Flat Welding Flange

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Flat Welding Flange

The flat welding flange  is a widely used piping fitting designed to connect pipes, valves, or equipment in industrial and commercial systems. Its defining feature is a flat, circular disc with a central bore (matching the pipe’s inner diameter) and bolt holes around the perimeter, enabling secure, leak-resistant joints via welding.Its smooth sealing surface (FF) ensures leak-free operation in non-toxic, low-pressure applications such as municipal water networks, HVAC systems, and general industrial pipelines, while the reinforced concave-convex (MF) face enhances sealing integrity for slightly more demanding environments.

SPECIFICATIONS
product details

Diameter range

DN15(1/2")-DN3000(119")

 pressure rating

PN6-PN16

Certificate

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

Function introduction

Simple welded structure, Cost-effective solution, Easy installation, FF (Flat Face) for low-pressure non-toxic media, MF (Male-Female) for enhanced sealing

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;

Crafted from durable carbon steel or stainless steel, it resists corrosion and mechanical stress, making it a versatile choice for industries ranging from food processing to chemical manufacturing, where hygiene and ease of maintenance are prioritized. The compact, lightweight design simplifies retrofitting and alignment, reducing downtime during system expansions or repairs. Whether used in agricultural irrigation, pharmaceutical facilities, or marine piping, the Slip On Flange adapts seamlessly to diverse layouts, ensuring compliance with ASME and EN standards. By balancing affordability with robust engineering, it empowers engineers to optimize infrastructure costs without sacrificing safety. Upgrade your pipeline systems today with our Flat Welding Flanges—where simplicity meets strength, enabling you to build smarter, maintain easier, and operate with confidence. Choose efficiency, choose reliability, and transform your pipeline infrastructure today.

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 Flat Welding Flange Suppliers and Custom carbon steel Flat Welding 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.
Flat Welding Flange
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