Weld Neck Flanges Manufacturer & Exporter | ASME, ANSI, DIN, EN, JIS | Dipti Metal India
Weld Neck Flanges Manufacturer, Exporter & Supplier – All Grades & Standards
Dipti Metal Industries, based in Mumbai, India, is a trusted global manufacturer and exporter of Weld Neck Flanges (WNRF) in all steel grades and sizes. Designed for high-pressure and high-temperature applications, our flanges are fully compliant with international standards including ASME B16.5, ASME B16.47, EN 1092-1, DIN, BS, JIS, and others.
With over 30 years of manufacturing experience, Dipti Metal Industries exports WNRF flanges to more than 75 countries across the Middle East, Europe, Asia, Africa, and the Americas.
Types of Weld Neck Flanges Supplied
- Standard Weld Neck Flange – Raised Face (RF)
- Weld Neck Flange – Flat Face (FF)
- Weld Neck Flange – Ring Type Joint (RTJ)
- Long Weld Neck Flange (LWN)
- Heavy Barrel Type WN Flanges
- Custom machined weld neck flanges as per drawing
Grades We Offer
Carbon Steel
- ASTM A105 / A350 LF2 / A694 F42, F52, F60, F65, F70
- IS 2062, S235JR, S355J2, C45
Stainless Steel
- ASTM A182 F304, F304L, F316, F316L, F321, F347
- Duplex: UNS S31803, S32205
- Super Duplex: UNS S32750, S32760
Alloy Steel
- ASTM A182 F1, F5, F9, F11, F22, F91
Nickel & Exotic Alloys
- Inconel 600, 625, 800, 825
- Monel 400, K500
- Hastelloy C22, C276
- Titanium Gr.2 / Gr.5
- Copper Nickel (Cu-Ni 70/30, 90/10)
Standards & Specifications
- ASME B16.5 – ½" to 24" Class 150 to 2500
- ASME B16.47 Series A & B – 26" to 60"
- EN 1092-1 Type 11 / Type 21
- DIN 2631 / 2632 / 2633 / 2634 / 2635
- JIS B2220 / BS 3293 / ISO 7005-1
- NACE MR0175 / MR0103 for sour service
Why Choose Dipti Metal Industries?
- Wide material range from carbon steel to super alloys
- State-of-the-art forging & CNC machining
- EN 10204 3.1 / 3.2, IBR, PED, ISO certified
- Short lead times and global delivery network
- Third-party inspection by TUV, BV, SGS available
Applications of Weld Neck Flanges
- Petrochemical & Refineries
- Power Plants & Thermal Stations
- Offshore & Onshore Pipelines
- Shipbuilding & Marine Systems
- Oil & Gas Transmission Lines
- Chemical Processing & Desalination Plants
Export Destinations
We export to 75+ countries including:
- Middle East: Saudi Arabia, UAE, Qatar, Oman, Iraq
- Asia: Singapore, South Korea, Vietnam, Malaysia, Japan
- Europe: UK, Germany, Italy, Netherlands, France
- Americas: USA, Canada, Brazil, Mexico
- Africa: Nigeria, Kenya, Egypt, South Africa
- Oceania: Australia, New Zealand
Frequently Asked Questions (FAQ)
What is a Weld Neck Flange?
A weld neck flange (WNRF) is a type of flange with a long tapered hub that is butt-welded to the pipe. It provides excellent stress distribution and is ideal for high-pressure, high-temperature pipelines.
Which standards are supported for Weld Neck Flanges?
Dipti Metal supplies WNRF flanges to ASME B16.5, B16.47 Series A/B, EN 1092-1, DIN 2633, BS 3293, JIS B2220, and ISO 7005 standards.
Do you offer flanges in exotic materials like Inconel or Titanium?
Yes. We manufacture and export WNRF flanges in exotic alloys including Inconel, Monel, Hastelloy, Titanium, and Copper Nickel grades as per project needs.
Do you provide MTC and Third-Party Inspection?
Yes, all products come with EN 10204 3.1 or 3.2 test certificates. TPI agencies like TUV, SGS, and BV are supported upon client request.
Request a Quote from Dipti Metal Industries – India’s top-rated manufacturer and exporter of weld neck flanges in all standards and grades.
Related Pages
ASME B16.5 Flanges | Forged Steel Flanges | Long Weld Neck Flanges
