Long Weldneck Flanges Manufacturers like Metafit Piping Industries play a critical role in delivering high-strength flanges that support heavy-duty pipeline systems across the globe. Our Long Weldneck Flanges are engineered for high-pressure, high-temperature environments where durability and seamless pipe alignment are non-negotiable. Manufactured in India and supplied worldwide, our flanges meet the diverse needs of oilfields in the Middle East, offshore rigs in Norway, and chemical processing plants in Germany. With a reputation for precision and global reach, Metafit is the trusted choice for professionals demanding reliability and longevity.
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What is Long Weldneck Flanges?
So, what exactly is a Long Weldneck Flange? It’s a specialized flange with an extended neck that ensures a smooth transition from flange to pipe, minimizing stress concentration. These flanges are typically used in critical systems where repeated bending, pressure fluctuations, or high-temperature resistance is required. As top-tier Long Weldneck Flanges Suppliers, we provide solutions across various sizes, schedules, and materials including carbon steel, stainless steel, and alloy steel—all certified to ANSI, ASME, EN, and DIN standards.
Advantages of Long Weldneck Flanges?
The main advantages of using Long Weldneck Flanges lie in their structural integrity and stress distribution. Because the long neck reinforces the flange, it becomes ideal for conditions where piping systems are exposed to mechanical stress. Our flanges offer unmatched leak-proof connections, long service life, and easy weldability. As leading Long Weldneck Flanges Exporters, we ensure each flange passes rigorous testing, including ultrasonic, hydrostatic, and PMI checks. Our products are widely accepted by engineering firms in the UK, shipbuilders in South Korea, and refineries in Saudi Arabia due to our proven quality.
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Industry That Use Slip of flanges?
Long Weldneck Flanges Stockists at Metafit maintain ready-to-ship inventory for clients working in different sectors, ensuring zero downtime. Our flanges are widely used in industries such as:
- Long Weldneck Flanges for Oil & Gas Industry — used in upstream, midstream, and downstream applications where durability is critical.
- Long Weldneck Pipe Flanges for Petrochemical Plants — ensuring leak-free operation under high-pressure environments.
- Long Weld Neck Flanges in Power Generation — ideal for steam lines and high-heat transfer systems.
- Long Weldneck Flanges for Shipbuilding — offering resistance to seawater corrosion and high mechanical loads.
- Long Weldneck Flange Applications in Chemical Processing — withstanding aggressive chemical reactions and pressure fluctuations.
- Long Weld Neck Flanges in Water Treatment — enabling high-volume flow management and anti-corrosion performance.
Metafit Piping Industries complies with international flange standards such as ASME B16.5, ANSI B16.47, EN 1092-1, and ISO 7005-1. We offer Long Weldneck Flanges in grades like ASTM A105, A182 F304/F316, and A350 LF2. This wide range allows us to cater to diverse markets including Canada, Japan, and Australia. Our compliance with global norms ensures seamless integration into any pipeline design regardless of regional code requirements.
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Globally, Long Weldneck Flanges go by various naming conventions. In the United States, they’re commonly called Long Neck Weld Flanges, while European countries often refer to them as Extended Hub Weld Flanges. In the Middle East and North Africa, engineers may request Weld Neck Long Series flanges. Asian markets like China and South Korea frequently call them Heavy Weld Neck Flanges. Understanding these naming variations helps us bridge language and specification gaps across international supply chains.
Long Weldneck Flanges Specifications?
| ASME B16.5 Long Weld Neck Flanges Size Chart | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
|---|---|
| Long Weld Neck Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Long Weld Neck Flanges, ASME Long Weld Neck Flanges, BS Long Weld Neck Flanges, DIN Long Weld Neck Flanges, EN Long Weld Neck Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Long Weld Neck Flanges Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Long Weld Neck Flanges |
| Long Weld Neck Flanges Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Long Weld Neck Flanges |
| JIS long weld neck flange ASME B16.5 | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Long Weld Neck Flanges |
| UNI carbon steel long weld neck flange | 6Bar 10Bar 16Bar 25Bar 40Bar Long Weld Neck Flanges |
| EN ANSI B16 5 long weld neck flange | 6Bar 10Bar 16Bar 25Bar 40Bar Long Weld Neck Flanges |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Long Weld Neck Flanges |
| Most common types of Long Weld Neck Flanges | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production technique |
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| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Special design |
As per your drawing AS, ANSI, BS, DIN and JIS |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Long Weld Neck Flange manufacturers |
ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
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| Long Weld Neck Flanges Uses & application |
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| Export to ASME B16.5 Long Weld Neck Flanges | Ireland, Singapore, Indonesia, Ukraine, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Korea, Iran, India, Egypt, Oman, Dubai, Peru, etc |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
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