Which specifications are applied to non-metallic pipes?
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Non-metallic pipes used for transporting hydrochloric acid do not need to comply with GB50316 since they are not metal pipes. If it is not a pressure pipeline, GBT20801 does not apply either. Are there any other guidelines I can refer to?
Steel-lined plastic pipes or pure plastic pipes? Hydrochloric acid should be handled using pipes lined with plastic; DIN 2848 covers steel flanged pipes as well as lined steel and cast iron flanged fittings. ASTM F1545 provides standard specifications for ferroalloy pipes, fittings, and flanges with plastic linings. HG 3705-2003 deals with metal mesh polytetrafluoroethylene composite pipes and fittings. HG21562 relates to pipes and fittings lined with polytetrafluoroethylene. HGT 20538-2016 outlines guidelines for selecting plastic-lined steel pipes and fittings. GB 26500-2011 specifies the general technical requirements for pipes and fittings lined with fluoroplastics
SH/T_3161-2011_Technical Specifications for Non-metallic Piping in Petrochemical Industries