1, material: UHMWPE molecular weight: 2.5-5million 2, Usage: sand and gravel dredging project, 3,plastic tube 4,MOQ: ... dredging project:A: rubber joint, because the UHMWPE dredging pipe is not flexible, in the turning of the project, you need rubber jointsB: If ... the dredging project on the sea, you also need HDPE ...