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Help CenterPrecision Steel Tube＆Precision Steel Pipe，10#, 20#, 45#, 16Mn, Q345B, ST35, ST37.4, ST52, E355, S235JR, S355JR
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Precision Steel Tube＆Precision Steel Pipe，10#, 20#, 45#, 16Mn, Q345B, ST35, ST37.4, ST52, E355, S235JR, S355JRNegotiableMOQ: 5 Metric Tons -
Precision Steel Tube＆Precision Steel Pipe，10#, 20#, 45#, 16Mn, Q345B, ST35, ST37.4, ST52, E355, S235JR, S355JRNegotiableMOQ: 5 Metric Tons
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Hot-dip Galvanized Square Steel Pipe＆Steel Pipe & Tube，Q235B, Q355B, SS400, ST37, ST52NegotiableMOQ: 5 Metric Tons
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1. Product Overview
Precision steel tube (also known as precision seamless steel tube) is a high-precision steel pipe produced by cold drawing or cold rolling process. It features high dimensional accuracy, smooth inner & outer surface, uniform wall thickness, and excellent mechanical properties. It is widely used in hydraulic systems, pneumatic components, automotive parts, machinery manufacturing, instrumentation and other high-end equipment fields.
2. Main Specifications
- Product Name: Precision Steel Tube / Precision Seamless Steel Tube
- Materials: 10#, 20#, 45#, 16Mn, Q345B, ST35, ST37.4, ST52, E355, S235JR, S355JR
- Outer Diameter: 4mm – 120mm
- Wall Thickness: 0.5mm – 20mm
- Tolerance: OD ±0.02mm – ±0.05mm; ID ±0.02mm – ±0.05mm
- Straightness: 0.1 – 0.5mm/m
- Length: 1m – 6m, customized length available
- Surface: Bright, oiled, phosphated, blackened (optional)
- Standards: GB/T 3639, DIN 2391, DIN 2445, EN 10305
3. Product Features
- High precision & high finish: Inner and outer surfaces are smooth without oxide layer, suitable for direct assembly.
- Excellent dimensional stability: Strict tolerance control ensures consistency of each batch.
- Good mechanical properties: High strength, good toughness, strong pressure resistance.
- Easy for further processing: Can be cut, turned, drilled, tapped, bent and welded easily.
- Strong rust resistance: Surface treated with anti-rust oil or phosphating for long-term storage.
- Wide adaptability: Suitable for high-pressure, high-speed and high-precision working conditions.
4. Main Applications
- Hydraulic & pneumatic systems: hydraulic pipes, cylinder barrels, oil cylinders
- Auto parts: shock absorber tubes, fuel pipes, engine tubes
- Mechanical equipment: precision shaft sleeves, transmission shafts, structural parts
- Instrumentation & electrical appliances: precision casings, transmission components
- Engineering machinery, agricultural machinery, fitness equipment, etc.
5. Packaging & Delivery
- Packaging: Standard seaworthy export packing: anti-rust paper + woven bag + steel strip + wooden pallet / iron pallet
- MOQ: Small trial orders accepted
- Delivery Time: Stock items shipped within 3-7 days; customized orders 15-25 days
- Transportation: By sea, by air or international express
6. Quality Control
- Raw material inspection + production process control + 100% factory test
- Tests include: dimensional inspection, pressure test, ultrasonic flaw detection, hardness test
- Provide Material Test Certificate (MTC), inspection report and export documents
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