Threeway Steel | Premium Steel Pipes & Tubes Manufacturer & Exporter

About Threeway Steel

A world-class production and service provider with 32 years of expertise in steel pipe manufacturing, stocking, and exporting.

Global Leader in Steel Pipe Solutions

Threeway Steel Co., Ltd. is a trusted name in the global steel industry, delivering high-quality welded, seamless, and structural steel pipes for critical applications across energy, infrastructure, and industrial sectors.

Our integrated manufacturing system includes 8 world-class submerged arc straight seam welded pipe production lines, advanced hot-rolling and cold-forming capabilities, heat treatment, threading, finishing, and extensive warehousing in China. Our R&D network continuously enhances our product portfolio and strengthens our industry operation capability, quality competitiveness, and cost control.

32 Years of Industry Experience
8 Advanced Production Lines
Global Export Network
ISO & API Certified Quality

Our Product Range

Comprehensive portfolio of steel pipes and tubes meeting international standards for diverse industrial applications.

Stainless Steel Square Tube

Grade 304L, 316L | ASTM A554 | Precision welded for architectural and structural use

Stainless Steel Rectangular Tube

304/316 | ASTM A554 | Corrosion-resistant for harsh environments

Mild Steel Square Tube

ASTM A500 | Q235 | Hot-dipped galvanized options available

Mild Steel Rectangular Tube

ASTM A500 | EN 10219 | Structural grade for construction

API 5L Pipe

Line pipe for oil & gas transmission | Grades B, X42-X70

ASTM A106 Pipe

Seamless carbon steel pipe for high-temp service | Grade B

API Casing

API 5CT | J55, K55, N80, P110 | For oil & gas well construction

API Tubing

API 5CT | Production tubing for oil & gas extraction

Cold Drawn Seamless Tube

ASTM A519 | Precision tubes for mechanical and hydraulic systems

Hot Expanded Seamless Pipe

ASTM A106, A53 | Large diameter seamless pipe solutions

Steel Sheet Pile

U-type, Z-type | For retaining walls and cofferdams

Aluminum Pipe

6061, 6063 | SCH40 | Lightweight corrosion-resistant solution

Why Choose Threeway Steel

Excellence in manufacturing, quality assurance, and customer service sets us apart in the global steel market.

32 Years Experience

Trusted by global clients with decades of proven performance in steel pipe manufacturing.

API & ISO Certified

Compliant with API 5L, API 5CT, ASTM, EN, and other international standards.

Global Export

Serving clients across Middle East, Africa, Americas, Europe, and Asia-Pacific.

Custom Coatings

Epoxy, polyurethane, PE, FBE, and heavy anti-corrosion coating options available.

Frequently Asked Questions

What standards do your steel pipes meet?

Our products comply with API 5L, API 5CT, ASTM A53, A106, A252, A500, EN 10219, EN 10025, GOST, and other international standards depending on product type.

Do you offer custom coating services?

Yes, we provide various coating options including epoxy, polyurethane, FBE, PE, PP, phenolic resin, and heavy anti-corrosion coatings based on project requirements.

What is your production capacity?

With 8 advanced production lines and integrated facilities, we produce over 10 million tons of steel pipes annually to meet large-scale project demands.

How do you ensure product quality?

We implement strict quality control throughout manufacturing, including raw material inspection, in-process testing, final inspection, and full traceability documentation. We hold API and ISO certifications.

Can you manufacture to custom specifications?

Yes, we offer OEM services and can produce pipes to custom dimensions, grades, coatings, and packaging requirements based on technical drawings and project needs.

Latest News & Insights

December 16, 2025

Overview of the Construction Process of Industrial Steel Pipe Piles

The purpose of steel pipe pile construction is to transfer the load of the superstructure to deeper, stronger soil layers or to compact weak soil layers to improve the bearing capacity and density of the foundation soil. Therefore, it is crucial to ensure the quality of steel pipe pile construction.

December 15, 2025

Why Do Stainless Steel Pipes Undergo Solution Annealing?

Austenitic stainless steel is softened through solution treatment. Generally, the stainless steel pipe is heated to approximately 950–1150℃ and held at that temperature for a period of time. This allows carbides and various alloying elements to fully and uniformly dissolve in the austenite.

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