Welcome to Changzhou Tenjan Steel Tube Co., Ltd

GB/T3087 Steel Pipe

As a specialized seamless steel tube manufacturer with over two decades of expertise, Tenjan produces GB/T 3087 seamless steel tubes that meet China's national standard for low and medium pressure boiler applications while ensuring full compatibility with international specifications.

GB/T3639 Steel Pipe

As an established seamless steel tube manufacturer with 21 years of specialized experience, Tenjan produces GB/T 3639 precision seamless steel tubes that represent the pinnacle of cold-drawn and cold-rolled manufacturing technology. Our precision cold-finished tubes are engineered for applications demanding exceptional dimensional accuracy, superior surface quality, and consistent mechanical properties, serving global clients in hydraulic systems, precision machinery, and automotive manufacturing with cost-effective solutions that rival international standards in quality and performance.

GB/T8163 Steel Pipe

As a specialized seamless steel tube manufacturer with 21 years of technical expertise, Tenjan produces GB/T 8163 seamless steel tubes that meet China's national standard for fluid conveyance applications while maintaining full compatibility with international specifications. Our fluid conveyance seamless tubes are engineered for reliable performance in transporting water, oil, gas, and steam under medium to low-pressure conditions, offering global clients a cost-effective solution without compromising quality or safety requirements.

GB/T8162 Steel Pipe

As a leading seamless steel tube manufacturer with over two decades of expertise, Tenjan produces GB/T 8162 seamless steel tubes that meet China's national standard for structural applications while maintaining full compatibility with major international specifications. Our structural seamless tubes are engineered to deliver reliable performance in construction frameworks, mechanical components, and industrial structures, offering global clients a cost-effective alternative without compromising quality or technical requirements.

8620 Alloy Pipe

8620 Alloy Seamless Steel Tubes represent American SAE standard low-carbon nickel-chromium-molybdenum alloy steel tubes engineered for carburizing applications requiring exceptional surface wear resistance combined with core toughness.

16MnCr5 Steel Pipe

16MnCr5 Alloy Seamless Steel Tubes represent German DIN standard manganese-chromium alloyed structural steel products engineered for high hardenability and exceptional wear resistance in precision mechanical applications.

34MnB5 Alloy Pipe

34MnB5 Alloy Seamless Steel Tubes represent German DIN standard manganese-boron alloyed structural steel products engineered for high strength and excellent hardenability at competitive cost levels.

5140 Steel Pipe

5140 Alloy Seamless Steel Tubes represent American ASTM standard chromium-alloyed structural steel products engineered for medium-to-high strength and anti-fatigue applications.

5120 Alloy Pipe

5120 Alloy Seamless Steel Tubes represent American ASTM/SAE standard low-carbon chromium-alloyed structural steel products engineered for case hardening applications requiring balanced strength, processability, and cost-effectiveness.

EN 10297-1 Steel Pipe

At Tenjan, we transform the European standard EN 10297-1 into tailored seamless steel tube solutions that precisely match your mechanical application requirements.

EN10305-1 Steel Pipe

At Tenjan, we specialize in manufacturing EN 10305-1 precision steel tubes that meet the rigorous European standard for cold-drawn seamless tubing.

41Cr4 Alloy Pipe