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| Property | Parameter | Description |
|---|---|---|
| Product Name | Seamless Precision Steel Tube | Cold-drawn or cold-rolled seamless tube with tight tolerances |
| Material Grade | E235 / E355 / St35 / St52 / SAE 1020 / SAE 1045 | Common precision tube steel grades |
| Standard Compliance | EN 10305-1, DIN 2391, ASTM A519, ISO 3304 | Meets major international precision tube standards |
| Manufacturing Process | Cold Drawn / Cold Rolled | Seamless process for superior dimensional accuracy |
| Carbon (C) | 0.10 - 0.50% | Varies by grade, provides strength |
| Manganese (Mn) | 0.40 - 1.60% | Improves hardenability and tensile strength |
| Phosphorus (P) | ≤0.025% | Controlled for improved ductility |
| Sulfur (S) | ≤0.025% | Low sulfur for better machinability and weldability |
| Silicon (Si) | 0.10 - 0.35% | Deoxidizer and strengthener |
| Tensile Strength | 340 - 780 MPa | Depends on grade and heat treatment condition |
| Yield Strength | 215 - 580 MPa | Minimum yield strength per applicable standard |
| Elongation | ≥10 - 30% | Ductility varies by grade and wall thickness |
| OD Range | 4mm - 120mm | Precision outer diameter with tolerance ±0.05mm to ±0.15mm |
| Wall Thickness | 0.5mm - 20mm | Tight wall tolerance ±5% to ±10% |
| Length | 1m - 12m or custom | Fixed, random, or cut-to-length available |
| Surface Finish | Bright Annealed, Phosphated, Oiled, Polished | Multiple surface treatment options for end-use requirements |
| Application | Hydraulic systems, automotive, machinery, pneumatic cylinders | Ideal for high-precision mechanical and fluid power applications |
| Certification | EN 10204 3.1, ISO 9001, IATF 16949 | Quality certifications provided with shipment |
| Packaging | Bundled with plastic caps, oiled, wrapped in waterproof paper | Standard export packaging to prevent corrosion |
| MOQ | 1 ton | Minimum order quantity for standard sizes |
Acceptable Quality with Packaging Issue Resolved
Ordered 1.5 tons of SAE 1020 precision tubes, 20mm OD x 2mm WT, for instrumentation lines. Tube quality and dimensions were fine, but some end caps came loose during transit causing minor surface scratches on about 10% of pieces. Reported the issue and they provided a credit note within a week. Subsequent trial shipment had improved packing.
Ordered 1.5 tons of SAE 1020 precision tubes, 20mm OD x 2mm WT, for instrumentation lines. Tube quality and dimensions were fine, but some end caps came loose during transit causing minor surface scratches on about 10% of pieces. Reported the issue and they provided a credit note within a week. Subsequent trial shipment had improved packing.
