Type by the purpose of use Coated steel pipe for water supply Automatic clean net Valve chamber Bellows Check valve Special deformed pipes Type according to the coating method Outside Polyethylene Inside Illite liquid epoxy Liquid epoxy Polyurea Deformed pipes according to shape Straight pipe 90° curved pipe 45° curved pipe 22 1/2° curved pipe 11 1/4° curved pipe 5 5/8° curved pipe T pipe Taper pipe Fallopian pipe Drainpipe V pipe Gate valve tube A Gate valve tube 2 Flange Expansion pipe Expansion joint valve