Welcome to Changzhou Tenjan Steel Tube Co., Ltd

Cold finished（hard）Pipe&Tube

Cold Finished (hard) Steel Pipes (BK/+C) represent a delivery state where steel tubes undergo cold forming processes without subsequent heat treatment. These hard-condition seamless tubes maintain their as-cold-worked properties, featuring high strength and precise dimensional characteristics that make them suitable for applications requiring rigid components without complex secondary forming operations.

Cold-Drawn Alloy Section Steel&Bar

◆ Tailored Solutions for Your Needs
Tenjan deeply analyzes your application scenarios, leveraging mature steel tube production techniques and 30+ years of expertise.

Cold finished（Soft）Pipe&Tube

Cold Finished(Soft) Steel Pipes (BKW/+LC n) represent a specialized delivery state where steel tubes undergo cold forming followed by low-temperature stress relief annealing. These soft-condition seamless tubes balance the high precision of cold working with the improved plasticity from stress relief treatment, positioning them between hard condition (BK) and fully annealed (GBK) tubes in terms of mechanical properties and processability.

Cold-Drawn Carbon Section Steel&Bar

Cold finished and stress-relieved Pipe&Tube

Cold Finished and Stress-Relieved Steel Pipes (BKS/+SR Condition) represent a precision delivery state where steel tubes undergo specialized stress relief annealing after cold forming processes.

Cold-Drawn Welded Tube

Tenjan delivers fully customizable cold-drawn welded tubes in both standard round and specialized profiles. Our engineered solutions adapt to your exact application requirements.

Rebar Coupler

◆ Tenjan's Rebar Couplers feature national-standard quality, compliant with JG/T163 and other international norms like ACI318, JGJ107, UBC 1997,BS8110, NF35-20-1,DIN1045, and ISO 15835.

Cold-Rolled Welded Tube

Tenjan delivers fully customizable Cold-Rolled welded tubes in both standard round and specialized profiles. Our engineered solutions adapt to your exact application requirements.

Rolling Straight Thread Rebar Coupler

The Rolling Straight Thread Rebar Coupler System stands as the industry benchmark for high strength coupler applications. This rebar splices and coupler system is engineered to deliver unmatched performance in structural reinforcement splicing. As a leading manufacturer, Tenjan provides this position rebar coupler solution designed for simple, precise, and robust installations.

Bolted Rebar Coupler

The Bolted Rebar Coupler System is a mechanical rebar splicing solution designed to replace traditional methods like welding or lap splicing. Its core function is to create a seamless, end-to-end connection between two reinforcing bars using a high-strength steel sleeve with internal threads and locking bolts.

11SMn30 Steel Pipe

11SMn30 Free-Cutting Steel Seamless Tubes represent a specialized category of high-sulfur phosphorus composite free-cutting steel tubes engineered specifically for high-efficiency machining applications.

Y15 Steel Pipe

Y15 Free-Cutting Steel Seamless Tubes represent China's GB standard high-sulfur phosphorus composite free-cutting steel tubes specifically engineered for high-volume precision machining applications.