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Help CenterSteel Pipe & Tube & Precision Steel Tube，10#、20#、35#、45#、16Mn (Q345)、40Cr、42CrMo、27SiMn
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1. Product Definition
Precision Steel Tube, also known as precision seamless tube, is a high-precision pipe manufactured by sophisticated cold rolling and cold drawing processes. Precision Steel Tube features accurate dimensions, smooth inner walls and no oxide layer, serving as an upgraded high-end product of ordinary steel tubes. Our factory’s Cold Drawn Precision Tube and Alloy Precision Tube boast high precision and good consistency. They are widely used in high-precision working conditions such as mechanical manufacturing, hydraulic equipment, auto parts and automation equipment, and have become one of the most widely used high-end seamless pipes for industrial supporting applications.
2. Core Product Advantages
Ultra-high Dimensional Accuracy: Precision Steel Tube adopts extremely strict tolerance control for outer diameter and wall thickness, with a tolerance range of ±0.02mm~±0.1mm. It features high pipe concentricity and uniform wall thickness, with accuracy several times higher than ordinary steel tubes. Cold Drawn Precision Tube has superior overall dimensional stability.
High Internal and External Wall Smoothness: Precision Steel Tube has clean and smooth internal and external walls without peeling, pitting or oxide layers. Its inner wall has low roughness and small fluid resistance, making it suitable for high-pressure fluid and hydraulic oil circuit systems. It is the preferred Cold Drawn Precision Tube for the hydraulic industry.
Stable Mechanical Properties: Grain refinement is achieved through cold processing and bright heat treatment.Precision Steel Tube has high strength, good toughness, compression and burst resistance and is not easy to deform. High-strength Alloy Precision Tube can meet the requirements of heavy-load, wear-resistant and high-strength structural working conditions.
Excellent Processing Performance: Precision Steel Tube supports secondary processing such as cold bending, flaring, flattening, drilling and turning without cracking or deformation, with a high finished product qualification rate. Cold Drawn Precision Tube is compatible with various precision mechanical processing.
Dense and Durable Material: The pipe has uniform internal structure, few impurities and pure texture. Alloy Precision Tube features excellent fatigue resistance and wear resistance with a longer service life, suitable for long-term continuous operation of supporting equipment.
3. Common Materials
Carbon Steel Precision Tube: 10#, 20#, 35#, 45#. As the mainstream material for conventional Precision Steel Tube, it has high cost performance and strong versatility, and is the most circulated Cold Drawn Precision Tube in the market.
Alloy Steel Precision Tube: 16Mn, 40Cr, 42CrMo, 27SiMn. It features high strength, high wear resistance and high pressure resistance, mostly used for heavy-duty equipment, structural parts and high-pressure systems, belonging to high-end Alloy Precision Tube.
4. Specification Parameters
Outer Diameter Range: 3mm–200mm, full-caliber Precision Steel Tube supports customized production
Wall Thickness Range: 1.0mm–12mm with uniform thickness and precise tolerance
Conventional Length: 3m–6m, customized fixed length, multiple length and cutting processing are available
Accuracy Standard: The tolerance of outer diameter and wall thickness is within ±0.5%. High-end Cold Drawn Precision Tube can reach a higher precision level
5. Production Process
High-quality pipe billet → Pickling and Phosphating → Multi-pass cold drawing/cold rolling forming → NBK bright heat treatment → Precision straightening → Non-destructive flaw detection → Precision cutting and flatting → Appearance and dimension re-inspection → Finished product warehousing. The complete process ensures that every Precision Steel Tube, Cold Drawn Precision Tube and Alloy Precision Tube has unified dimensions, stable performance and no internal defects.
6. Execution Standards
GB/T 8162 Seamless Steel Tubes for Structural Purposes
GB/T 8163 Seamless Steel Tubes for Fluid Transportation
GB/T 3087 Seamless Steel Tubes for Low and Medium Pressure Boilers
7. Main Applications
Hydraulic and Pneumatic Industry: Cylinder tubes, air cylinder tubes, high-pressure hydraulic oil tubes. All adopt high-precision Precision Steel Tube with good sealing performance and stable pressure resistance.
Automobile Manufacturing Industry: Shock absorber tubes, transmission shafts, precision structural casings, widely equipped with Cold Drawn Precision Tube.
General Mechanical Manufacturing: Bearing sleeves, mechanical shaft sleeves, mold accessories, precision frame pipes. Precision Steel Tube is selected for conventional working conditions, and Alloy Precision Tube for heavy-load working conditions.
Fluid Transportation Equipment: Precision instrument tubes, high-pressure conveying pipelines and hydraulic system pipelines, with clean inner walls and stable conveying performance.
Heavy Industry and Hydraulic Equipment: Large oil cylinders, construction machinery hydraulic systems and high-strength structural parts, which prefer high-strength Alloy Precision Tube.
8. Delivery Cycle
Conventional stock Precision Steel Tube and Cold Drawn Precision Tube: Shipment within 5–7 working days
Custom orders for non-standard sizes, special wall thicknesses and Alloy Precision Tube: Shipment within 7–15 working days
Urgent orders: Can be expedited to 5–7 working days if production capacity permits
9. Packaging Method
Conventional Bundled Packaging: Pipes are neatly bundled with plastic protective caps at both ends, overall rust-proof and moisture-proof treatment to protect Precision Steel Tube and Cold Drawn Precision Tube from collision damage during transportation.
Export Wooden Box Packaging: High-precision, small-diameter and high-endAlloy Precision Tube is packed in wooden boxes to ensure zero damage during transportation.
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