Cold-rolled / cold-drawn precision tube, mirror bore, tight wall tolerance.
| Outside diameter | 6–120 mm typical; larger on request |
|---|---|
| Wall thickness | 0.5–12 mm |
| Tolerance | OD ±0.05 mm, wall ±5% (grade dependent) |
| Length | Up to 12 m, cut to length |
| Standards | GB/T 3639, GB/T 8713, EN 10305-1, ASTM A519 |
| Delivery | Bright annealed, polished, degreased, vacuum packed |
Precision tube is made from hot-rolled seamless hollow or bar, then cold rolled and drawn over several passes with in-line heat treatment, straightening and polishing. The point is not just a smooth surface: it is a wall that stays within tolerance around the circumference and along the length, so the part can be used without boring it out.
Multi-roll cold rolling with controlled reduction per pass, bright annealing in a protective atmosphere, then multi-pass sizing and straightening.
Internal and external mirror polishing, degreasing and vacuum packing for hydraulic and pneumatic use.
Machining allowance reduced by up to 80% compared with hot-rolled hollow, and material utilisation improved by more than 15%.
Consistent wall means predictable burst pressure and no balancing of wall thickness after machining.
Small-bore precision tubing for impulse, sampling and signal lines.
Specifications
Hygienic stainless tube, Ra ≤ 0.8 µm bore, CIP/SIP compatible.
Specifications
Hot-rolled and cold-drawn seamless pipe, 4–900 mm OD, carbon to nickel alloy.
SpecificationsQuotes within one business day. Send grade, size, pressure class, face type and quantity — a drawing works better than a description.
