Seamless
Cold Pilgered Premium Tubes
Ultra-precision seamless tubes produced on a pilger mill — the premium cold-working process delivering the tightest tolerances, thinnest walls, and best concentricity for critical applications.
Cold pilgered premium tubes
OVERVIEW
The pinnacle of seamless precision.
Global Seamless produces cold-pilgered tubes using a reciprocating die and mandrel process that incrementally reduces OD and WT with exceptional dimensional control. Pilger milling achieves wall thickness ratios and concentricity levels unattainable by conventional cold drawing.
Cold-pilgered tubes are specified where extreme precision is non-negotiable — nuclear fuel cladding, aerospace hydraulics, medical devices, high-pressure instrumentation, and premium heat exchanger applications.
✓ OD tolerance: ±0.002 in (±0.05 mm) achievable
✓ WT tolerance: ±5% to ±8%
✓ Eccentricity: < 5% standard
✓ Thin-wall ratios: OD/WT > 25:1 achievable
✓ Stainless, nickel alloy, and zirconium grades
✓ WT tolerance: ±5% to ±8%
✓ Eccentricity: < 5% standard
✓ Thin-wall ratios: OD/WT > 25:1 achievable
✓ Stainless, nickel alloy, and zirconium grades
Cold pilgered precision tubes
DIMENSIONAL SPECIFICATIONS
Available size range.
Cold Drawn Seamless (CDS)
| Outside Diameter (OD) | Wall Thickness (WT) | Length | OD Tolerance |
|---|---|---|---|
| 0.236 – 0.750 in (6.00 – 19.05 mm) | 0.020 – 0.098 in (0.50 – 2.50 mm) | up to 52.5 ft (16.0 m) | ±0.002 in (±0.05 mm) |
| 0.750 – 2.000 in (19.05 – 50.80 mm) | 0.039 – 0.197 in (1.00 – 5.00 mm) | up to 52.5 ft (16.0 m) | ±0.0031 in (±0.08 mm) |
| 2.000 – 4.500 in (50.80 – 114.30 mm) | 0.059 – 0.315 in (1.50 – 8.00 mm) | up to 52.5 ft (16.0 m) | ±0.004 in (±0.10 mm) |
APPLICATIONS & INDUSTRIES
Where these tubes get used.
MATERIAL GRADES
Stainless · nickel alloy · and special metals.
AUSTENITIC SS
TP304L · TP316L · TP321
Precision stainless for heat exchangers, condensers, and instrumentation.
DUPLEX & SUPER
2205 · 2507
High-strength duplex grades pilgered to tight tolerances for offshore and chemical.
NICKEL ALLOY
Inconel 625 · Alloy 825
Premium nickel alloys for extreme corrosion and high-temperature service.
TECHNICAL ARTICLES
Latest insights on cold pilgered tubes.
ARTICLE
Pilgering vs Drawing
When to specify pilger-milled tubes over conventional cold drawing.
ARTICLE
How the Pilger Mill Works
The reciprocating die process that delivers ultra-precision dimensions.
ARTICLE
Thin-Wall Tubes Pilgering
Achieving extreme OD/WT ratios for weight-critical applications.
RELATED PRODUCTS
Often paired with.
RELATED
Cold Drawn Seamless
Standard cold-drawn route for less critical precision requirements.
RELATED
Stainless Steel Seamless
Material category for stainless grades used in pilgering.
GET A QUOTE
Send your cold pilgered tube spec.
Get a proposal in one business day.
Grade, OD, WT, length, tolerance class, quantity — we revert with a technical & commercial proposal.