... ISO 9001:2008 2)Size: 50mm,76mm,100mm 3)Material: PP,PE,PVC,PVDF,CPVC,RPP 4)20 years professional manufacturerInstruction ... resistant and chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC ... 6.0>6.5>7.0>6.0>8.0>10.0Technical Data for Plastic Heilex Ring Sizes(mm)Surface(m2 ...