... water,weighs approximately 1/8 that of steel,the same part UHMWPE has lower price than steel,need no maintain,easy to ... machine,conventionally sawed,milled,planed and drilled,so UHMWPE has a competitive price. 3. Abrasion resistanceUHMW-PE\\\'s abrasion ... Hub for rough casting Machined hub Moulding press impeller with UHMWPE and 316 SS Material (black) Impeller (grey) COVER Casings .Casing ...