CJ/T 445-2014
Pipes and joints made of oriented unplasticized poly (vinyl chloride) (PVC-O)for the conveyance of water under pressure (English Version)

Standard No.

CJ/T 445-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

Professional Standard - Urban Construction

Latest

CJ/T 445-2014

Scope

This standard stipulates that the application scope of PVC-O pipes and connectors is the main and branch pipelines of buried and surface pressurized water transmission systems and irrigation systems without direct sunlight exposure. According to this standard, the pipeline system mainly refers to the transportation of pressure-bearing cold water with a temperature not higher than 45 ℃, including drinking water and water with general requirements. It can also be used in some special fields, such as: occasions with impact loads and pressure fluctuations. The pressure level does not exceed 2.5 MPa. Pipe fittings produced from other materials involved in this standard shall not only comply with the provisions of this standard, but also shall comply with the current standards of the corresponding countries.

CJ/T 445-2014 Referenced Document

• GB/T 10002.2-2003 Fittings made of unplasticized poly(vinyl chloride)(PVC-U)for water supply
• GB/T 10798 Table of universal wall thickness of thermoplastics pipe
• GB/T 13295 Amendment No. 1 for ductile iron pipes, fittings and accessories for water and gas
• GB/T 14152 Thermoplastics pipes-Determination of resistance to external blows-Round-the-clock method
• GB/T 1633 Plastics--Thermoplastic materials--Determination of vicat softening temperature(VST)
• GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
• GB/T 18252-2008 Plastics piping and ducting systems.Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation
• GB/T 18475 Thermoplastics materials for pipes and fittings for pressure applications classification and designation--Overall Service(design) coefficient
• GB/T 19471.1 Plastic piping system rigid polyvinyl chloride (PVC-U) pipe elastic sealing ring type socket joint deflection sealing test method
• GB/T 19471.2 Plastics piping systems-Elastomeric-sealing-ring-type socket joints of unplasticized poly(vinyl chloride)(PVC-U)for use with PVC-U pipes-Test method for leaktightness under negative pressure
• GB/T 21300 Plastics pipes and fittings-Determination of opacity
• GB/T 21873 Rubber seals.Joint rings for water supply,drainage and sewerage pipelines.Specification for materials
• GB/T 321-2005 Preferred numbers-Series of preferred numbers
• GB/T 3401 Determination of the viscosity of Poly(vinyl chloride)resins in dilute solution using capillary viscometers
• GB/T 4217 Thermoplastics pipes for the conveyance of fluids.Nominal outside diameters and nominal pressures
• GB/T 6111 Thermoplastics piping systems for the conveyance of fluids.Determination of the resistance to internal pressure*， 2018-03-15 Update
• GB/T 8804.2-2003 Thermoplastic pipes--Determination of tensile properties--Part 2: Pipes made of unplasticized poly(vinyl chloride)(PVC-U),chlorinated poly(vinyl chloride)(PVC-C)and high-impact poly(vinyl chloride)(PVC-HI)
• GB/T 8806 Plastics piping systems.Plastics components.Determination of dimensions
• GB/T 9647 Determination of Ring Stiffness of Thermoplastic Pipes*， 2016-07-01 Update
• ISO 1 Geometrical product specifications (GPS) — Standard reference temperature for the specification of geometrical and dimensional properties*， 2022-06-14 Update
• ISO 11922-1 Thermoplastics pipes for the conveyance of fluids - Dimensions and tolerances - Part 1: Metric series*， 2017-12-31 Update
• ISO 13783 Plastics piping systems - Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing double-socket joints - Test method for leaktightness and strength while subjected to bending and internal pressure

CJ/T 445-2014 history

• 2014 CJ/T 445-2014 Pipes and joints made of oriented unplasticized poly (vinyl chloride) (PVC-O)for the conveyance of water under pressure