How many kinds of electric threading pipe are there?
Plastic pipes1, PVC (PVC-U) plastic wire tube (hard tube)2, PE threading hose (winding hose)3 、 plastic bellows (flame retardant bellows, wire harness casing, high density bellows, high temperature protective sleeve, etc.)
Metal tubes1 、 ordinary carbon steel wire bushing (wire pipe)2, the metal flexible pipe (galvanized pipe, stainless steel pipe, plastic coated metal snakeskin snakeskin tube)
Ceramic tubes1 、 threading porcelain bushing2 、 glass fiber braided insulating sleeve
