- • PED 2014/68/EU Compliant
- • EN 10204 3.1 / 3.2 Certification
Global Reach
We are a trusted exporter of industrial flanges, serving clients in over 25+ countries including the UAE, Saudi Arabia, USA, Germany, and beyond. Our logistics team ensures timely and secure delivery anywhere in the world.
Why Choose Teshi Group for Welding Neck Flanges?
At Teshi Group, we prioritize quality and precision. As a leading manufacturer in India, we ensure every flange meets global standards like ASME B16.5, providing you with reliable, long-lasting components for your critical infrastructure.
- ✓High-quality materials (Carbon, Stainless, Alloy Steel)
- ✓Strict adherence to international standards (ASME, DIN, API)
- ✓Custom sizes and pressure ratings available
Welding Neck Flange Specifications
Let's Start Work Together
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