Tenjan has succeeded in producing seamless tube from free-cutting steel. Its high sulphur concentration offers advantages in machining operations such as turning, milling or drilling, with better chip formation and longer tool life. Free cutting steel tubes are guaranteed lead-free to protect the environment.

Seamless precision tubes are produced using the cold drawn process. It can be supplied as cut tubes and bent tubes. Cut tubes are designed especially for manufacturers of automotive components.Precision steel tubes from our production satisfy the requirements for the following applications: components for the vehicle drivetrain, cars and motorcycle suspension systems, components for body and chassis, vehicle control systems and others.

Chrome-molybdenum steel pipe, Manganese titanium steel pipe and other Alloy steel pipes, exported overseas for more than 10 years with experience. 30crmo, 25crmo4, 20crmnti, 16mncr5, 40mn2, 34mnb5, 4140 and other alloy steels offered. Ask and get a quote now!

--Precise custom outer diameter and inner diameter --Tight tolerances, resulting in reduced machine time / Dimensional accuracy --Smooth and Clean OD and ID surfaces --Excellent machining characteristics --Wider range of physical properties attainable through process and annealing options

Seamless steel pipes used for auto parts. Sizes, shapes, machenical properties(tensile strength, yield, elognation) can be customized.

ASTM A179 heat exchanger tubes A 179 Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes This specification covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. This specification covers tubes 1/8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter.

--Precise custom outer diameter and inner diameter
--Tight tolerances, resulting in reduced machine time / Dimensional accuracy
--Smooth and Clean OD and ID surfaces
--Excellent machining characteristics
--Wider range of physical properties attainable through process and annealing options

Quenching and tempering consists of a two-stage heat-treatment process. Stage one includes hardening, in which the steel is austenitized to approximately 900°C and then quickly cooled with water or oil. Stage two consists of tempering the material to obtain the desired material properties. Quenching and tempering achieves a fine-grained and homogeneous microstructure. Quenched and tempered steel is characterized by high strength and good ductility.