The capillary tube is made of copper tube, the length is 1~6m, and the inner diameter is 0.5~2mm. The combination of length and diameter can meet the requirements of different working conditions and different refrigeration capacity of the refrigerant device.

The stainless steel tube is an iron-based alloy containing chromium, nickel, and often molybdenum. It only needs to meet a series of requirements and has a certain level of corrosion resistance. Common stainless steel pipe classification: stainless steel pipe, sheet, round steel, angle steel, profiles, etc.