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Premium Seamless Steel Tubes from China

High-integrity manufacturer since 1997. ISO-certified, precision-engineered seamless carbon, alloy, and hydraulic steel tubing for global industrial applications.

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Trusted Manufacturer Since 1997

Jiangsu Huacheng Industry Group Co., Ltd. is a leading private enterprise founded in 1997 and ranked among the top 50 industrial enterprises in Zhangjiagang City. With a registered capital of 109.2 million RMB, we specialize in the production of high-quality seamless steel tubes for mechanical, hydraulic, energy, and construction industries.

Our commitment to innovation, strict quality control, and fast delivery has earned us long-term partnerships with global clients across Europe, the Middle East, and Asia.

  • ISO & API Certified Manufacturing
  • 25+ Years of Industry Experience
  • Global Export to 50+ Countries
Steel Tube Manufacturing

Our Top Products

Engineered to meet international standards: ASTM, DIN, EN, JIS, GB

EN10305-1 E235C Precision Tube

EN10305-1 E235C Precision Carbon Tube

Small diameter 6mm, industrial-grade seamless tubing for precision applications.

  • Standard: EN10305-1
  • Material: E235C, C35E
  • Diameter: 6mm and above
API St52 Hot Rolled Tube

API St52 Hot Rolled Steel Tube

Gas cylinder and construction-grade tubing with beveled or plain ends.

  • Standard: API 5L, DIN1629, DIN2448
  • Material: St52, Q345
  • Application: Construction, Gas Cylinders
Thick Wall Seamless Tube

Seamless Thick Wall Steel Tube

Mechanical-grade tubing for high-pressure environments.

  • Standard: DIN1629 / DIN2448
  • Material: St52, Q345
  • Application: Mechanical Systems
ASTM A213 Alloy Steel Tube

ASTM A213 T5-T91 Alloy Steel Tube

Cold-drawn heat-exchanger tubes for industrial use.

  • Grades: T5, T9, T11, T12, T22, T23, T91
  • Thickness: 2.11mm – 30mm
  • Surface: Bare, Precision Finish
DIN 17230 Bearing Tube

DIN 17230 100Cr6 Bearing Steel Tube

Stainless seamless bearing tube meeting ASTM, GB, DIN, JIS standards.

  • Standard: DIN 17230, ASTM A295
  • Material: 100Cr6, SAE 51100
  • Application: Machinery, Bearings
Hydraulic Cylinder Pipe

EN10305-4 Hydraulic Seamless Tube

High-pressure hydraulic cylinder tubing with precision tolerance.

  • Standard: EN10305-4, ASTM
  • Material: E215, E235, ST52
  • Diameter: 3mm – 50mm
Drilling Steel Pipe

STM-R780 Thin Wall Drilling Pipe

Gas cylinder and drilling applications with ultra-thin walls.

  • Thickness: 0.8mm – 15mm
  • Application: Drilling, Gas Cylinders
  • High Strength-to-Weight Ratio
Rectangular Steel Tube

Thick Wall Rectangular Steel Tube

Structural square and rectangular tubing for building frameworks.

  • Shape: Square, Rectangular
  • Application: Building Structures
  • Welded or Seamless Options
View All 53+ Products

1997

Founded

50+

Countries Served

25+

Years Experience

500+

Global Clients

Why Choose Huacheng?

  • ✓ Fast Delivery: Streamlined logistics ensure on-time shipment worldwide.
  • ✓ Precision Engineering: Tight tolerances and consistent wall thickness.
  • ✓ Global Standards: Full compliance with ASTM, DIN, EN, JIS, and API.
  • ✓ Customer Trust: Long-term partnerships with Fortune 500 companies.
Factory Equipment

Trusted by Global Leaders

"Huacheng is a high-integrity enterprise. That's why our top management has trusted Huacheng since 2006. Huacheng helps us win the markets!"

— Europen Tube Co Ltd

"Thanks to HC Pipe's fast delivery time and good quality, we won this very important project and gained deep trust from our clients."

— Ormat Israel

"When you choose your partners, you increase the likelihood of success. That’s why we choose Huacheng."

— Foster Wheeler

Quality Inspection

Rigorous Quality Control

Every seamless steel tube undergoes comprehensive testing including ultrasonic inspection, hydrostatic testing, dimensional checks, and chemical analysis to ensure compliance with international standards.

  • • 100% Non-Destructive Testing (NDT)
  • • Material Certification (MTC) Provided
  • • Batch Traceability & Quality Documentation
  • • In-House Lab & Skilled Technicians

Get in Touch

For product inquiries, quotes, or technical support, visit the official website to connect with the Huacheng team.

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