Precision cold drawn tube

Seamless precision steel tubes are some of our core products – not least because of having one of the leading manufacturers of seamless precision steel tubes.

Precision cold drawn seamless steel tube

Precision Cold drawn shapes mean the product that has complicating geometry manugactured by drawing process under temperature.

Production standards

Our customers benefit from high quality products and extensive material and processing expertise.

DIN 2391

DIN 2391 standard specifies the Seamless steel tubes used forMechanical and Automobile.

EN10305

EN 10305 european standard specifies the technical delivery conditions for seamless cold drawn steel pipe...

DIN 17175-79 Seamless steel tubes

DIN17175

DIN 17175 steel pipes are used in boiler installations, high-pressure pipelines and tank construction and special machinery

Precision cut lengths

The automotive and automotive components supplier industries represent the significant area of use for precision cut lengths, they could also be used in the domestic appliance industry and mechanical engineering.

The length of the pipe cut according to the requirement. Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.

General process of cold drawing

A considerable proportion of the seamless tubes and pipes manufactured through the cold roll piercing technology undergo subsequent cold forming.

Workshop
Precision cold drawn steel tube production processPrecision cold drawn steel tube production process
Precision cold drawn seamless steel tube
steel tube size measurment out diameter

The principal reasons behind cold drawing are:

Cold drawn seamless steel tube process

Cold drawn steel tube is with hot-rolled steel coil as raw material, and tandem cold rolling pickled to remove oxide scale, its finished rolling hard roll, rolling hard volumes due to the continuous cold deformation caused by cold hardening strength, hardness increased indicators declined tough plastic, stamping performance will deteriorate, which can only be used for simple deformation of the parts.

Cold formed steel

Cold-formed steel refers to the use plates or strip bent in a cold state of the various cross-sectional shape of the finished steel. Cold-formed steel is an economical lightweight thin-walled steel cross-section, also called cold-formed steel profiles. Bending section steel is the main material of light steel structure. It has a hot rolling can produce all kinds of thin, reasonable shape and complex cross section.

Hot forging and cold forging

Hot forging means forging blank metal above the recrystallization temperature carried out.

Cold forming performance

Cold forming is not performed in the case of heating the material for punching, bending, stretching and other processing methods. Cold forming processes are cold heading, cold rolled, forging and so on.

The advantages of cold-rolled tube

Cold-rolled tube refers to steel product that is through cold drawing, cold-formed, cold drawn, cold plate or strip processed at room temperature.

Annealing and quenching of cold drawn steel

The annealing of cold drawn steel is commonly used in the production of preliminary heat treatment process. The annealing of cold drawn steel is commonly used in the production of preliminary heat treatment process.

Application of ASTM A179 Cold Drawn Seamless Tubes

ASTM A179 cold drawn seamless carbon steel pipe is mainly used in various sectors of the metal structure facilities, mainly after the rust of steel pieces immersed in 440 - 460 ℃ melting zinc solution, so that the steel surface attached to the zinc layer, which play a preservative purpose.

Weld cold crack

Welded joints cooled to a lower temperature ( for steel, in the martensitic transformation start temperature Ms less ) generated by the weld cracking.



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


SUNNY STEEL

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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