Bilayer tube coil

OD1.0 x WT0.05mm
OD2.0 x WT0.10mm
OD3.0 x WT0.15mm
OD6.0 x WT0.30mm
OD6.0 x WT0.50mm
OD8.0 x WT0.50mm
OD12.0 x WT0.80mm
Other sizes can be customized

Customized according to drawings

Inside and outside bilayer
Upper and lower bilayer
Crossed bilayer
Circular bilayer
Square bilayer
Rectangular bilayer

The coil made of a single seamless tube, no welding connection, which reduces the leakage possibility.

For heat exchanging

Stainless steel tube coil is usually used for heat exchanging, ie, different media (liquid or gas) inside and outside of the tube are to carry out heat exchanging. So the tube coil must be strong enough to withstand a certain high pressure and high temperature. And so the quality of tube coil is very important.
Our quality control are mainly making process control and finished coil quality control. In the making process, flaring tests are regularly carried out, the tube is expanded by more than 20%, and no cracks shall be happen. For finished tube coil, air tightness tests are carried out at requested pressure, no leakage allowed.