20# Carbon Steel Precision Pipe 0.1mm-0.2mm Tolerance for Fuel Injection Systems and Automotive Components
Precision steel pipe is a high-precision, high-brightness seamless steel tube manufactured through cold drawing or cold rolling processes. With inner and outer diameter accuracy within 0.2mm, these pipes offer exceptional bending and torsional strength while maintaining lightweight properties.
Inner and outer diameter dimensions accurate to within 0.2mm, with wall thickness tolerance of ±10% (minimum ±0.12mm).
Manufactured from 20# carbon steel with excellent mechanical properties, corrosion resistance, and superior processing performance.
Smooth inner and outer surfaces free from impact burrs, ensuring optimal performance in demanding applications.
Available in thicknesses from 0.5mm to 2mm with ±10% tolerance.
| Outer Diameter (mm) | Inner Diameter Options (mm) |
|---|---|
| 4 | 3±0.30, 2.4±0.30, 2±0.30 |
| 6 | 5±0.25, 4.4±0.25, 4±0.25, 3.6±0.30 |
| 8 | 7±0.20, 6.4±0.20, 6±0.20, 5.6±0.30, 5±0.30, 4.4±0.35, 4±0.35 |
| 10 | 9±0.15, 8.4±0.15, 8±0.20, 7.6±0.25, 7±0.25, 6.4±0.30, 6±0.30 |
| 12 | 11±0.15, 10.4±0.15, 10±0.15, 9.6±0.20, 9±0.20, 8.4±0.25, 8±0.25 |
| 14 | 13±0.10, 12.4±0.10, 12±0.10, 11.6±0.15, 11±0.15, 10.4±0.20, 10±0.20 |
| 16 | 15±0.10, 14.4±0.10, 14±0.10, 13.6±0.10, 13±0.10, 12.4±0.15, 12±0.15 |
| 25-30 | ±0.10 tolerance across all inner diameter options |
| 35-40 | ±0.15 tolerance across all inner diameter options |
| 45-60 | ±0.20-0.25 tolerance range |
| 70-120 | ±0.30-0.50 tolerance range |
| 150-200 | ±0.75-1.0 tolerance range |
- Cold Drawing: Cold processing of hot-rolled steel pipes through drawing to achieve precise diameter and wall thickness requirements
- Cold Rolling: Multi-pass rolling and drawing of hot-rolled billets for gradual size adjustment and control
- Cold Extrusion: Heating steel billets to appropriate temperature and extruding through specialized dies to produce pipes with uniform wall thickness and high surface finish
- Automotive Manufacturing: Fuel injection systems, cylinders, sensors, exhaust systems, chassis components, engines, and transmissions
- Aerospace Industry: Aircraft engines, missile control systems, leading edge flaps, high-pressure hydraulic systems, and gas systems
- Petrochemical Sector: Oil and gas extraction pipelines, transportation systems requiring high pressure resistance and corrosion protection
- Machinery Manufacturing: High-precision shafts, tubes, rollers, pins, bearings, instrument cases, and precision mechanical parts
- Medical Equipment: Pharmaceutical pipelines, high-precision instruments, and medical devices requiring corrosion resistance and pressure tolerance
All production and inspection procedures strictly follow established manufacturing standards. Our commitment includes competitive pricing based on real market conditions, secure transaction processing, comprehensive after-sales support, and long-term partnership opportunities.
Shandong Zhengde Metal Manufacturing Co., Ltd. operates five production bases with over 100 production lines, 4 nationally recognized laboratories, and exports to more than 50 countries worldwide.
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