... material: UHMWPE molecular weight: 2.5-5million 2, Usage: sand and gravel dredging project, 3,plastic tube 4,MOQ:50m Name: Price of ... rusty, too weight to moveHDPE pipe: with low price, light weight, never get rusty, but low ... dredging pipe is not flexible, in the turning of the project, you need rubber jointsB: If ... pipe is not flexible, Thus in the turning of the dredging project, we need rubber joints ...