Not steel flanges, plastic, PVC
GB/T (13663.2-2005) polyethylene (PE) piping systems for water supply - Part second: fittingsHG20539-92 reinforced polypropylene (FRPP) pipes and fittingsGB15558.2 - 1995 buried PE pipe for gasGB/T10002.2 unplasticized polyvinyl chloride pipe fittings for water supplyGB/T10002.1 unplasticized polyvinyl chloride (PVC-U) pipe for water supply
CJT272-2008 impact resistant poly (vinyl chloride) (PVC-M) pipes and fittings for water supplyThis standard is established, according to the national standard GB/T 10002.1-2006 "unplasticized polyvinyl chloride (PVC-U) pipes", 10002.2-2003 "GB/T unplasticized polyvinyl chloride (PVC-U) pipe", also refer to the Australia / New Zealand national standard AS/N:S 4765:2000 "modified polyvinyl chloride pressure pipe (PVC-M)" SANS 966-2:2006 ", South Africa's standard pressure the second part: the standard pipe system of modified polyvinyl chloride (PVC-M) pressure piping system", the British standard BS PAS 27-1999 "pressure water with a hard polyvinyl chloride (PVC-A) alloy pipe and elbow".This standard is proposed by the Ministry of construction standard quota research institute.This standard is standardized by the standardization and Technical Committee of water supply and drainage products of Ministry of constructionAlso found that some of the national water supply pipeline series in accordance with national standards GB/T10002.1-1996 and GB10002.2-88 standards of production, I myself mixed up, the landlord himself to watch it
The GB T9119-2000 plane, raised face plate welding steel pipe flangesGB/T 2506-2005 marine welding flanges
