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Leading Precision Seamless Steel Tube Manufacturer Since 2004

With over 20 years of expertise, Dingxin delivers high-performance seamless steel tubes for automotive, hydraulic, mining, drilling, and precision engineering applications. ISO9001 & IATF 16949 certified with exports to 24+ countries.

Dingxin Manufacturing Facility

About Dingxin Steel Tube

Dingxin is a leading manufacturer of precision seamless steel tubes with over two decades of experience in advanced tube production. Our modern facilities in Haiyan, Zhejiang Province are equipped with state-of-the-art production and testing equipment, ensuring the highest standards in every product we deliver.

We specialize in tailor-made tube solutions for demanding industrial applications, combining extensive technical know-how with a fully integrated in-house manufacturing process. Our commitment to quality has earned us ISO9001 and IATF 16949 certifications, making us a trusted partner for clients across Europe, North America, South America, Australia, and Southeast Asia.

20+
Years Manufacturing Experience
30,000+
Tons Annual Production Capacity
20+
Quality Assurance Processes
24+
Exporting Countries & Regions

Why Choose Dingxin?

We combine decades of expertise with cutting-edge technology to deliver seamless steel tubes that exceed industry standards.

Quality Assurance

We produce according to the highest industry standards, controlling every aspect of the production phase with 20+ quality checks.

Professional Service

Our team provides tailor-made tube solutions to meet or exceed our customers' specific requirements and applications.

Competitive Pricing

Our complete in-house manufacturing process allows us to maintain competitive pricing without compromising on quality.

Just-in-Time Delivery

Our integrated production system ensures high flexibility and efficiency, enabling reliable on-time delivery worldwide.

Our Main Products

Precision seamless steel tubes engineered for performance and reliability across industries.

1541 Seamless Steel Tube

1541 Seamless Steel Tube

  • Material: SAE 1541
  • Standard: ASTM A519
  • Application: High-strength mechanical components
  • Processing: Cold drawn, precision finished
1026 Seamless Tubing

1026 Seamless Tubing

  • Material: ASTM A519 1026
  • Processing: Cold drawn, honed options
  • Application: Hydraulic systems, machinery
  • High tensile strength and durability
Hydraulic Cylinder Tube

ASTM A519 1026 Hydraulic Cylinder Tube

  • Material: 1026 Carbon Steel
  • Surface: Honed, ground, polished
  • Application: Hydraulic cylinders
  • High precision dimensional control
Mechanical Tubing

ASTM A519 SAE AISI 1010-1045-1541

  • Materials: 1010, 1020, 1026, 1045, 1541
  • Processing: Cold drawn seamless
  • Versatile mechanical applications
  • Precision dimensional accuracy
4130 4140 QT Tubing

ASTM A519 SAE AISI 4130 4140 QT

  • Material: 4130, 4140 (Quenched & Tempered)
  • High strength-to-weight ratio
  • Application: Aerospace, automotive
  • Excellent fatigue resistance
Motorcycle Fork Tube

Motorcycle Front Fork Tube SAE 1536 1541

  • Material: SAE 1536, 1541
  • Application: Motorcycle suspension
  • Precision honed inner surface
  • High wear and fatigue resistance
EN 10305-1 Tube

EN 10305-1 E215 E235 E355 +C+SR+A+N

  • Standard: EN 10305-1
  • Grades: E215, E235, E355
  • Condition: +C, +SR, +A, +N
  • Cold drawn seamless precision tube
Automotive Steel Tube

EN10083-3 34CrMo4 42CrMo4 +C +QT

  • Material: 34CrMo4, 42CrMo4
  • Condition: Cold drawn, Quenched & Tempered
  • Application: Automotive components
  • High strength and toughness
JIS G 3445 Tube

JIS G 3445 STKM 11A-14B Tube

  • Standard: JIS G 3445
  • Grades: STKM 11A, 12B, 13C, 14B
  • Application: Automotive frames, structures
  • Weldable, formable carbon steel tube
DIN 2391 Tube

DIN 2391 ST35 ST45 ST52 Precision Tube

  • Standard: DIN 2391
  • Grades: ST35, ST45, ST52
  • Conditions: BK, BKW, BKS, GBK, NBK
  • High precision dimensional tolerance

Our Manufacturing Excellence

Integrated processes ensuring consistent quality and performance.

Fully Integrated Production

From raw material sourcing to final inspection, every step is controlled in-house for maximum quality assurance and efficiency.

Certified Quality Systems

ISO9001 and IATF 16949 certified, ensuring compliance with international quality standards for automotive and industrial applications.

Global Export Network

Products exported to over 24 countries across Europe, North America, South America, Australia, and Southeast Asia.

20+
Years in Business
30,000+
Tons Annual Capacity
20+
Quality Processes
24+
Countries Served

Frequently Asked Questions

What materials do you specialize in?

We specialize in carbon and alloy steels including SAE 1010, 1020, 1026, 1045, 1541, 4130, 4140, 34CrMo4, and 42CrMo4, meeting ASTM, DIN, EN, and JIS standards.

What are your main product applications?

Our tubes are used in automotive systems, hydraulic cylinders, mining and drilling equipment, motorcycle suspension components, and precision machinery.

Do you offer custom solutions?

Yes, we provide tailor-made tube solutions with customized dimensions, materials, and processing to meet specific customer requirements.

What quality certifications do you hold?

We are certified to ISO9001 and IATF 16949 standards, ensuring our quality management systems meet international requirements for automotive and industrial applications.

Get in Touch

Have questions about our precision seamless steel tubes? We're here to help.

For inquiries about our products, custom solutions, or technical specifications, please visit our official website to contact our sales team.

Visit Official Website to Contact

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