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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...

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+ Seamless steel pipes by standard
Structure engineering
+ Seamless steel Pipes by applications
Carbon Steel Seamless Pipes
+ Carbon Steel Seamless Pipes

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Our highly-skilled manpower is dedicated to producing the finest quality steel pipe, pipe fittings, meeting a wide variety of material specifications.

Please view the recommended seamless pipes and tubes as below

Boiler tubes
Boiler pipesBoiler tubes need to withstand high pressure and temperature.
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.
Tubes for Fluid Transportation Service
Tubes for ship building
The Seamless steel pipe for ship building usage are mainly used for Level 1& Level 2 pressure pipe in piping system, boiler and super-heated unit of shipbuilding.
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.
Internal Threaded Tubes
Internal Threaded Tubes
Internal Threaded Tubes are served in super/ultra super critical water wall panels over 300,000KW of boiler...
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.
Stainless Stee pipes/ tubes
Stainless Stee pipes/ tubes
Stainless steel tubing is typically measured by its outer diameter and can be used in a variety of applications including a number of structural applications.
Seamless Precision tubes
Seamless Precision steel tubesSeamless Precision Steel Tubes according to EN 10305-1
Mechanical tubes

Seamless Steel Tubes for Mechanical and Automobile usage for Backbone of Automobile and rear axle tube, manufacturing and processing of precision equipments, instruments and apparatus.
Rare Earth Alloy Casting Pipe
Rare Earth Alloy Wear-resisting Casting Pipe My company and major universities jointly developed a new type of high-strength wear-resistant alloy of rare earth products, it is crucial to overcome the technical material of cold, heat, cracking, brittleness, deformation, etc.
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.
Tubing and Casing
Tubing and Casing, Line Pipes
Tubing and casing strings are the main parts of the well construction.
API Seamless Pipe

API seamless pipe is a hollow cross section, no seams round, square, rectangular steel.

Corrosion resistance under sour service conditions is a very important OCTG characteristic, especially for casing and tubing.
Bi Metal Clad flanged pipe
Bi Metal Clad flanged pipe
Bi Metal Clad flanged pipe is cast with mold vanishing vacuum suction casting cladding process.
Rare earth cast iron pipes
Rare earth alloy wear-resistant high chromium cast iron pipes
Rare earth alloy wear-resistant high chromium cast iron pipe is a high-strength low-alloy rare earth heat...

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.
Condition on delivery:
Term Symbol Explanation
(cold-finished as-drawn)
BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
(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.

Recommended steel products you like:

We provide our customer with mainly steel pipe include carbon steel seamless tube,stainless seamless tube, alloy seamless tube,seamless pipe, welded pipes and ceramic lined pipe. The fittings include bend pipe, flange, cap, tees and cross, elbow, concentric reducer etc.

The The ceramic-lined steel composite pipe
Ceramic Lined Pipe
SHS (Self-propagating High-temperature Synthetic process) ceramic lined steel pipe and elbow...
Bi Metal Clad pipe
Bi Metal Clad Pipe
Bimetal Clad Pipe and Bend are cast with mold vanishing vacuum suction casting cladding process.
Rare Earth Casting
Rare high-strength low-alloy heat-resistant, wear-resistant steel parts for the power plant boiler systems...
Ceramic tile lined pipe
Ceramic Tile Lined Pipe has very uniform coating of specially formulated ceramic material...

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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