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Special-Shaped Steel Tubes (Hex/Oval/Triangle, etc.)Customized Hexagon Oval Triangle Irregular Special Section Shape Steel Pipe Tube offers versatile shapes and sizes, suitable for structural, construction, and industrial applications. Certified with ISO9001, SGS, BV, TUV, and API5L, ensuring compliance with international quality standards and enabling global market access. Enhanced durability with options like hot-dip galvanized and pre-painted coatings, meeting diverse environmental needs.
Container tube Fire fighting pipeWe specialize in supplying fire protection pipe systems, including galvanized steel pipes, seamless steel pipes, and coated pipes. These products strictly adhere to the high standards for pressure resistance, fire resistance, and durability required in fire protection engineering. Manufactured from high-quality steel and processed with precision anti-corrosion treatments, they ensure structural integrity and stable water delivery during fire emergencies, providing core protection for building fire safety, industrial fire protection, and public safety systems.- API N80 Oil casingOil country tubular goods (OCTG) are mainly used for the drilling of oil and gas wells as well as the transportation of oil and gas. Oil casings are primarily used to support the wellbore during drilling and after well completion, so as to ensure the smooth progress of the drilling process and the normal operation of the entire oil well after completion. Oil casings are the lifeline for maintaining the operation of oil wells. Due to different geological conditions, the stress state downhole is complex, with tensile, compressive, bending, and torsional stresses acting on the pipe body comprehensively, which places high requirements on the quality of the casings themselves.
API 5CT Oil PipeOur oil pipeline steel is specially designed for oil and gas transportation, featuring high strength, corrosion resistance, and excellent weldability, making it suitable for harsh working environments and complex operating conditions in the petroleum industry. The product complies with international standards such as API 5L, covering various grades (e.g., X42 to X80), ensuring safe and reliable energy transportation. Custom sizes and coating options are available to meet your project requirements.
Pickling Carbon Steel PipePickled carbon steel pipes are precision steel tubes made from high-quality carbon steel as the base material, processed through pickling to remove surface oxide layers and impurities. Featuring a clean, bright surface and precise dimensions, they combine the strength of carbon steel with excellent workability. These pipes are suitable for applications requiring high surface quality and dimensional accuracy, such as mechanical structures, automotive manufacturing, and precision equipment.- Q255/SM400 Welded steel pipeWelded steel pipes are manufactured through forming and welding processes using steel plates or strips. Featuring relatively thick walls, these pipes exhibit high strength and stiffness, enabling them to withstand significant pressure and impact loads while delivering excellent mechanical performance. They are widely used in industries such as construction, petroleum, chemical, light industry, and machinery manufacturing.
- Q345/S355JR/Gr.50 Seamless Steel PipeWe supply seamless steel pipes manufactured through advanced hot-rolled or cold-drawn processes, offering superior structural integrity and pressure resistance for demanding industrial applications. With no welded seams, these pipes provide consistent wall thickness, excellent mechanical properties, and enhanced safety in high-pressure and high-temperature environments.
ISO 2531 Ductile Iron Double Welding PipeDuctile iron pipe refers to the use of more than 18 casting hot metal after the addition of spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting into the pipe, referred to as the ductile iron pipe, ductile iron pipe and ductile casting pipe. Mainly used for the transmission of tap water, is the ideal choice of water pipeline materials.- K7 100mm 150mm Ductile Cast Iron PipeDuctile iron pipe refers to the use of more than 18 casting hot metal after the addition of spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting into the pipe, referred to as the ductile iron pipe, ductile iron pipe and ductile casting pipe. Mainly used for the transmission of tap water, is the ideal choice of water pipeline materials.
- En545 En598 C25/C30/C40 Ductile iron pipeDuctile iron pipe refers to the use of more than 18 casting hot metal after the addition of spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting into the pipe, referred to as the ductile iron pipe, ductile iron pipe and ductile casting pipe. Mainly used for the transmission of tap water, is the ideal choice of water pipeline materials.
OD Size : 20mm – 1500mm
Length: max 16m
Type: Seamless, Hot Rolled, Cold Rolled, Cold Drawn
Straightness:≤ 0.5/1000
Roughness:0.2-0.4 u
Tolerance EXT: DIN2391, EN10305, GB/T 1619
Tolerance INT:H7,H8,H9
Protection:Anti-rust oil on inside and outside surface, plastic caps in both ends.
Packing: Bundle with steel strip and PE sheet or wooden case
Our company produces high-precision seamless honed tubes using premium alloy structural steel, manufactured through multi-pass cold rolling and precision honing processes. The products feature low inner surface roughness, high dimensional accuracy, and excellent straightness, making them suitable for high-pressure hydraulic systems that demand strict requirements for motion precision and sealing performance.
This production line features an integrated cold rolling-honing manufacturing system. Using our proprietary high-quality alloy steel tube blanks as the base material, we optimize material properties through precision cold rolling and controlled heat treatment processes. The core honing stage is equipped with CNC-specific equipment and a constant-temperature control system, ensuring high-precision inner diameter dimensions and stable surface quality. The entire line incorporates automated inspection points to achieve full-process quality traceability. With its scalable production capacity, this production line can meet customized requirements for high-performance hydraulic cylinder tubes across various industries.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.
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![Special-Shaped Steel Tubes (Hex/Oval/Triangle, etc.)]( "Special-Shaped Steel Tubes (Hex/Oval/Triangle, etc.)")
Special-Shaped Steel Tubes (Hex/Oval/Triangle, etc.)Customized Hexagon Oval Triangle Irregular Special Section Shape Steel Pipe Tube offers versatile shapes and sizes, suitable for structural, construction, and industrial applications. Certified with ISO9001, SGS, BV, TUV, and API5L, ensuring compliance with international quality standards and enabling global market access. Enhanced durability with options like hot-dip galvanized and pre-painted coatings, meeting diverse environmental needs.![Container tube Fire fighting pipe]( "Container tube Fire fighting pipe")
Container tube Fire fighting pipeWe specialize in supplying fire protection pipe systems, including galvanized steel pipes, seamless steel pipes, and coated pipes. These products strictly adhere to the high standards for pressure resistance, fire resistance, and durability required in fire protection engineering. Manufactured from high-quality steel and processed with precision anti-corrosion treatments, they ensure structural integrity and stable water delivery during fire emergencies, providing core protection for building fire safety, industrial fire protection, and public safety systems.![API N80 Oil casing]( "API N80 Oil casing")
API N80 Oil casingOil country tubular goods (OCTG) are mainly used for the drilling of oil and gas wells as well as the transportation of oil and gas. Oil casings are primarily used to support the wellbore during drilling and after well completion, so as to ensure the smooth progress of the drilling process and the normal operation of the entire oil well after completion. Oil casings are the lifeline for maintaining the operation of oil wells. Due to different geological conditions, the stress state downhole is complex, with tensile, compressive, bending, and torsional stresses acting on the pipe body comprehensively, which places high requirements on the quality of the casings themselves.![API 5CT Oil Pipe]( "API 5CT Oil Pipe")
API 5CT Oil PipeOur oil pipeline steel is specially designed for oil and gas transportation, featuring high strength, corrosion resistance, and excellent weldability, making it suitable for harsh working environments and complex operating conditions in the petroleum industry. The product complies with international standards such as API 5L, covering various grades (e.g., X42 to X80), ensuring safe and reliable energy transportation. Custom sizes and coating options are available to meet your project requirements.