We supply cold drawn stainless steel and Incoloy tube, manufactured starting from our own raw material, for applications where tighter dimensional tolerance and improved surface finish matter more than standard as-welded tube can reliably deliver.
Standard welded tube is sized and finished to its final dimension as part of the welding and forming process — reliable and cost-effective for the large majority of applications, but not always tight enough where a component depends on precise fit. Cold drawn tube goes a step further: starting from our own raw material, the tube is reduced to its final dimensions under controlled tension in a cold-working process applied after initial forming, rather than relying solely on the as-welded size. The result is meaningfully tighter control over outer diameter and wall thickness, a smoother surface finish inside and out, and improved mechanical properties from the cold work itself — the tube comes out mechanically stronger than it went in, not just more precisely sized.
This matters most in applications where fit is the point, not just flow — instrumentation tube seating into a compression fitting, hydraulic lines under pressure, or any assembly where an out-of-tolerance section could mean a leak path or a failed fit rather than just a cosmetic issue.
| Grades | 200 Series, 300 Series, 400 Series, and High-Nickel Alloys |
| Finishes | As-welded, annealed & pickled, matte polished, mirror polished |
| Testing | Air-under-water, hydro-testing, eddy-current, and other lab tests — see our Quality Assurance page for the full process |
Cold drawn tube is typically supplied to the same family of standards as as-welded tube for the target application (ASTM A269, A249), with the drawing process itself governed by the tolerance called out on your order.
Cold drawing is a cold-working process applied after initial tube forming, which reduces the tube to its final dimensions under controlled tension rather than relying solely on the as-welded size. This delivers meaningfully tighter OD and wall-thickness tolerance, a smoother surface finish, and improved mechanical properties from the cold work — advantages that matter most in instrumentation, hydraulic, and other precision applications where fit and tolerance are critical. We can manage tolerances as tight as ±0.02mm, depending on size, grade and thickness.
Grade, size, standard, quantity — send what you have and we'll respond with availability, lead time and pricing.