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 August 25,2026

Understanding S355J2H Steel Tubing: Properties, Standards, and Equivalent Grades

When sourcing structural steel tubing for demanding projects, S355J2H is one of the most widely specified European grades. Known for its high yield strength and low-temperature impact resistance,…

Blog July 30,2026

Pipe Fitting Dimensions, Wall Thickness, and Pressure Ratings Explained

If you’ve ever worked on an industrial piping project, ordered replacement fittings, or tried to match a piece of pipe at a hardware store, you know how quickly…

Blog June 26,2026

Steel Pipe Dimensions Chart ANSI B36.10 & 36.19

Nominal Diameter Pipe OD ANSI B36.10 B36.19 STEEL PIPE WALL THINKNESS SERIES mm inch （mm) SCH5S SCH10S SCH10 SCH20 SCH30 SCH40S STD SCH40 SCH60 SCH80S XS SCH80 SCH100…

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…