CJ/T 250-2007 (English Version) PDF

Scope: This standard specifies the materials, product classifications, specifications, requirements, test methods, and inspections for extruded pipes and mold-formed or secondary-processed pipe fittings (used for sewage and wastewater discharge) using polyethylene resin as the main raw material. Rules, markings, packaging, transportation and storage. This standard applies to gravity sewage and wastewater discharge and siphon roof rainwater drainage systems in buildings. Under no-pressure conditions, the application range of fluid temperature in high-density polyethylene pipes specified in this standard is 0°C ~ 65°C, and the instantaneous drainage temperature does not exceed 95°C; the application range of ambient temperature for high-density polyethylene pipes is -40°C ~ 65℃.

CJ/T 250-2007 Referenced Document

GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*， 2013-02-15 Update
GB/T 3682 Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
GB/T 6111 Thermoplastics piping systems for the conveyance of fluids.Determination of the resistance to internal pressure*， 2018-03-15 Update
GB/T 6671 Thermoplastics pipes-Determination of longitudinal reversion
GB/T 8805 Determination of deflection for rigid plastic pipes

2019 CJ/T 250-2018 High-density polyethylene (HDPE) pipes and fittings for building drainage
2007 CJ/T 250-2007 High density polyethylene pipes and fittings for drainage inside buildings