This standard specifies the material, product classification, technical requirements, test method, inspection rule, marking, packaging, transportation and storage of the fittings of steel framed polyethylene plastic pipe (hereinafter referred to as composite pipe fitting) which is molded through the injection of polyethylene (medium density or high density) thermoplastic resin and the reinforced frame made by coiling and welding the uniformly punched steel sheet.
This standard is applicable to the indoor/outdoor, overhead and buried composite pipe fittings for pressure conveyance of water and drinking water. For the medium conveyed by composite pipe fitting, its temperature for long-term usage and short-term usage of composite pipe fitting shall not exceed 70℃ and 80℃ respectively. The composite pipe fitting shall be used in conjunction with the composite pipes produced according to "Steel Framed Polyethylene Plastic Pipe" (CJ/T 123).
2. Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 912 Hot-rolled Sheets and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels
GB/T 2828 Sampling Procedures and Tables for Lot-by-lot Inspection by Attributes (Apply to Inspection of Successive Lots or Batches)
GB/T 2918 Plastics-Standard Atmospheres for Conditioning and Testing
GB/T 3682 Determination of the Melt Mass-flow Rate (MFR) and the Melt Volume-flow Rate (MVR) of Thermoplastics
GB/T 6111 Thermoplastics Pipes for the Conveyance of Fluids - Resistance to Internal Pressure - Test Method
GB/T 8806 Method for Dimension Measuring of Plastic Pipes
GB/T 11253 Cold-rolled Plain Carbon and Low Alloy Structural Steel Sheets and Strips
