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Long Weld neck flanges
Steelvron is a trusted Reducing Flanges supplier, manufacturer, and exporter, providing high-quality flanges designed to connect pipes of different diameters in a secure and leak-proof manner. Reducing Flanges are essential components in piping systems where a change in pipe size is required, ensuring smooth flow and structural integrity. They are widely used in applications that demand reliable performance while transitioning between different pipe sizes.
Overview
Steelvron is a trusted Reducing Flanges supplier, manufacturer, and exporter, providing high-quality flanges designed to connect pipes of different diameters in a secure and leak-proof manner. Reducing Flanges are essential components in piping systems where a change in pipe size is required, ensuring smooth flow and structural integrity. They are widely used in applications that demand reliable performance while transitioning between different pipe sizes.
As a global Reducing Flanges supplier, Steelvron offers flanges in materials including Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex, Nickel Alloys, Copper-Nickel, Inconel, Hastelloy, Monel, and Titanium. Manufactured in compliance with ASME, ASTM, DIN, EN, and JIS standards, these flanges are available in sizes ranging from ½” to 48” with pressure ratings up to Class 2500. Their robust design ensures ease of installation, high corrosion resistance, and compatibility with a wide range of piping systems.
Industries such as oil & gas, chemical processing, water treatment, food & beverage, and marine engineering rely on Steelvron Reducing Flanges for superior durability, reliability, and operational efficiency. They are ideal for pipelines with varying diameters and systems requiring seamless flow transitions without leakage or pressure loss.
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Technical Specifications
| Material | Grades Available | Standards | Size Range | Pressure Class | Types | Face Finish |
|---|---|---|---|---|---|---|
| Carbon Steel Long Weld Neck Flanges | ASTM A105, A350 LF2 | ASME B16.5, B16.47, ASTM | ½” – 60” | Class 150 – Class 2500 | LWN Flange, Heavy Duty Weld Neck | RF, RTJ, FF |
| Stainless Steel Long Weld Neck Flanges | SS 304/304L, 316/316L, 321, 347, 904L | ASTM A182, ASME B16.5 | ½” – 60” | Class 150 – Class 2500 | Long Neck Flange, Extended Neck Flange | Raised Face, Polished Finish |
| Alloy Steel Long Weld Neck Flanges | ASTM A182 F5, F9, F11, F22, F91 | ASTM A182, ANSI B16.5 | ½” – 48” | Class 150 – Class 2500 | High Pressure LWN Flanges | RF, RTJ Face |
| Duplex / Super Duplex Long Weld Neck Flanges | UNS S31803, S32205, S32750, S32760 | ASTM A182 | ½” – 48” | Class 150 – Class 2500 | Extended Weld Neck Flanges | Pickled & Passivated |
| Inconel Long Weld Neck Flanges | Inconel 600, 601, 625, 718 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | LWN Industrial Flanges | Polished, Machined Finish |
| Hastelloy Long Weld Neck Flanges | Hastelloy C22, C276 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | Long Neck Flanges | Polished Finish |
| Monel Long Weld Neck Flanges | Monel 400, K500 | ASTM B564 | ½” – 24” | Class 150 – Class 1500 | Extended Neck Flanges | Machined Finish |
| Titanium Long Weld Neck Flanges | Titanium Gr.1, Gr.2, Gr.5 | ASTM B381 | ½” – 24” | Class 150 – Class 1500 | Long Weld Neck Flanges | Pickled, Polished |
Features & Advantages of Long Weld neck flanges
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Applications Across Industries
Oil & Gas
Used in upstream, midstream and downstream pipeline systems.
Petrochemical
Used in upstream, midstream and downstream pipeline systems.
Power Generation
Used in upstream, midstream and downstream pipeline systems.
Chemical Processing
Used in upstream, midstream and downstream pipeline systems.
Marine & Offshore
Used in upstream, midstream and downstream pipeline systems.
Water Treatment
Used in upstream, midstream and downstream pipeline systems.
Frequently Asked Questions
Technical questions on our Long Weld neck flanges, answered by our engineering team.
Long Weld Neck Flanges are used in high-pressure systems, pressure vessels, heat exchangers, and industrial equipment where extra reinforcement and strength are required.
A Long Weld Neck Flange has an extended neck compared to a standard Weld Neck Flange, providing better stress distribution and additional structural support.
They are available in Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, Inconel, Hastelloy, Monel, Nickel Alloy, and Titanium materials.
They are commonly used in oil & gas, petrochemical plants, refineries, pressure vessels, chemical processing, power generation, offshore, and marine industries.
Long Weld Neck Flanges provide superior strength, smooth stress distribution, high-pressure resistance, excellent sealing performance, durability, and long service life.
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