• Flat Welded Ring Flange Manufacturer in China
  • Flat Welded Ring Flange Manufacturer in China

Flat Welded Ring Flange Manufacturer in China

Flat welded ring flange manufacturer in China. Senrui Pipe supplies high-quality plate flanges for oil & gas, petrochemical and industrial pipeline systems. Custom sizes, ASME & EN standards, fast delivery.
  • Flat Welded Ring Flange Manufacturer in China

Description

  Introduction

Flat welded ring flange is a widely used pipe connection component in industrial pipeline systems. It is designed for cost-effective, stable and easy installation connections in medium and low pressure piping applications.

As a professional flange manufacturer in China, Senrui Pipe supplies high-quality flat welded ring flanges for global industries including oil & gas, petrochemical, power generation, water treatment and offshore engineering.

All products are manufactured according to international standards such as ASME B16.5, EN1092-1, DIN and GB/T, ensuring reliable performance and long service life.

  Product Overview – What is Flat Welded Ring Flange?

A flat welded ring flange (also known as plate flange or flat face welded flange) is a type of flange that connects pipelines through welding and bolting.

It is mainly used in systems where:

  • Low to medium pressure is required
  • Easy installation is important
  • Cost efficiency is a priority

Compared with forged flanges, flat welded ring flanges are more economical and widely used in large-scale industrial piping systems.

  Key Features of Flat Welded Ring Flange

  • ✔ Cost-effective solution for pipeline systems
  • ✔ Easy welding and installation process
  • ✔ Suitable for large diameter pipelines
  • ✔ Stable sealing performance
  • ✔ Available in carbon steel, stainless steel and alloy materials
  • ✔ Custom sizes according to project requirements

  Specifications & Size Range

We manufacture and supply a wide range of specifications:

  • Size Range: DN15 – DN3600 (½” – 144”)
  • Pressure Rating: PN2.5 – PN100 / Class 150 – Class 600
  • Face Type: Flat Face (FF), Raised Face (RF)
  • Connection Type: Welding + Bolted connection
  • Production Standard: ASME / EN / DIN / GB

Custom production is available based on drawings and engineering requirements.

  Materials

We provide multiple material options to meet different industrial needs:

Carbon Steel

  • ASTM A105
  • ASTM A350 LF2

Stainless Steel

  • ASTM A182 F304 / F304L
  • ASTM A182 F316 / F316L

Alloy & Special Materials

  • Duplex Stainless Steel
  • Super Duplex
  • Nickel Alloy Materials

  Manufacturing Standards

Our products comply with international standards:

  • ASME B16.5
  • EN1092-1
  • DIN Standard
  • BS4504
  • GB/T Series

Each flange is produced under strict quality control to ensure dimensional accuracy and mechanical strength.

  Applications

Flat welded ring flanges are widely used in:

  • Oil & Gas Pipeline Systems
  • Petrochemical & Refinery Plants
  • Offshore Engineering Projects
  • Water Supply & Treatment Systems
  • Power Generation Systems
  • Industrial Machinery Piping

They are ideal for both general industrial use and engineering project procurement.

  Advantages of Choosing Senrui Pipe

  • ✔ Direct factory supply from China
  • ✔ Competitive pricing for bulk orders
  • ✔ Stable production capacity for large projects
  • ✔ Strict quality inspection before shipment
  • ✔ Export experience worldwide
  • ✔ OEM and customized solutions available

We help global buyers reduce procurement cost while ensuring product reliability.

  Quality Control & Testing

To ensure high performance and safety, every batch of flanges undergoes strict inspection:

  • Chemical composition analysis (PMI test)
  • Ultrasonic testing (UT)
  • Magnetic particle testing (MT)
  • Dimensional inspection
  • Pressure and sealing performance testing

Material Test Certificates (MTC) and third-party inspection reports can be provided upon request.

  Why Flat Welded Ring Flange is Widely Used

This type of flange is widely used because it offers a balance between cost, performance and installation efficiency.

It is especially suitable for projects where:

  • Large diameter pipelines are required
  • Budget optimization is important
  • Medium pressure systems are used

  FAQ – Flat Welded Ring Flange

Q1: What is a flat welded ring flange used for?

It is used to connect pipes in low to medium pressure pipeline systems such as oil, gas, water and industrial applications.

Q2: What is the difference between flat welded ring flange and weld neck flange?

Flat welded ring flanges are more economical and suitable for lower pressure systems, while weld neck flanges are designed for high-pressure and high-temperature applications.

Q3: Can you produce custom flange sizes?

Yes, we support customized production based on drawings, standards or project requirements.

Q4: What materials are available?

We offer carbon steel, stainless steel, alloy steel and special materials based on customer requirements.

Q5: Do you provide certificates?

Yes, we provide MTC (EN10204 3.1), and third-party inspection certificates if required.

  Contact Us for Quotation

If you are looking for a reliable flat welded ring flange manufacturer in China, please contact us for a fast quotation.

Send us your inquiry with:

  • Size
  • Material
  • Pressure rating
  • Standard

Our team will respond quickly with the best solution for your project.