Steel Pipes, Buttweld Pipe Fittings, Forged Fittings, Steel Flanges China Manufacturers & Suppliers & Factory

Best Fittings, Just From Haiyuan FITTINGS

Hebei Haiyuan Pipe Fittings Co., Ltd., founded in 1998, is a pioneering and high-tech manufacturing enterprise specialized in the research and development, manufacturing, and sales of pipe elbows and flanges. Strategically located in Mengcun Hui Autonomous County—the world-renowned "Capital of Pipe Fittings" in China, the company has developed and expanded over nearly three decades, evolving into a regional leading manufacturer in the pipe fittings industry.

30⁺_Years

Experience Working

43⁺_{Senior Engineers}

Professional Team

30000⁺_㎡

Factory

Our Products

BW Pipe Fittings< Forged Fitting< Pipe Flanges< Steel Pipe<

WELDOLET

THREADOLET

SOCKOLET

THREADED/SOCKET WELD UNION

NIPPLE/HALF COUPLING

THREADED/SOCKET WELD TEE

THREADED/SOCKET WELD CROSS

THREADED/SOCKET WELD STRAIGHT ELBOW

THREADED/SOCKET WELD 45D/90D ELBOW

EN 1092-1_WELDING PLATE FLANGES

EN 1092-1_TYPE 11-B WELD NECK FLANGE

EN 1092-1_TYPE 05-A BLIND FLANGE

EN 1092-1_TYPE 02 PRESSED LOOSE FLANGE

EN 1092-1_TYPE 01-B WELDING FLANGE RF

EN 1092-1_02 LAP JOINT FLANGE (ISO TYPE DIN 2642)

EN 1092-1 type 37 WELDING COLLARS

Customized Solutions For All Industries

Our products are widely used in Petroleum, Chemical Industry, Natural Gas, Power Plant, Shipbuilding, Metallurgy, Urban Construction, Wastewater Treatment and other engineering fields.

Desalination

Electric Power

Mechanical

Offshore

Oil

Petrochemical

Refinery

Ship Building

Waste Treatment

Water Treatment

Helping Customers Create Higher Value With Our Professional Services

Gain the trust and support of customers in China, Europe, North America, South America, Southeast Asia, Central Asia and the Middle East, etc.

Safety You Can Trust, Efficiency You Can Count On

Focus On Precision

Specializes in high-precision pipe elbows and flanges solutions

Professional Management

Implements standardized whole-process production management practice

Quick Response

Renowned for timely service and rapid
response to customer needs

Efficient And Stable

Strict full-process quality inspection
to guarantee product quality from the source

Latest News

Blog June 16,2026

A Complete Guide to ASTM, ASME, ANSI, DIN, and JIS for Pipe Fittings

In industrial piping engineering and international procurement, procurement managers and technical engineers frequently encounter a complex web of acronyms: ASTM, ASME, ANSI, DIN, and JIS. When buying or…

Blog June 15,2026

How to conduct Hydrostatic Testing and Non-Destructive Testing for Pipe Fittings when inspect in factories?

Conducting Hydrostatic Testing and Non-Destructive Testing (NDT) during factory inspection ensures that pipe fittings can safely withstand operational pressures and are free from internal or surface defects. Here…

Blog June 11,2026

Tolerance of Flanges under standard ASME B16.5

Tolerance ASME B16.5 flange dimensions including different pressure ratings for weld neck flange, slip on flange, blind flange, reducing flange, socket weld flange, threaded flange, view below for…

Blog June 11,2026

Why Do Pipe Fittings Explode After Welding During the Testing Process?

Imagine this scenario: Your team has just finished fabricating a piping system. The welds look clean, the layout is perfect, and you proceed to the pressure testing phase…