Metal hoses are usually made of stainless steel, copper and iron. Stainless steel pressure resistant metal hose is usually made of 304 or 301 stainless steel, with good softness, corrosion resistance, high temperature resistance, wear resistance and tensile resistance. The plastic-coated metal hose is coated with a layer of PVC material on the tube wall of the stainless steel or galvanized metal hose, which has the characteristics of waterproof, good insulation and strong tensile resistance.