Welded Pipe

ChengduShushengtai Steel Co., Ltd. is a leading domestic manufacturer and supplier of steel pipes, specializing in the production and distribution of welded pipes, line pipes, galvanized steel pipes, square tubes, and other customized metal products. Our welded pipes offer excellent weld strength, dimensional accuracy, and corrosion resistance, making them suitable for applications in construction, fluid transportation, machinery, and structural engineering.

Spiral Submerged Welded Steel Pipe
Application: water engineering, chemical industry, electric power, petrochemical and other industries. OD :14 "to 100"
Length: random length, fixed length 6 meters,...
Wall thickness...
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Typical Application Fields of Welded Pipe

Oil and Gas Transportation
Welded steel pipes are extensively used for transporting oil, natural gas, and petroleum products. Their high strength and reliable weld integrity ensure safe and efficient long-distance transmission.

Water Supply and Drainage Systems
These pipes are widely applied in municipal water supply, drainage, and sewage systems, offering durability, corrosion resistance, and cost-effective installation.

Structural and Construction Projects

Welded pipes serve as load-bearing components in construction, such as building frameworks, bridges, supports, and scaffolding, providing stability and mechanical strength.

Automotive and Mechanical Engineering

In the automotive and machinery sectors, welded pipes are used for mechanical tubing, exhaust systems, and industrial equipment, valued for their precision and consistent performance.

Agricultural and Irrigation Applications

Welded pipes are also utilized in irrigation networks and agricultural infrastructure, where strength and corrosion resistance are critical for long-term reliability.

Welded Pipe Standards

Standard	Description
API 5L	Used for oil, gas, and water transmission pipelines, ensuring high strength and pressure reliability.
ASTM A312 / A358	Specifies stainless steel welded pipes for high-temperature and corrosion-resistant applications.
ASTM A53 / A252	Covers carbon steel welded pipes for mechanical, structural, and pressure service.
EN 10217 / EN 10219	Defines welded steel tubes for pressure and structural use, widely applied in construction and industrial systems.

Surface Treatment Processes for Welded Pipe

Cleaning and Surface Preparation
Welded pipes are meticulously cleaned through degreasing and shot blasting to eliminate oils, rust, and welding residues, ensuring a contaminant-free surface.

Pickling and Passivation
To remove scale and oxide layers from welding zones, pickling acids are applied, followed by passivation to stabilize the surface and improve corrosion resistance.

Coating Application
Depending on project requirements, pipes receive protective coatings such as epoxy, polyethylene (PE), or polyurethane (PU) to guard against environmental damage and chemical corrosion.

Galvanizing
Hot-dip galvanizing can be applied for additional corrosion protection, especially in outdoor or harsh environments.

Customized Options for Welded Pipe

Material grades

Carbon steel, stainless steel, alloy steel, and more.

Outer diameter

14 inches to 100 inches

Wall thickness

5.0mm ~ 25mm

Length

Random length, fixed length 6 meters

Surface treatment

Galvanizing, pickling, anti-corrosion coatings, and more.

Packaging & Shipping

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Our factory

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Certification

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FAQ

Q: What are some uses for welded pipe?

A: Ideal for transporting water and gas in residential, industrial, and agricultural settings. Welded pipes are often used in the construction of scaffolding, handrails, guardrails, and as part of building infrastructure.

Q: Can you customize welded pipes according to specific requirements?

A: Yes, we offer extensive customization in material grade, dimensions, wall thickness, and surface treatments to ensure products precisely fit your application.

Q: What is the minimum order quantity (MOQ)?

A: The MOQ varies depending on the steel pipe specifications and customization. Typically, we accommodate both bulk orders and smaller trial quantities to support diverse customer needs.

Q: Is after-sales support available?

A: Our team provides responsive after-sales service, including technical support and assistance, to guarantee customer satisfaction throughout the product lifecycle.

Q: Which payment methods are accepted?

A: We accept various payment options, including T/T (Telegraphic Transfer), L/C (Letter of Credit), and other secure methods tailored to client preferences.

As one of the leading welded pipe manufacturers and suppliers in China, our company is specialized in providing the best products and service for customers around the world. Please rest assured to buy high quality welded pipe made in China here from our factory.

Seamless 316 Stainless Steel Tubing, Spiral Submerged Welded Steel Pipe, welded pipe