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Weld Neck Flange

Distributing world-class weld neck flanges from Montex Forge Industries, Avanti Products Pvt. Ltd. offers solutions designed for high-pressure, high-temperature piping systems. These flanges deliver superior stress distribution and seamless integration, manufactured to ASME/ANSI/DIN specifications using carbon, alloy, and stainless steel.

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Description

Avanti Products Pvt. Ltd. distributes premium weld neck flanges manufactured by Montex Forge Industries—renowned for engineering high-integrity flanges suited for critical service conditions. These flanges are welded to the pipe neck, providing reinforcement and minimizing stress concentrations at the base. They are particularly recommended for high-pressure and fluctuating temperature environments such as refineries, power plants, and chemical processing units.
Produced as per ASME/ANSI B16.5 and DIN standards, Montex weld neck flanges are offered in carbon steel, stainless steel, and specialty alloy grades. Their precise inner bore ensures flow consistency and structural reliability, making them the preferred choice for demanding industries worldwide.

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At Montex Forge Industries , all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates:

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

Technical Information – Specifications, Dimensions Weld Neck Flanges

  • ANSI/ASME B16.5 Welding Neck Flange 150lb
  • ANSI/ASME B16.5 Welding Neck Flange 300lb
  • ANSI/ASME B16.5 Welding Neck Flange 400lb
  • ANSI/ASME B16.5 Welding Neck Flange 600lb
  • ANSI/ASME B16.5 Welding Neck Flange 900lb
  • ANSI/ASME B16.5 Welding Neck Flange 1500lb
  • ANSI/ASME B16.5 Welding Neck Flange 2500lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 75lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 150lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 300lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 600lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 400lb
  • ANSI/ASME B16.47 Series B Weld Neck Flange 900lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 150lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 300lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 400lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 600lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 900lb

Production Range

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