... PVC Size: 1.5'',2'',2.5'', 3'', 4'',5'', 6'',8'' Working Pressure: 2bar,3bar,4bar,6bar,8bar. 1. Hi-strength terylene yarn and qualified PVC ... synthesis materials. 2 ... and elasticity under the low-temperature water. 5. Anti-hi pressure, corrosion resistance and ageing ...