Tengfei Special Materials Technology

About Tengfei

Changzhou Tengyue Special Materials Technology Co., Ltd, formerly known as Changzhou Tengyue Stainless Steel Pipe Co., Ltd, is one of the leading manufacturers of seamless stainless steel tubes and pipes in China.

With over 30 years of operational excellence and the trust of more than 500 partners, our products are now applied across more than 50 global markets. We specialize in high-precision tubing for critical applications in power generation, petrochemicals, pharmaceuticals, and industrial engineering.

Our commitment to innovation has led to long-term collaborations with Changzhou University and the Metal Institute. We actively participate in national science and technology projects and hold 25 national authorized patents, including key inventions in heat transfer tube manufacturing.

Explore Our Products

Advanced Technologies

Ultrasonic Testing

Non-destructive evaluation for internal flaws and wall thickness consistency.

Cold Rolling Mill

Precision high-speed cold rolling for superior dimensional accuracy and surface finish.

Continuous Heat Treatment

Controlled atmosphere furnaces for optimal microstructure and mechanical properties.

Pickling & Passivation

Surface treatment for enhanced corrosion resistance and cleanliness.

Eddy Current Testing

High-speed inspection for surface defects and conductivity verification.

Chemical Analysis

Direct reading spectrometry and micro-analysis for precise alloy composition.

Our Products

Stainless Steel Heat Exchanger Tube

High thermal conductivity tubes for efficient heat transfer in industrial systems.

• OD: 6.0–219.0mm
• WT: 1.0–22.0mm
• Materials: Austenitic, Duplex, Nickel Alloys
• Standards: GB, ASTM

U Bend Tube

Precision-formed U-shaped tubes for shell and tube heat exchangers.

• Seamless construction
• High-pressure resistance
• Custom bend radii available
• Full NDT inspection

Super Duplex Steel Pipe

High-strength, corrosion-resistant pipes for aggressive environments.

• Excellent chloride resistance
• High mechanical strength
• Ideal for offshore applications
• PED & ISO9001 certified

Stainless Steel BA Tube

Bright Annealed tubes with superior surface finish for hygienic applications.

• Cold worked & annealed
• Mirror-like surface
• Low roughness (Ra ≤ 0.4μm)
• Used in semiconductor & pharma

316L Seamless Mechanical Tube

High-purity 316L seamless tubing for structural and mechanical uses.

• Low carbon content
• Excellent weldability
• Corrosion resistant
• Precision dimensional control

Stainless Steel Sanitary Tube

Electropolished (EP) and BA tubes for food, beverage, and pharmaceutical industries.

• Hygienic surface finish
• Easy to clean and sterilize
• Meets FDA & 3A standards
• Zero particle shedding

Nickel Based Alloy Pipe

High-performance alloys for extreme temperature and corrosive environments.

• Inconel, Hastelloy, Monel
• Oxidation & sulfidation resistant
• Used in chemical processing
• Full traceability

Stainless Steel Boiler Tube

High-pressure tubes for water tube boilers and heat recovery systems.

• Seamless construction
• High thermal fatigue resistance
• Suitable for superheaters
• Full hydrostatic testing

Stainless Steel Fluid Pipe

Reliable fluid transport pipes for oil, gas, and chemical transfer.

• 304 / 316 / 316L options
• Leak-tight integrity
• Long service life
• Custom lengths up to 25m

Industrial Applications

Chemical Industry

Corrosion-resistant tubing for reactors, condensers, and process lines.

Petroleum Pipeline

High-integrity pipes for offshore platforms and refineries.

Power Station

Boiler tubes, superheaters, and heat exchangers for thermal plants.

Health Industry

Sanitary and EP tubes for pharmaceutical and biotech applications.

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