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Galvanized steel pipes are classified into hot-dip galvanized steel pipes and cold-dip galvanized steel pipes (electro-galvanized) according to their manufacturing process. The former has strong corrosion resistance and a long service life; the latter has a thinner coating and is prone to peeling.
Our factory produces and sells various specifications and models of honed steel tube, including precision honed steel tubing, Hydraulic Cylinder Steel Pipe, Hydraulic Honing Steel Pipe, large-diameter honed steel tubes, and small-diameter honed steel pipe.
Our factory has six honed steel tube production lines capable of processing 12-1100mm honed steel tube (for model aircraft and cylinder tubes). The honed steel tubes (for model aircraft and cylinder tubes) produced by our factory typically achieve a roughness of Ra ≤ 0.08μm, correct roundness, and ovality ≤ 0.01mm. This improves surface hardness, eliminates stress-induced deformation, and increases hardness to HV ≥ 4°. A residual stress layer is formed after processing, increasing fatigue strength by 30%, improving fit quality, reducing wear, and extending component life.
Hydraulic cylinder steel pipe, also known as honing pipe, is a core component for transmitting high-pressure fluids in hydraulic systems. It is a cold-drawn or cold-rolled precision seamless steel pipe. Hydraulic cylinder steel pipe is primarily made of carbon steel (such as ST35 and ST45), alloy steel, and 304L stainless steel. It is widely used in hydraulic cylinders, pneumatic cylinders, construction machinery, and automotive precision components.
Hydraulic Honing Steel Pipe is a precision pipe manufactured through a honing process. Its interior surface undergoes a special treatment, resulting in exceptionally high smoothness and dimensional accuracy. Honing is a combined grinding and polishing process that effectively removes microscopic irregularities on the pipe’s interior surface, resulting in a mirror-like finish. Hydraulic Honing Steel Pipe is typically made from high-quality alloy steel or stainless steel and undergoes multiple processing steps to meet the needs of diverse industrial applications.
Inner Hexagonal Steel Pipe is a seamless steel pipe with a circular outer surface and a hexagonal inner surface. It is mainly used to connect, support and fix various mechanical equipment, with high strength, rigidity and stability. Inner Hexagonal Seamless Steel Pipe has a wide range of uses, including but not limited to structural support (such as bridges, high-rise buildings and industrial facilities), automobile manufacturing (such as chassis, suspension systems and engine mounts), aerospace (such as aircraft frames and rocket engine mounts), shipbuilding, pipeline support, agricultural machinery and decoration industries, etc.
LSAW steel pipe (Longitudinally Submerged Arc Welding abbreviated as LSAW) is a professional expression term for straight seam submerged arc welding steel pipe. Pipes produced by submerged arc welding and diameter expansion.
Oval Carbon Steel Pipe is a kind of carbon steel pipe with an oval cross section. When manufacturing Oval Carbon Steel Pipes, the steel in a high temperature state is first molded into an oval shape, and then processed into a tubular product. Compared with ordinary round steel pipes, Oval Carbon Steel Tube is more beautiful in appearance and has higher bending strength and compressive strength.
Pipeline steel pipes are pressure-bearing steel pipes specifically designed for transporting fluids such as oil, natural gas, and water. Their core characteristics are high strength, high toughness, good weldability, and corrosion resistance.
Pipeline steel pipes are mainly divided into seamless pipes and welded pipes (straight seam/spiral welded pipes), conforming to API SPEC 5L or GB/T 9711 standards, with steel grades such as X42–X120 (yield strength 290–830 MPa).
API SPEC 5L-2011 (Specification for Line Pipe), compiled and published by the American Petroleum Institute, is commonly used around the world. The main material of the pipe is L245, L290, L360, L415, L480, GR.B, X42, X46, X56, X65, X70, X80, X100 and other steel grades
Precision steel pipe is a high-precision, high-brightness seamless steel pipe produced by cold drawing or cold rolling. Its inner and outer diameters can be accurate to within 0.2mm. While ensuring bending and torsional strength, it is light in weight, so it is widely used in the manufacture of precision mechanical parts and engineering structures. It is also commonly used to produce various conventional weapons, barrels, shells, bearings, etc.
Rectangular Steel Pipe is a hollow long steel tube, also known as flat tube, flat square tube or square flat tube (as the name implies). When the bending and torsional strengths are the same, the weight is lighter, so Rectangular Steel Tube is widely used in the manufacture of mechanical parts and engineering structures.
Classification of Rectangular Steel Pipes: Steel pipes are divided into seamless steel pipes and welded steel pipes (seam pipes), hot-rolled seamless square pipes, cold-drawn seamless square pipes, extruded seamless square pipes, and welded square pipes.
Schedule 40 Steel Pipe is a commonly used wall thickness grade in American Standard piping systems. It has clear pressure standards and application specifications and is widely used in industries such as the petroleum and chemical industries. SCH40 Steel Pipe is available in welded, seamless, and galvanized versions, depending on the production standards and intended use.
Seamless steel pipes are long, hollow steel strips without weld seams, renowned for their high strength, pressure resistance, corrosion resistance, and structural uniformity. They are classified by manufacturing process into hot-rolled seamless steel pipes and cold-drawn (rolled) seamless steel pipes, and by application and material into various types such as structural, fluid transport, boiler, petroleum cracking, and stainless steel.
SHS Steel Square Hollow Section is a steel pipe with a square cross-section.
Square steel pipe, a steel pipe with a square cross-section, plays an important role in many fields such as construction, machinery manufacturing and steel structure engineering. There are many types of square steel pipes, which can be divided into many types according to different manufacturing processes and specific uses. These different types of square steel pipes can show unique functions and advantages in their specific applications, providing reliable support and protection for various projects.
Special-shaped steel pipe are seamless steel pipes made of various special shapes by cold drawing. Special-shaped seamless steel pipes are the general term for seamless steel pipes with other cross-sectional shapes except round pipes. According to the different cross-sectional shapes and sizes of steel pipes, they can be divided into equal wall thickness special-shaped seamless steel pipes, unequal wall thickness special-shaped seamless steel pipes, and variable diameter special-shaped seamless steel pipes.
Square steel pipe is a steel pipe with a square cross-section, mainly square seamless steel pipe, square welded steel pipe and square galvanized steel tube.
SSAW Steel Pipe, also known as spiral submerged arc welded steel pipe, is a type of pipe made by rolling narrow steel strips into large-diameter pipes. The spiral weld seam improves overall mechanical properties, reduces cost, and is suitable for medium- and high-pressure fluid transportation and structural applications. However, the weld seam is relatively long, requiring strict quality control.
Stainless steel tubes are divided into two categories: seamless tubes and welded pipes according to production methods. Seamless steel pipes can be divided into hot-rolled pipes, cold-rolled tube, cold-drawn pipes and extruded pipes. Cold-drawn and cold-rolled pipes are the secondary processes of steel pipes. Processing; welded pipes are divided into straight seam welded pipes and spiral welded tubes.
1. Mainly：201, 202, 304, 304L, 304H, 316, 316L,316Ti,2205, 330, 630, 660, 409L, 321, 310S, 410, 416, 410S, 430, 347H, 2Cr13, 3Cr13
etc
2. 300series:301, 302, 303, 304, 304L, 309, 309s, 310, 310S, 316, 316L, 316Ti, 317L, 321, 347
3. 200series:201, 202, 202cu, 204
4. 400series:409, 409L, 410, 420, 430, 431, 439, 440, 441, 444
5. Others:2205, 2507, 2906, 330, 660, 630, 631, 17-4ph, 17-7ph, S318039 904L,etc
6. Duplexstainless steel: S22053, S25073, S22253, S31803, S32205, S32304
7. Special Stainless Steel: 904L, 347/347H, 317/317L, 316Ti, 254Mo
Triangular Seamless Steel Pipe and Tube for PTO Shaft is a type of special-shaped steel pipe. The full name of PTO shaft is “Power Take Off”, which is an important part of agricultural machinery. The main function of PTO shaft is to transmit the power output of the tiller engine to the tilling implements, driving the tilling implements to perform operations such as turning the soil, loosening the soil, and sowing.
Triangular Seamless Steel Tube is a special shape of steel pipe, its cross section is triangular, and other parts can be round, rectangular or other shapes. This steel pipe has excellent mechanical properties and corrosion resistance, and is widely used in construction, machinery, ships, bridges, petroleum, chemical industry and other fields.
Welded steel pipe refers to a steel pipe with seams on the surface that is made by bending and deforming a steel strip or steel plate into a round, square or other shape and then welding it. The blank used for welded steel pipe is a steel plate or strip.
Common materials for welded pipes include: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc.