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Flanges · Pipes · Fittings

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  • FlangesExpand
    • ASME/ANSI B16.47Expand
      • Series AExpand
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
      • Series BExpand
        • Class 75 Welding Neck
        • Class 75 Blind Flange
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
    • ASME/ANSI B16.5Expand
      • ANSI B16.5 Class 150 Flanges
      • ANSI B16.5 Class 300 Flanges
      • ANSI B16.5 Class 400 Flanges
      • ANSI B16.5 Class 600 Flanges
      • ANSI B16.5 Class 900 Flanges
      • ANSI B16.5 Class 1500 Flanges
      • ANSI B16.5 Class 2500 Flanges
    • Flange typesExpand
      • Weld Neck Flanges
      • Slip-On Flanges
      • Blind Flanges
      • Lap Joint Flanges
      • Socket Weld Flanges
      • Threaded Flanges
    • Flange StandardExpand
      • ANSI Flange Standard
      • ASME Flange Standard
      • EN Flange Standard
    • Custom Flanges
    • Flange MaterialExpand
      • Stainless Steel Flanges
      • Carbon Steel Flanges
      • Alloy Steel Flanges
  • FittingsExpand
    • ElbowExpand
      • 45-Degree Long Radius Elbow
      • 90-Degree Long Radius Elbow
      • 180 Degree Long Radius Bend
      • 45-degree Elbow Pipe Fitting
      • 90-Degree Short Radius Elbow
      • 180-Degree Short Radius Bend
  • PipesExpand
    • Insulated Steel Pipe
    • Anti-corrosion Steel Pipe
  • About UsExpand
    • Blog
    • Help Center & FAQ
    • Project cases
    • Downloads
  • Contact
Catalog Download
YANHAO
YANHAO
Flanges · Pipes · Fittings

YANHAO Your Reliable China Flange Manufacturer, Factory & Supplier

YANHAO, with 25 years of expertise, crafts top-tier flanges right here in China. Our premium products guarantee leak-free pipelines, all at unbeatable prices. Choose YANHAO for excellence.

Yanhao Company Promotional Short Video

Welcome to YANHAO

Made in China, high-quality flanges, pipes, and fittings at competitive prices.
Panoramic View of The Factory
Elbow bending workshop
raw material pipe storage
steel pipe storage workshop
Carbon steel seamless elbows pushed to the workshop
Carbon steel elbow shaping workshop
Carbon steel elbow product storage workshop
Finished flange waiting workshop
Stainless steel pipe storage workshop
Stainless steel pipe fittings production workshop
Flange product storage workshop
Butt welding pipe production process workshop
Elbow and flange product storage workshop
Large diameter butt welding elbow bending workshop
product waiting to be shipped packaging

Welcome to YANHAO, China’s largest and most professional pipeline production base. We specialize in manufacturing high-quality carbon steel flanges, stainless steel flanges, and various pipe fittings. With advanced production equipment and years of experience, we are committed to providing you with the best products and services.

Learn more about YANHAO >

Contact us now for a free sample and quotation!

  • Tel: +86-133-1307-3735
  • Email: sales@yanhaocn.com
  • WhatsApp:  +86 13313073735

Our Product Range

At YANHAO, we understand the importance of choosing the right flange for your project. Therefore, we provide a full range of flange products, like weld neck flanges, slip-on flanges, and blind flanges. Our goal is to offer you the highest-quality products to ensure the safety, reliability, and efficiency of your piping systems.

weld neck flanges
Weld Neck Flanges (WN)

WN flange, also known as a trapped hub flange or high-hub flange, is a high-stress-containing flange. Its circular fitting component, the rim, is fitted around the circumference.

China welding neck flange products >>

Learn More
slip-on flanges
Slip-on Flanges (SO)

Slip-on flanges, as the name shows, can be easily slipped onto the end of a pipe or fitting and then welded in place. It usually has a flat face and a protruding face.

China slip-on flange products >>

Learn More
Socket Weld Flanges (SW)
Socket Weld Flanges (SW)

Socket Weld Flanges (SW) are similar to Slip-on Flanges (SO). The difference is that there is an extra piece in the middle.

China socket weld flange products >>

Learn More
blind flanges
Blind Flanges (BF)

Blind flange is also called flange cover. It is a flat, circular plate used to cover the ends of pipes, valves, or joints.

China blind flange products >>

Learn More
Socket Weld Flanges (SW)
Lap joint flange (LJ)

Consisting of two components: a stub end and a lap joint ring flange. The respective stub end is slid into the flange’s bore, and the stub end is joined to the pipe through butt welding.

China lap joint flange products >>

Learn More
Threaded flanges
Threaded Flanges (TF)

Threaded flanges are pipe flanges with internal threading to match external threads on a pipe.  The installation does not involve welding

China threaded flange products >>

Learn More

At YANHAO, we understand the importance of choosing the right flange for your project. Therefore, we provide various materials of flanges, such as carbon steel, alloy steel, stainless steel, etc.

Stainless Steel Flanges
Stainless Steel

They look shiny and smooth, usually with a bright silver color.

Learn More
Carbon steel flanges
Carbon steel

They look darker and might feel a bit rough. They are usually black or gray.

Learn More
Alloy Steel Flanges
Alloy Steel

The exact color and surface can vary depending on what other metals are mixed in.

Learn More

Why Choose YANHAO?

Unbeatable price, quality, innovation, and customer satisfaction.

With over 25 years of industry experience, we bring unparalleled expertise to every project. Our state-of-the-art manufacturing facilities and rigorous quality control processes ensure that each flange we produce meets the highest international standards.

We offer competitive pricing without compromising on quality, making YANHAO not just a reliable but also a cost-effective solution for all your flange needs. Choose YANHAO for a partnership built on quality, innovation, and customer satisfaction.

Group Photo of YANHAO Companys Outstanding Employees at the 2024 Annual Party
Group Photo of YANHAO Company’s Outstanding Employees at the 2024 Annual Party

Price Advantage

China is the production place of flange raw materials, and YANHAO is a professional flange factory. Trusting YANHAO can help you save a lot of costs. Our unbeatable prices ensure you get the best value for your investment.

Production Capacity

As China’s leading flange manufacturer, we have advanced production equipment and many years of actual manufacturing experience. Our strong production capacity allows us to meet large orders and tight deadlines with ease.

Sales Service

Timely delivery within the specified time frame, dedicated docking service available 24/7, and one-year quality assurance. We prioritize customer satisfaction and are always here to support you.

Learn More About our Advantages

Custom Flange Solutions

Let YANHAO be your partner in creating the perfect flange for your unique needs.

At YANHAO, we understand that your projects may require unique flange solutions.

That’s why we offer custom flange manufacturing services. Whether you need a specific size, material, or design, our team of experts will work closely with you to bring your vision to life.

From initial design to final delivery, we ensure that your custom flanges meet your exact specifications and requirements.

Get a quotation for free!
Learn More About Customization
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1

requirements
Confirmation

Communicate in detail to determine the requirements for flange size, material, pressure, connection method, etc.

2

Design drawings

Our professional engineers will design flange drawings for you. The drawings will specify the size, shape, thickness, etc., of the flange in detail.

3

Choose materials

Select suitable flange materials according to the requirements of the engineering project.

4

Customer confirmation

Send detailed information, such as the designed drawings and materials, to the customer for confirmation.

5

Processing sample

To ensure accuracy, first produce a sample according to the drawings and selected materials and send it to the customer for trial confirmation.

6

Production of bulk goods

After confirming the accuracy of the samples, proceed with mass production.

Our Business Partners and Clients

Trusted by our partners and clients for over 25 years
BAOGANG GROUP
DELONG STEEL
TPCO
ANSTEEL
BAOWU
SHOUGANG GROUP
TSINGSHAN HOLDING GROUP
SHAGANG GROUP
China Sinopec
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DONGFANG ELECTRIC
Saudi Aramco
GAZPROM
image 14
BASF SE
image 15
GlaxoSmithKline
image 17
TSINGTAO BEER
AB InBev
Sonya Martin e1716518547550
Sonya Martin

Norcross, GA

5 star rating
5 star rating
5 star rating
5 star rating
5 star rating

“The Chinese flange is good, very good, and I will buy from you next time.”

Алексей e1716518605604
Алексей

Russia

5 star rating
5 star rating
5 star rating
5 star rating
5 star rating

“Still delivered in time for exceptional circumstances and didn’t delay my project!”

Ariana e1716519024417
Ariana

Iran

5 star rating
5 star rating
5 star rating
5 star rating
5 star rating

“I am custom-made flanges, exactly as we expected, thank you.”

08

Iranian Customer Mohammad’s Travel in China

202404223 1

Middle Eastern customers visit Yanhao pipe fittings factory

20240417 01

An American energy supplier-Finishing Flange Project

SUEZ Water Technologies & Solutions - Water Treatment Projects

SUEZ Water Technologies & Solutions – Water Treatment Projects

Novartis AG - Pharmaceutical Plant Project

Novartis AG – Pharmaceutical Plant Project

Siemens - Power Plant Project with Flanges and Fittings

Siemens – Power Plant Project with Flanges and Fittings

BASF - New Plant Installation Project

BASF – New Plant Installation Project

Subsea Oil and Gas Development Project

TechnipFMC plc – Subsea Oil and Gas Development Project

TotalEnergies Oil Energy Projects

TotalEnergies – Oil & Energy Projects

20240424170214

Flange pipe fittings use cases in oil projects

Industry knowledge

Here to share with you all sorts of relevant knowledge and information about pipe flanges.

ASME vs ANSI Flanges: Understanding the Differences and Similarities

2024-11-04

Blind Flanges: Types, Uses, and Key Features

2024-12-09

Top 10 China Flange Manufacturers and Suppliers

2025-02-11

Flange Dimensions: What Do ID and OD Mean?

2024-09-25

Flange Types: A Comprehensive Guide and Their Applications

2024-12-11

How a Flange Is Made: The Flange Production/Manufacturing Process

2023-11-13

Slip-On Flanges: Types, Uses, and Installation Guide

2024-12-07

Understanding Weld Neck Flanges: Types and Applications

2024-12-07

How to Install Pipe Flanges: a Step-by-step Guide

2024-11-04

Socket Weld Flanges: Features, Uses, and Material Guide

2024-12-09

What Are Threaded Flanges? A Complete Overview

2024-12-11

Lap Joint Flanges: Everything You Need to Know

2024-12-11

Having Questions? Contact Now!

  • Tel: +86-133-1307-3735
  • Email Us: sales@yanhaocn.com
  • Whatsapp:  +86 13313073735

As a leading Chinese flange manufacturer, we are committed to delivering superior-quality pipe flanges at competitive prices.

Our extensive experience and cutting-edge production technology ensure that our products meet the highest industry standards.

We pride ourselves on our ability to provide tailored solutions to meet the diverse needs of our clients, ensuring that our flanges are perfectly suited for a wide range of applications.

Trust us to be your reliable partner for all your flange requirements.

Service

  • Custom Flanges

Flange Types

  • Weld Neck Flanges
  • Socket Weld Flanges
  • Slip-On Flanges
  • Lap Joint Flanges
  • Threaded Flanges
  • Blind Flanges

Flange Materials

  • Stainless Steel Flanges
  • Carbon Steel Flanges
  • Alloy Steel Flanges

Flange Standards

  • B16.47 Flanges
  • B16.5 Flanges
  • EN Standard Flange

Quick Links

  • Home
  • About Us
  • Contact
  • Project Cases
  • Resources
  • Blog

© 2000 - 2025 Hebei Yanhao Pipeline Equipment Co., Ltd.

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  • Home
  • Flanges
    • ASME/ANSI B16.47
      • Series A
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
      • Series B
        • Class 75 Welding Neck
        • Class 75 Blind Flange
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
    • ASME/ANSI B16.5
      • ANSI B16.5 Class 150 Flanges
      • ANSI B16.5 Class 300 Flanges
      • ANSI B16.5 Class 400 Flanges
      • ANSI B16.5 Class 600 Flanges
      • ANSI B16.5 Class 900 Flanges
      • ANSI B16.5 Class 1500 Flanges
      • ANSI B16.5 Class 2500 Flanges
    • Flange types
      • Weld Neck Flanges
      • Slip-On Flanges
      • Blind Flanges
      • Lap Joint Flanges
      • Socket Weld Flanges
      • Threaded Flanges
    • Flange Standard
      • ANSI Flange Standard
      • ASME Flange Standard
      • EN Flange Standard
    • Custom Flanges
    • Flange Material
      • Stainless Steel Flanges
      • Carbon Steel Flanges
      • Alloy Steel Flanges
  • Fittings
    • Elbow
      • 45-Degree Long Radius Elbow
      • 90-Degree Long Radius Elbow
      • 180 Degree Long Radius Bend
      • 45-degree Elbow Pipe Fitting
      • 90-Degree Short Radius Elbow
      • 180-Degree Short Radius Bend
  • Pipes
    • Insulated Steel Pipe
    • Anti-corrosion Steel Pipe
  • About Us
    • Blog
    • Help Center & FAQ
    • Project cases
    • Downloads
  • Contact