Welcome to Changzhou Tenjan Steel Tube Co., Ltd
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At Tenjan, we specialize in manufacturing JIS G3461 seamless steel tubes that set the benchmark for boiler and heat exchanger applications.
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At Tenjan, we specialize in manufacturing JIS G3441 alloy steel seamless tubes that meet the rigorous Japanese Industrial Standards for mechanical structural applications.
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S235JR Seamless Steel Tubes represent European EN standard carbon structural steel tubular products designed for general structural applications and fluid transportation.
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Our Lemon Pipe Type Triangle Steel Tube is a specialized Seamless Triangular Steel Pipe engineered for high-performance agricultural applications.
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Our Double Finned Tubes represent high-efficiency Cold-Drawn Hollow Special Steel Pipes engineered for superior thermal performance in demanding applications.
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Triangular Steel Pipes represent our innovative line of three-sided seamless tubes featuring precision equilateral triangular cross-sections.
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JIS G3445 seamless steel tubes represent the Japanese Industrial Standard for carbon steel tubes specifically designed for machine structural purposes.
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DIN 17175 seamless steel tubes represent the German standard for heat-resistant seamless steel tubes designed specifically for elevated temperature service conditions. These precision-engineered tubes are manufactured to withstand demanding high-temperature environments while maintaining structural integrity and performance reliability. As specialists in cold-drawn manufacturing processes, Tenjan produces DIN 17175 tubes that deliver exceptional dimensional accuracy and surface quality for critical high-temperature applications across various industrial sectors.
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St37 Seamless Steel Tubes represent German DIN standard carbon structural steel products with carbon content controlled between 0.17%-0.20%.
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IN 2391 precision seamless steel tubes represent the benchmark for cold-drawn precision tubing under the German standardization system.
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STKM13A Seamless Steel Tubes represent Japanese JIS standard low-carbon steel tubular products with carbon content controlled between 0.18%-0.24%.
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Oval Steel Pipes and Elliptical Steel Tubes represent our specialized line of seamless oval-shaped sections engineered for applications requiring space-optimized profiles and enhanced structural performance.
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