Stainless Steel Coiled Tube

What is stainless steel coiled tube?

Stainless steel coiled tube is seamless or welded tube produced in continuous coils, eliminating field joints for long runs. It is used in heat exchangers, chemical injection lines, HVAC, refrigeration, and precision instrument tubing applications.

What OD and wall thickness are available for coiled stainless steel tube?

Coiled tube is available in OD from 0.8 mm to 25.4 mm with wall thickness 0.2 mm to 2.5 mm. Coil lengths exceed 300 m for small OD tubes. Standard grades are 304, 316L, and duplex 2205; all supplied in fully annealed condition.

What is the minimum bend radius for stainless steel coiled tube?

Minimum bend radius is typically 3× OD for seamless tube and 4× OD for welded tube in soft-annealed condition. Tighter radii are achievable with mandrel bending for small-OD precision coils.

What standards apply to coiled stainless steel tube?

Coiled tubes comply with ASTM A269 (general service seamless and welded), ASTM A213 (boiler/heat exchanger service), EN 10216-5, and EN 10217-7. Full proof pressure testing and EN 10204 3.1 material certification are standard.

What are the advantages of coiled tube over straight tube in the field?

Coiled tube eliminates field joints and compression fittings, reducing leak points. It allows continuous instrument or chemical injection runs over long distances. The coil form also improves heat transfer in compact immersion heat exchangers.