China Steel Tubes | Cetus Precision Tube Co., Ltd.

About Cetus Precision

Cetus Precision Tubes Co., Ltd. is a professional manufacturer and exporter of steel tubes and pipes in China. Established in 1989 with a registered capital of forty-one million US Dollars, we have over 60 professional employees, including more than 10 engineers and technicians.

We specialize in steel pipes and tubes, structural steel tubes, fluid steel pipes, low and medium pressure boiler steel tubes, precision steel pipes, and select stainless steel pipes. Our products meet international standards including API, ASTM, ASME, JIS, DIN, BS, EN, UNI, NFA, GB, and YB.

ISO9001 Certified China Classification Society Approved 300,000 MT Annual Export

Our Product Range

High-precision steel tubes manufactured to international standards for diverse industrial applications including boilers, condensers, evaporators, and structural systems.

Plain Steel Tube

CETUSST021 | Precision welded steel tube for general industrial use.

• Standards: API, ASTM, GB
• Grades: 10#, 20#, Q195-235
• Applications: Structural, Fluid Transport

Double Wall Steel Tube

CETUSST017 | Reinforced dual-layer construction for high-pressure systems.

• Enhanced pressure resistance
• Ideal for boiler applications
• Meets ASME & DIN standards

Outside Copper Coated Tube

CETUSST018 | Corrosion-resistant with copper cladding for heat exchangers.

• Superior thermal conductivity
• Used in condensers & radiators
• Long service life

Zn Coated Steel Tube

CETUSST019 | Galvanized for outdoor and corrosive environments.

• Anti-rust protection
• Suitable for structural frames
• Complies with ASTM A53Gr.B

Zinc Coated Double Wall Tube

CETUSST01702 | Dual protection: structural strength + corrosion resistance.

• Double wall + galvanization
• For high-stress environments
• Pressure vessel compliant

Freezer Zinc Coated Tube

CETUSST020 | Optimized for refrigeration and freezer systems.

• Stable at low temperatures
• Leak-proof joints
• Widely used in HVAC

Spiral Welded Pipe

High-strength longitudinal seam pipe for fluid transmission.

• Large diameter options
• API 5L, X42-X52 grades
• Oil & gas pipeline ready

Alonizing Tube (Alonized)

Surface-treated for extreme heat and oxidation resistance.

• Aluminum diffusion layer
• For high-temp boilers
• Extends tube life 3x

Stainless Steel Tube

Grades: 304, 304L, 316, 316L, 321, 310S

• Corrosion & heat resistant
• Food, medical, chemical use
• Precision dimensional control

Condenser Tube

High thermal efficiency tubes for power and HVAC systems.

• Copper or stainless options
• Smooth inner surface
• Low flow resistance

Evaporator Tube

Designed for phase-change heat transfer applications.

• Uniform wall thickness
• High burst pressure rating
• Compatible with refrigerants

Welding Machines

CWM004 & CWM003 Table Spot Welders for tube production.

• High-frequency inverter tech
• Stable current output
• For precision seam welding

Why Choose Cetus Precision?

Decades of engineering excellence, global compliance, and customer-focused manufacturing.

Quality Assurance

ISO9001 certified with rigorous testing. Approved by China Classification Society and State Quality Technical Supervise Bureau for boiler and pressure vessel applications.

Global Export

Over 300,000 metric tons exported annually to USA, Canada, Germany, UK, Korea, Singapore, Thailand, Indonesia, Middle East, and Southeast Asia.

Technical Expertise

10+ engineers and technicians. Over 60 skilled staff. 35+ years of experience in steel tube manufacturing and export.

Frequently Asked Questions

What is a welding steel tube?

A welding steel tube is formed by rolling a steel strip or plate into a cylindrical shape and welding the seam. It offers high strength, uniform dimensions, and cost-efficiency for structural, mechanical, and fluid applications.

How to calculate the weight of a steel tube?

The weight (kg/m) can be calculated using: (OD - WT) × WT × 0.02466, where OD is outer diameter in mm and WT is wall thickness in mm. For precise calculations, we provide weight charts per standard.

What standards do your tubes comply with?

Our products meet API, ASTM, ASME, JIS, DIN, BS, EN, UNI, NFA, GB, and YB standards. We can manufacture to customer-specified technical requirements.

What are the common steel grades you produce?

Carbon steels: 10#, 20#, 35#, 45#, Q195-235, API 5L Gr.B, A106 Gr.B. Alloy steels: 20CrMo, 40Mn2. Stainless steels: 304, 304L, 316, 316L, 321, 310S.

Do you offer custom sizes and coatings?

Yes, we provide OEM services including custom OD, WT, length, end finishes, and surface treatments such as galvanizing, alonizing, and copper cladding.

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Precision Steel Tubes from China