Ultra-high molecular weight polyethylene (UHMWPE) is a kind of engineering thermoplastics with more than 3 million viscosity-average molecular weight. It differs from PE standard grades in its very high degree of polymerization. Ultra-high molecular weight polyethylene pipe has superior performance over conventional HDPE pipe
HDPE (High Density Polyethylene): 100,000 – 400,000 MW
HMWHDPE (High Molecular Weight High Density Polyethylene) 500,000 – 1,999,999
VHMWHDPE (Very High Molecular Weight High Density Polyethylene) 2,000,000 – 3,100,000
UHMWPE (Ultra High Molecular Weight Polyethylene) > 3,100,000 + MW
The nominal pressure rating of UHMWPE pipes etc. is from 0.6 MPa to 2.0 MPa and UHMWPE composite pipe can reach 6.4 MPa.