Made in the Central Plains, National Standard Quality
Zhongyuan Pipeline: Connecting the World Through Pipes

Made in the Central Plains, National Standard Quality

Two liquid epoxy coating production lines for inner and outer surfaces, ranging from φ406.4 to φ3620 mm, and two epoxy powder coating production lines for inner and outer surfaces, ranging from φ406.4 to φ2540 mm.

Zhongyuan Pipeline: Connecting the World Through Pipes

Our company has an annual production capacity of 1 million tons of steel pipes and 1.6 million square meters of anti-corrosion steel pipes.

Product Categories

Product Category

Spiral steel pipe

Manufactured using proven welding processes, it delivers excellent pressure‑bearing performance and robust welds, with a full range of specifications and compliance with relevant quality standards. It is suitable for a variety of applications, including oil and gas transmission, municipal water supply and drainage, hydraulic engineering, and pile foundation projects.

Anti-corrosion steel pipe

It employs high-quality steel pipe substrates and a variety of mainstream anti-corrosion technologies, delivering excellent corrosion resistance. It is suitable for a wide range of corrosive environments, including underground pipelines, chemical plants, and wastewater systems.

Recommended

Recommended Products

Spiral steel pipe

Spiral-welded steel pipes are suitable for corrosion protection of various steel structures, sluice gates, gas storage tanks, docks, ships, and equipment in refineries and chemical plants, as well as for waterproofing and leak prevention in concrete structures such as sewage ponds, concrete pipes, rooftop waterproofing layers, basements, and bathrooms. They are also widely used for external corrosion protection of underground or submerged steel pipelines transporting gas, oil, heat, and water.

Spiral steel pipe

Bending in the fabrication of spiral‑welded steel pipes: Sheet material can be bent through 180°; however, to minimize cracking on the curved surface, the bend radius should be at least twice the plate thickness. For thick plates, the bend radius is specified twice—once along the rolling direction and perpendicular to it. In welding applications, a bend radius of four times the plate thickness is recommended. To prevent cracking during fabrication, the weld area should be ground smooth. As for repairing cracks in spiral‑welded pipes, stainless steel with heat‑resistant properties is often employed. This material exhibits excellent oxidation resistance and corrosion resistance, making it well suited for alkali‑service piping in ion‑membrane electrolysis. Nevertheless, due to the stringent technical requirements of the material, any deficiencies—such as incomplete alloying elements in the base metal, inadequate filler materials, improper welding procedures, adverse operating conditions, corrosive media within the pipeline, or residual working stresses—can lead to serious defects and pose significant safety risks. Therefore, crack repair remains an effective maintenance approach.

Spiral steel pipe

During the fabrication of longitudinal spiral welded pipes, weld‑seam processing is fundamental to the product. Weld‑seam treatments are generally categorized into three types. Below, we will examine the weld seams encountered during fabrication: 1) All welds in branch pipes; 2) Longitudinal seams in the pipe wall; 3) Circumferential seams of the pipe; 4) Closed circumferential seams formed by crimping; and 5) Welds between diaphragms and the pipe wall. When these welds are inspected using ultrasonic testing, the inspection rate is 50%; radiographic inspection yields a 5% inspection rate; and the quality requirement is B1.

Spiral steel pipe

Spiral-welded steel pipes are suitable for corrosion protection of various steel structures, sluice gates, gas storage tanks, docks, ships, and equipment in refineries and chemical plants, as well as for waterproofing and leak prevention in concrete structures such as sewage ponds, concrete pipes, rooftop waterproofing layers, basements, and bathrooms. They are also widely used for external corrosion protection of underground or submerged steel pipelines transporting gas, oil, heat, and water.

Spiral steel pipe

Spiral-welded steel pipes are suitable for corrosion protection of various steel structures, sluice gates, gas storage tanks, docks, ships, and equipment in refineries and chemical plants, as well as for waterproofing and leak prevention in concrete structures such as sewage ponds, concrete pipes, rooftop waterproofing layers, basements, and bathrooms. They are also widely used for external corrosion protection of underground or submerged steel pipelines transporting gas, oil, heat, and water.

Anti-corrosion steel pipe

3PE‑coated steel pipe refers to an externally coated steel pipe with a three‑layer polyethylene protective system, a commonly used corrosion‑resistant pipeline in the petroleum industry. The outer layer of 3PE‑coated steel pipe is a high‑density polyethylene anti‑corrosion coating; the intermediate layer consists of a copolymer adhesive containing functional groups with branching structures; and the innermost layer is an epoxy powder coating that directly contacts the steel pipe surface. 3PE‑reinforced grade corrosion‑resistant steel pipes are widely applied and produced in large quantities, primarily serving as pipelines for fluid transport or as structural components. Standard‑grade 3PE‑coated steel pipes are typically manufactured from alloy structural steels, ordinary carbon structural steels, or low‑alloy structural steels.

Anti-corrosion steel pipe

The manufacturing methods for anti-corrosion steel pipes are generally categorized into the winding type and the round-mold wrapping type. Today, countries around the world place great emphasis on research into corrosion control, and significant progress has been made in the field of pipeline anti-corrosion coatings. With no new materials or technologies emerging, anti-corrosion steel pipes have become a standard method for protecting underground long-distance pipelines. The outer surface is treated using hot‑melt winding technology, forming a three‑layer epoxy anti-corrosion coating: an inner adhesive layer and an outer polyethylene protective layer. The inner surface employs a thermal spray process with epoxy powder; the powder is heated and melted at high temperatures before being uniformly applied to the pipe’s surface, creating a steel–plastic alloy layer.
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ABOUT ZHONGYUAN

A reputable manufacturer with years of expertise in pipeline production.

Zhongyuan Pipeline Manufacturing Co., Ltd. is a modern, large-scale pipeline manufacturer that integrates pipeline R&D, production, anti-corrosion and thermal insulation, custom fabrication, engineering support, and sales and service. Located in the heart of the pipeline industry’s core production region, the company boasts an expansive facility, featuring standardized workshops, intelligent production lines, and a comprehensive suite of specialized testing equipment.

54 10,000 sq m

Land area

100 Ten thousand tons

Annual steel pipe production

613 +

Current employees

About Us

Manager’s Message

Holding hands in the Central Plains, we will always be friends. Wishing all our friends around the world an even brighter tomorrow.

Corporate culture

“Customer is God, and quality is life” is the guiding principle upheld by all employees of the company.

Qualifications and Honors

Since 2000, the company has successively obtained ISO 9001 certification for its international quality management system.

Factory Site Exhibition

The company is located in the Southern Industrial Zone of Yanshan County, Hebei Province, and operates 13 state-of-the-art spiral seam double-sided submerged-arc welded steel pipe production lines.

Talent Recruitment

Respect, nurture, and recognize every employee, while providing a platform to actively encourage their participation in the company’s innovation and development.

Service Support

Service Support

Production equipment


The testing center has been developed into a robust testing facility, characterized by strong technical expertise, state-of-the-art testing equipment, and a favorable working environment. It comprises several departments, including the Chemical and Metallographic Testing Lab, the Mechanical Properties Testing Lab, the Corrosion‑Resistance Testing Lab, and an administrative office.

Sales team


Zhongyuan Pipeline Manufacturing Co., Ltd. regards quality and reputation as the lifeblood of the enterprise, continuously enhancing its technological content, improving its technical supervision systems, and implementing integrated management for quality, environmental, occupational health, and safety standards, thereby maximizing customer satisfaction.

Download Center


The product now covers all provinces, municipalities, and autonomous regions across China and is exported to countries and regions including Venezuela, Iran, India, Pakistan, Chile, Spain, Canada, the Netherlands, Peru, and Italy.

Providing a one-stop solution!


In March 2017, both the “Shixing‑brand epoxy powder‑coated steel pipe for water supply” and the “Shixing‑brand liquid epoxy‑coated steel pipe for water supply” obtained hygiene approval certificates from Hebei Province for domestically produced products related to drinking‑water hygiene and safety.

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Service Support

News Updates

We will, with our high-quality products and comprehensive after-sales service, wholeheartedly welcome colleagues and industry leaders from all sectors to visit our company for cooperative discussions, building a bridge of friendship between us!

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2022/05/07

ACME Corporation of the United States visited our company for an inspection.

ACME Corporation of the United States visited our company for an inspection.

On April 28, 2016, Mr. Jack Goldberg, Chairman of METALS & STEEL SUPPLY INCORPORATED (ACME) of the United States, accompanied by Mr. Yang Haiyang, Vice President of Huamin Group, paid a visit to our company for an inspection and fact-finding tour.

2022/05/07

What is the difference between welded steel pipe and welded spiral steel pipe?

What is the difference between welded steel pipe and welded spiral steel pipe?

Welded steel pipe refers to steel pipe with a welded seam, manufactured by bending steel strip or steel plate into circular, square, or other cross-sectional shapes and then welding them together. The raw material used for welded steel pipe is either steel plate or steel strip. Since the 1930s, driven by the rapid development of continuous strip‑rolling production and advances in welding and inspection technologies, weld quality has steadily improved, leading to an expanding range of grades and specifications. As a result, welded steel pipe has increasingly replaced seamless steel pipe in a growing number of applications. Compared with seamless steel pipe, welded steel pipe offers lower costs and higher production efficiency.

2025/07/26

Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2025

Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2025

Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2025

2024/03/14

“Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2024”

“Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2024”

“Public Notice on the Prevention and Control of Environmental Pollution by Hazardous Waste in 2024”

2023/10/09

2023 Public Disclosure of Information on the Prevention and Control of Environmental Pollution by Hazardous Waste

2023 Public Disclosure of Information on the Prevention and Control of Environmental Pollution by Hazardous Waste

2023 Public Disclosure of Information on the Prevention and Control of Environmental Pollution by Hazardous Waste

2022/05/07

Introduction to Zhongyuan Pipeline Manufacturing Co., Ltd.

Introduction to Zhongyuan Pipeline Manufacturing Co., Ltd.

Zhongyuan Pipeline Manufacturing Co., Ltd. is located in the Southern Industrial Zone of Yanshan County, Hebei Province, covering an area of 545,000 square meters with a total construction area of 210,000 square meters. The company boasts total assets of RMB 1.1 billion and employs 980 staff members. It operates thirteen advanced spiral-seam double-sided submerged-arc welded steel pipe production lines, two three-layer polyolefin coating lines, two internal and external liquid epoxy anti-corrosion lines, and two internal and external epoxy powder anti-corrosion lines. State-of-the-art testing equipment and high-standard physicochemical laboratories provide a reliable guarantee of product quality. Its main products include spiral steel pipes, steel pipes, spiral-welded pipes, spiral-seam double-sided submerged-arc welded steel pipes, and anti-corrosion steel pipes. In addition, our company is also a…