quality Seamless Steel Tube & Cold Drawn Seamless Tube factory

  Mechanical pipelines are divided into mechanical hoses and hard pipes, but each has its own advantages and disadvantages in terms of structural characteristics and use effects. Hard pipes have a larger bending radius than hoses, can withstand higher temperatures, and have a more compact layout. However, hoses have better shock absorption, better flexibility, and can connect moving metal parts than hard pipes.   Specification   Production Range Outer Diameter:10-120mm (0.4 inch - 4.7 inch) Wall Thickness:1-20mm (0.04 inch - 0.78 inch) Material / Grade Carbon Steel: GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C Alloy Steel: GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 Tolerance Tolerance ±0.15mm,Superior products ±0.05mm, Can be customized according to customer's requirements Technique Cold Drawn / Cold Rolled / Hot Rolled Shape Round Further Processing for Steel Tubes Final Annealing, Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking   FAQ   Q1. Are you a manufacturer or trader? We are a manufacturer, and we can have our own factory produced many steel products.   Q2. Whether your company supports Trade Assurance order? Yes, we can (100% product quality protection; 100% on-time shipment protection; 100% payment protection)   Q3. Can we get the some samples? Any charges? Yes, you can get available samples in our stock. If the samples from new production, we will charge some reasonable cost, but this amount will be deducted from your first order.   Q4. How do we build up business relations with your company? Send us your requirement which includes size, coating info, parameters, quantity, destination .   Q5. What is the MOQ? We can accept small orders. Please feel free to contact us, we can meet your requirements.   Q6. What's your advantage? With high-quality products and efficient customer service, we adhere to the principle of customer first.   Q7. How long is your delivery time? Delivered within 15 days after receipt of deposit.  

  Hot-rolled seamless steel pipes are generally produced on automatic pipe rolling units. After inspecting and removing surface defects, the solid tube blank is cut to the required length with the end face of the perforated end of the tube blank as the center, and then sent to the heating furnace for heating and perforated on the piercing machine. While piercing, continue to rotate and advance. Under the influence of the rollers and the end, the tube blank is gradually hollowed out, which is called a capillary tube. Then it is sent to the automatic pipe rolling machine for continuous rolling, and the sizing machine is used to determine the diameter, and the homogenizer is used to level the wall thickness to meet the specification requirements.   Specifications   Item Structural Seamless Steel Pipe Tolerance -1%+1% Length 12m, 6m, 6.4m, 1m, 13m, Customer′s Requirements Oiled or Non-Oiled Non-Oild Usage Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose Special Pipe API Pipe, Other, EMT Pipe, Thick Wall Pipe Weight Actual Weight or Theorectical MOQ 1 Ton   Application The scope of use of structural seamless steel pipes includes general building structures and mechanical structures, such as steel structure workshops, automobile chassis, plastic machinery, etc. At present, structural seamless steel pipes have been widely used in construction, machinery, transportation, aviation, oil exploration and other industries.  

  Seamless boiler tubes are specifically designed to withstand high temperatures, pressures, and corrosive environments associated with boiler systems. Their seamless construction, high-temperature resistance, corrosion resistance, and dimensional precision make them essential components for reliable and efficient boiler operations.   Specifications   Type Main Material Operational Standard Specification Use Alloy Pipe P5/T5, STFA25, P11, P12, STFA22, 13CrMo44, 12Cr1MoV, P22, 10CrMo910, T91/P91, P9/T9, WB36 GB5310-2008 ∮16-426×2-90mm Petroleum Chemical Industry, Electric Power, High Temperature Resistant GB9948-2006 ASTM A335/A335M ASTM A213/A213M DIN17175-1979 JISG3467-1988 JISG3458-1988 High Pressure Boiler Pipe 20G, 12Cr1MoVG, 15CrMoG, ST45.8/III GB5310-2008 ∮16-824×2-65mm Heat Resistant Seamless Steel Pipe Used for High Pressure Boiler ASTM A106-1999 DIN17175-1979 Petroleum Cracking Pipe 20, 1Cr5Mo, 15CrMo GB9948-2006 ∮10-530×1.5-36mm Petroleum Refinery Furnace Tube, Heating Exchange Pipe, Seamless Pipe Used in Conduit Pipe for chemical fertilizer facility 20, 16Mn, 12Cr2Mo GB6479-2000 ∮25-426×6-40mm Chemical Fertilizer Facility Pipe Low or Middle Pressure Boiler Pipe 10, 20 GB3087-2008 ∮10-426×2-40mm Low Pressure Boiler Heating Exchange, Boiling Water Pipe, Vehicle Vent-pipes Fluid Pipe 20, Q345 GB/T8163-2008 ∮8-610×1.5-40mm Fluid Transportation Structure Pipe 20, 45, 40Cr, Q345 GB/T8162-2008 ∮6-610×1.5-40mm In General Structure Pipe of Pipelines B, X42, X52 API 5L-2000 ∮40-325×3-40mm Petroleum, Gas transportation Pipe for Hydraulic pressure Cylinder 20, 45, 27SiMn GB/T17396-1998 ∮70-377×12-40mm Hydraulic Pressure Bracket Pipe for Manage ship 360, 410 GB/T5312-1999 ∮14-426×2-45mm Make shipping to use and manage Oil Pipe J55, K55, N80, L80, P110 API 5CT-2005 ∮60-114×4-12mm Transmission oil pipeline Drill Pipe E75, X95, G105, S135 API 5D-2001 ∮60-139×6-13mm Oil well drilling Casing Pipe J55, K55, N80, L80, P110 API 5CT-2005 ∮114-273×4-13mm Oil well wall lining   Characteristics of Seamless Boiler Tubes:   High-Temperature Resistance: Seamless boiler tubes are manufactured from materials that can withstand high temperatures generated in boiler systems. Common materials used for seamless boiler tubes include carbon steel, alloy steel, and stainless steel. These materials offer excellent heat resistance, ensuring the tubes can handle the extreme temperatures and thermal stresses associated with boiler operations. Seamless Construction: Seamless boiler tubes are produced using a seamless manufacturing process, which involves heating a solid steel billet and then piercing it to form a hollow tube. This seamless construction eliminates the presence of welds or joints, which can be potential weak points in the tube. The absence of welds enhances the strength and integrity of the tubes, making them more reliable in high-pressure and high-temperature environments. Corrosion Resistance: Seamless boiler tubes are often made from materials with good corrosion resistance properties. Stainless steel and certain alloy steels, such as chrome-molybdenum (chrome-moly) steel, offer excellent resistance to corrosion and oxidation at elevated temperatures. This corrosion resistance helps to maintain the integrity of the tubes, ensuring long-term reliability and minimizing the risk of failure or leaks. Dimensional Precision: Seamless boiler tubes are manufactured with precise dimensions to meet the requirements of boiler systems. They are available in various sizes, diameters, and thicknesses, allowing for customization to specific project needs. The dimensional precision of the tubes ensures proper fit and compatibility with boiler components and facilitates effective heat transfer. High Pressure Resistance: Seamless boiler tubes are designed to withstand high-pressure conditions commonly found in boiler systems. They are engineered to handle the internal pressures generated by the steam or fluid circulating within the boiler. The tubes' strength and durability enable them to withstand the stress and pressure without deformation or failure, ensuring safe and efficient operation.  

  Specifications   Products name Hot rolled seamless steel pipe Thickness Sch40-sch80 or according to clients request OD 12mm-800mm WT 0.5mm-20mm Stock Normal thickness can supply from stock Length 1-12m Sruface Treatment bare, oiled, galvanized, coating, painting, etc Output Capacity 200000 tons per year MOQ 1 ton Usage structure pipe, water pipe, oil and gas pipe, etc   Here are some key characteristics and features of hot rolled seamless steel pipes: Manufacturing Process: Hot rolled seamless pipes are produced by heating the steel billet or ingot to a temperature above its recrystallization temperature and then rolling it through a series of rolling mills. The hot rolling process ensures a smooth and uniform surface finish. Size Range: Hot rolled seamless pipes are available in a wide range of sizes, from small diameters to large diameters. This versatility allows for various applications and requirements in different industries. Strength and Durability: Hot rolled seamless pipes are known for their high strength and durability. The hot rolling process enhances the mechanical properties of the steel, making it suitable for applications that require resistance to high pressure and stress. Wide Application: Hot rolled seamless steel pipes find applications in various industries, including oil and gas, construction, infrastructure, machinery, and automotive. They are commonly used for conveying fluids, gas, and steam in high-pressure environments. Cost-Effective: Hot rolled seamless pipes are generally more cost-effective compared to cold drawn or cold rolled seamless pipes. The hot rolling process is less complex and requires fewer manufacturing steps, resulting in a relatively lower production cost. Surface Finish: Hot rolled seamless pipes have a characteristic scale or oxide layer on their surface, known as mill scale. This layer can be removed through a process called descaling if a smoother surface finish is desired. Availability: Hot rolled seamless pipes are readily available in the market due to their wide production and popularity. They can be sourced from steel mills, distributors, and suppliers specializing in steel pipe products.    

  Shandong Fengbao Metal Products Co., Ltd is a manufacturer and supplier of Seamless Carbon Steel Pipe products for various uses. The carbon steel comprises of carbon and iron for the most part. Trace amounts of silicon, manganese and copper are allowed in different quantities depending on the grades. The Carbon Steel Seamless Pipe material therefore is stronger and is highly stress resistant. These properties make the pipes be applicable in heavy duty services.   Specifications   NAME Cold Drawn Seamless Carbon Steel Pipe STANDARD ASTM, GB, API, JIS, BS, DIN, YB, SNY, etc MATERIAL 10#,20#,45#,A53A,A53B,A106Gr.A,A106Gr.B,A106A,A106B,ST52,ST358,16Mn, Q235, Q195, Q345, Q215, API 5L Gr.B,Gr.65,Gr.60,Gr.70, X42,X52,X60,X65,X70,X80,etc SPECIFICATION Outer diameter: 15mm-1626mm Wall thickness: 2mm-30mm Length: 6m-12m or as requested SEAM SAW(Spiral welded),SSAW(Spiral submerged-arc welded),HSAW,(Helical Submerged Arc Welded), ERW, SURFACE Black painted, PE/PVC/PP coated, Galvanized, color coated, anti rust varnished, anti rust oiled, checkered, epoxy coating, etc. END plain end, spigot & socket joint, beveled, cut square, flanged, piling shoes END PROTECTOR 1) Plastic pipe cap 2) Iron protector PACKAGE Standard export package, suit for all kinds of transport or as required. PRICE TERM EXW, FOB, CFR, CIF, etc. PAYMENT TERM T/T, L/C at sight, etc. APPLICATION 1) General service for industries ( petroleum, chemical, aviation, etc.) 2) Fluid, gas and oil transport, 3) Press and heat transmission, 4) City construction, etc. CONTACT Please inform us if any item is interesting to you.   Descriptions Grades Structural pipe 20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2 SAE1018, SAE1020, SAE1518, SAE1045. Liquid pipe 20# q295b-e, q345b-e High pressure boiler tube 20G 15MnG 20MnG 15CrMoG, 12Cr1MoVG St35.8, sa106b, sa106c, sa210a, sa210c, A333P2, A333P11, A33P12, A333P22, A33P36, A333P91, A333P92, A335T2, A335T11, A335T12, A335T22, A335T91, A335T23, A335T9 Pipeline API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTMA53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245 Alloy pipe 4140, 42CrMo, 32CrMo, 15CrMo, Packing Black paint, Varnish painting, Tarpaulin packing End Common round end, beveled. Processing Galvanizing; cutting; making thread outside the pipe; Machining.   Application   Carbon steel seamless pipes are extensively applied in the nuclear device, gas conveyance, petrochemical, shipbuilding and boiler industries, with characteristics of high corrosion resistance combined with suitable mechanical properties. - Nuclear device - Gas conveyance - Petrochemical industries - Shipbuilding and boiler industries  

  Specifications   Product name hydraulic cylinder tube /honed tube /seamless honed steel tube Standard GB/T3639-2000 DIN2391 EN10305 ASTM A519 Metarial C20 CK45 Q355B Q355D E355/ST52 SAE1026 4130 4140 STKM 13C Heat treatment BK+S Size I.D:30mm-400mm O.D:40mm-480mm Length Fixed length ,Random length or as requests of customers Straightness 0.5-1/1000 ID roughness RA 0.1-0.8micron(max) Payment term FOB, CFR, CIF,EXW, FCA and so on Application Honed tube for hydraulic cylinder,swivel crane,injection machine and construction machine application Conservation anti rust oiled inside and outside surface, plastic caps in both ends Package bundle with steel strip and knitting strip, or wooden case   Application   Honed seamless tubes are commonly used in industries such as hydraulic and pneumatic systems, automotive, aerospace, and precision engineering. They are often used as cylinder barrels, piston rods, and other components that require precise dimensions, tight tolerances, and excellent surface quality.     1) All standard steel products are stocked, timely shipping as per clients request. 2) Lead time generally about 15-30 working days after receiving the deposit. 3) Standard export package,suit for all kinds of transport,or as required. 4) If special requirements, may need longer delivery time. 5) Loading port: As required.