Seamless tube, Seamless pipes, Cold drawn seamless tube, Hot rolled steel pipe
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Seamless steel pipes

Seamless steel pipes / tubes

We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanica...

+ Big Out diameter seamless pipes

Structure engineering

+ Seamless Pipes by applications

Carbon Steel Seamless Pipes

+ Carbon Steel Pipes

Hot rolled seamless steel pipe

+ Hot rolled seamless steel pipe

Precision cold drawn tube

+ Precision cold drawn tube

Galvanized Seamless tube

+ Galvanized Seamless tube

Please view the recommended seamless pipes and tubes as below

Heat exchange tubes
Boiler pipes
Heat exchange tubes are intended for heating or cooling process fluids, they are for example suitable for closed circuit cooling of electrical equipment using demineralised water and for cooling water soluble oil solutions in quenching tanks.
U-bend or U-shape tubes
Tubes for Fluid Transportation Service
These U bend tubes can be custom designed in various diameters as per the requirements of our clients.
ASTM A213 T5b tubes
ASTM A213 T5b Seamless alloy tube
ASTM A213 T5b Standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes.
Seamless Precision tubes
Seamless Precision steel tubesSeamless Precision Steel Tubes according to EN 10305-1
20G seamless pipes
20G seamless steel pipe for boiler
20G seamless steel pipe is a high-quality carbon structural steel, boiler material
ASTM A335 P22 alloy steel pipe
ASTM A335 P22 alloy steel pipe
ASTM A335 P22 alloy steel pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
Hot rolled seamless pipe
Hot rolled seamless steel pipe
Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing.
ASTM A179 Heat Exchanger Tubes

ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes.



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.
How to calculate a steel pipe and tube theoretic weight
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.
 
Condition on delivery:
Term Symbol Explanation
Cold-finished/hard
(cold-finished as-drawn)
BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft
(lightly cold-worked)
BKW After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed GBK After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized NBK The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

There are several different material of abrasion resistant pipe

Each grade is typically made to a specific Brinell hardness value, as opposed to other steels that are made with tensile strength and toughness in mind.

SHS ceramic lined
SHS are currently being developed the world over for the production of powders and near-net shape components of advanced materials.
Ceramic tile lined pipe
has very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe and gives a very smooth surface.
Ceramic ring composite steel pipe
The wear resistant ceramic ring is a special kind of ceramic with Al2O3 as the main raw material and the rare metal oxide as the flux.

Abrasion occurs when materials are rubbed across one another over a period of time.

Bi Metal Clad pipe
Bi Metal Clad
Bimetal Clad Pipe and Bend are cast with mold vanishing vacuum suction casting cladding process.
Rare earth metal wear resistant pipe
Rare earth alloy wear-resistant high chromium cast iron pipe under compared with the high manganese steel materials


About 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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