Weld Neck Flange

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Weld Neck Flange

The Weld Neck Flange stands as the ultimate solution for high-pressure, high-temperature environments, engineered to deliver unmatched reliability through its robust butt-welded connection and precision-manufactured sealing surface. Designed for critical applications, this flange integrates seamlessly with pipelines via a full-penetration butt weld, creating a monolithic structure that withstands extreme pressures, thermal fluctuations, and mechanical stress—making it indispensable in oil refineries, petrochemical plants, and nuclear power systems. Its tapered neck design not only reinforces structural integrity but also minimizes stress concentration, ensuring long-term performance in demanding conditions. The production process—spanning advanced forging, stress-relieving heat treatment, precision finishing, rigorous non-destructive testing (NDT), and anti-corrosion surface treatments—guarantees a component that exceeds industry standards for safety and durability.

SPECIFICATIONS
product details

Diameter

DN15(1/2")-DN3500(138")

Pressure

0.25-25MPa

Certificate

PED, AD2000, EAC, ABS, BV, DNV, NORSOK M650, ISO9001, ISO14001, ISO45001, etc.

Function introduction

Butt-weld connection provides high-strength sealing for high-pressure (HP) and high-temperature (HT) applications, ensuring leak-proof performance under extreme conditions

Application fields

Applicable to pipe flange connections in long-distance oil and gas pipelines, offshore platforms, chemical equipment, water treatment systems, and food and pharmaceutical industries, adapted to complex working conditions.

Packing

Seaworthy package, Plywood Cases or pallet or as per customers requirement

Featured Products

1、Small batch minimum order;
2、Fast delivery;
3、Customized production;

From subsea pipelines enduring corrosive seawater to steam turbines operating at scorching temperatures, the Weld Neck Flange ensures leak-proof sealing and operational continuity. Industries requiring uncompromising quality, such as aerospace fluid systems or cryogenic storage, rely on its ability to maintain integrity under cyclic loading and harsh media exposure. By combining superior material resilience with precision engineering, this flange reduces lifecycle costs through minimized downtime and maintenance. For engineers tasked with safeguarding high-stakes infrastructure, the Weld Neck Flange is the definitive choice. Elevate your system’s performance today with our premium Weld Neck Flanges—where cutting-edge manufacturing meets industrial-grade resilience, empowering your operations to conquer the extremes of pressure, temperature, and time. Choose excellence, choose endurance, and build a future-proof foundation for your critical systems.

Our Production Process

From raw material to final delivery, we maintain rigorous control at every stage to ensure durability,performance, and consistency.

  • 01
    Cutting
  • 02
    Heating
  • 03
    Forging
  • 04
    Heat treatment
  • 05
    Rough machining
  • 06
    Non destructive examination
  • 07
    Machining by CNC lathe
  • 08
    Surface treatment
  • 09
    Final inspection
  • 10
    Marking
  • 11
    Packing
  • 12
    Shipment
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Jiangyin Gaoxin Pipe Fittings Co., Ltd.
About Us
JIANGYIN GAOXIN PIPE FITTINGS CO.,LTD.
Our company is a professional manufacturer of pressure piping components. As China stainless steel Weld Neck Flange Suppliers and Custom carbon steel Weld Neck Flange Company.Our product range covers butt-weld, socket-weld, and threaded pipe fittings, including flanges and customized non-standard parts. These products are widely used in industries such as oil & gas, chemical processing, power generation, shipbuilding, papermaking, metallurgy, pharmaceuticals, and food processing. We manufacture according to standards such as ASME, EN,JIS,DIN,ANSI,GOST, MSS, GB/T,HG, DL, SH, SY,and have a complete range of inspection equipment, a strict quality control system, and various certifications(PED,AD2000,EAC, ABS,BV, DNV,NORSOK M650, ISO9001,ISO14001,ISO45001,etc.), making us a leader in the industry.
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Jiangyin Gaoxin Pipe Fittings Co., Ltd.
Weld Neck Flange
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