A: Chuanli cold room electric defrost tube is made of high-quality stainless steel sheath tube and high-temperature resistance alloy heating wire, filled with high purity magnesium oxide powder for insulation, with stable heating performance and good moisture resistance in cold room low temperature and high humidity environment, and we support material inspection. The outer sheath uses SUS304 stainless steel as standard option, SUS316L stainless steel is available for anti-corrosion customized requirement. SUS304 stainless steel has good anti-rust performance for ordinary cold room environment, resist frost water and humid air inside evaporator. SUS316L is selected for cold storage with weak corrosive gas, such as seafood cold room, to improve corrosion resistance and extend service life. The internal heating wire is nickel-chromium alloy wire, which has stable resistance and long service life under cyclic heating and cooling in repeated defrost cycles. High purity magnesium oxide powder filled between heating wire and metal sheath has excellent insulation and thermal conductivity, transfer heat quickly and prevent electric leakage. The terminal sealing part adopts high temperature silicone sealant to prevent moisture and frost water penetrating into tube inside, which is critical for cold room evaporator working environment with frequent frost and melting water. Poor quality defrost tubes use low grade iron tube or impure magnesium oxide powder, which easily cause electric leakage, burnout and short circuit. We can provide material composition test report for customers. Our technical team can recommend suitable sheath material according to your cold room environment, humidity and corrosive condition.
Q: What material is the electric defrost tube made of?
A: Chuanli cold room electric defrost tube is made of high-quality stainless steel sheath tube and high-temperature resistance alloy heating wire, filled with high purity magnesium oxide powder for insulation, with stable heating performance and good moisture resistance in cold room low temperature and high humidity environment, and we support material inspection. The outer sheath uses SUS304 stainless steel as standard option, SUS316L stainless steel is available for anti-corrosion customized requirement. SUS304 stainless steel has good anti-rust performance for ordinary cold room environment, resist frost water and humid air inside evaporator. SUS316L is selected for cold storage with weak corrosive gas, such as seafood cold room, to improve corrosion resistance and extend service life. The internal heating wire is nickel-chromium alloy wire, which has stable resistance and long service life under cyclic heating and cooling in repeated defrost cycles. High purity magnesium oxide powder filled between heating wire and metal sheath has excellent insulation and thermal conductivity, transfer heat quickly and prevent electric leakage. The terminal sealing part adopts high temperature silicone sealant to prevent moisture and frost water penetrating into tube inside, which is critical for cold room evaporator working environment with frequent frost and melting water. Poor quality defrost tubes use low grade iron tube or impure magnesium oxide powder, which easily cause electric leakage, burnout and short circuit. We can provide material composition test report for customers. Our technical team can recommend suitable sheath material according to your cold room environment, humidity and corrosive condition.
