Application: Application for drainage water suction and discharge inagricultural,construction, mining, marine, and irrigation purposes. Conveyance of air,chemicals,fertilizer and punematic lines etc Also suitable for dust collection,vaccum cleanner,air condition Specification : standard ID: 1/2"----2-1/2" Standard lenth : 20--30m/rol Color: black , gray present , other color can customise Fittings: standard PP connector , joined with hose by welding .