Non-metallic pipes

Non-metallic pipes? Which one? CPVC water pipes? Glass fiber reinforced plastic, glass fiber pipe? Glass tube?

Different materials have different standards, just like steel pipes, which come in many different standards. Check what materials are used, and then look up the relevant standards; this is different from steel pipes, as different materials have different wall thickness specifications. HG-T21562-1994: Steel pipes and fittings lined with polytetrafluoroethylene; HG/T 21636—1987: Fiberglass/reinforced plastic (FRP/PVC) composite pipes and fittings; HG-T 21633-1991: Glass fiber reinforced plastic pipes and fittings; HG/T 21561—1994: Acrylonitrile-butadiene-styrene (ABS) pipes and fittings; HG-T 20520-1992: Design specifications for fiberglass-reinforced plastic/polyvinyl chloride (FRP-PVC) composite pipes; HG-T 2437-2006: Plastic-lined composite steel pipes and fittings; GB_20207.1-2006-T: Acrylonitrile-butadiene-styrene (ABS) pressure piping systems – Part 1: Pipes; GBT 10002.1-2006: Rigid polyvinyl chloride (PVC-U) pipes for water supply; GB-T 13663-2000: Polyethylene (PE) pipes for water supply; GB-T 18993.2-2003: Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water – Part 2: Pipes; GB-T 19472.1: Polyethylene double-wall corrugated pipes; GBT_18998.2_2003: Chlorinated polyvinyl chloride piping systems for industrial use – Part 2: Pipes; GBT13663.2-2005: Polyethylene (PE) piping systems for water supply – Part 2: Fittings; HG-T 3690-2001: Polyethylene composite pipes with steel reinforcement for industrial use; GB-T18742.1-2002: Polypropylene piping systems for hot and cold water

The question is It’s inexplicable; no information about the material is given