Precision Seamless Steel Tubes Since 2004
+86 51988789990 Sunny@tenjan.com EN
Trusted Since 2004

21 Years of Excellence
in Seamless Steel Tubes

Custom Carbon & Alloy Tubes - Certified to ASTM, EN, DIN & JlS Standards；Custom Precision Tubes-10-108mm (0.39"-4.25") 0uter Diameter,1-20mm (0.04"-0.79")Wall Thickness；Custom Round & Profile Tubes with +0.05mm Precision

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Certified Quality& Reliability

Dual-inspection system
100% Eddy Current &Ultrasonic Tested

Ф0.2mm Defect Detection + Full Traceability

OEMOur Factory
Tenjan Steel Tube:

Precision Tubing Solutions for Demanding Industries

Since 2004, Tenjan Steel Tube has been a vertically integrated manufacturer of precision steel tubing. Specialize in seamless tubes, cold-drawn profiles, cold drawn welded Tube and custom-shaped steel tubes (including square, rectangular, hexagonal, and complex geometries), compliant with ASTM, EN, DIN, and JIS standards.

Our alloy and carbon steel tubes serve critical applications in automotive, high-pressure boilers, construction machinery, hydraulics, and more. With ISO-certified quality control, PMI and NDT inspections, we ensure material integrity. Offering full process control from raw material to finished product, we provide tailored, high-precision tubing for OEMs and engineering projects globally.

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0 Company Founded
0 Annual Capacity
0 Inspection Checkpoints
0 Global Clients
— Product Range

Products Center

Browse our active steel tube catalogue across manufacturing process, shape, material, standards, couplers and cold-drawn profiles.

— Customization Features

For Global Processors & Distributors

From precision specs to global supply, we provide certified Precision Seamless steel tube solutions.

01

Integrated Solutions

Full-process schemes tailored to application; customizable materials, dimensions, mechanical properties, and surface quality.

02

Small-Batch Flexibility

Meeting diverse requirements for small-batch orders ranging from 3 to 500 tons.

03

Alloy Steel Expertise

Partnered with Baosteel and Xingcheng; offering customization for over 100 high-performance alloy grades.

04

Value-Added Processing

Automatic Tube Cutting, Chamfering, OD/ID Turning, Other Downstream Processing Equipment for Seamless Steel Tubes.

— Industry Application

We Serve These Industries And More

Trusted Steel Tube Partner for Global Industries

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Oil & Petrochemical industryMechanical Engineering ComponentsAutomotive & Motorcycle ComponentsMining Construction Support StructuresHigh-Pressure Boiler System
— Qualifications

Our Certificates

Internationally recognized quality systems, product testing and material qualifications support every Tenjan precision tube project.

ISO 9001 Quality Management System Certificate
ISO 9001 Quality Management System Certificate
IATF 16949 Automotive Quality Management System Certificate
IATF 16949 Automotive Quality Management System Certificate
ISO 15835 Certificate
ISO 15835 Certificate
TUV Test Report
TUV Test Report
SGS ROHS Test Report
SGS ROHS Test Report
Production License of Special Equipment of the People's Republic of China
Production License of Special Equipment of the People's Republic of China
CRRC Material Test Report
CRRC Material Test Report
— News & Blog

Stay Informed About the Latest Trends

Technical guidance, material insights and company updates for steel tube buyers and engineers.

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— Partner

Brand Cooperation

Global Trusted Steel Tube Partner

Volkswagen
Tesla
TOYOTA
Volvo
Hyundai
Midea
CRRC
CCTEG
Sinohydro
CNNC
— Talk to Tenjan

Need Precision Steel Tubes?
Contact Tenjan Today.

Contact our sales team for material selection, custom specifications, technical support and a fast quotation for your project.

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