Standards

CJ/T 120-2008 Replaced

CJ/T 120-2008 Coating plastic steel pipe for water supply

This standard specifies the scope, product classification and marking, materials, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of plastic-coated composite steel pipes for water supply (hereinafter referred to as plastic-coated steel pipes).
This standard applies to plastic-coated steel pipes with a nominal size not exceeding DN1200 for conveying drinking water. For plastic-coated steel pipes with a nominal size greater than DN1200 or those used to convey other fluids, this standard may be used as a reference.

Publish Date: 2008-06-03

CJ/T 282-2008 Replaced

CJ/T 282-2008 Slow closure butterfly check valve

This standard specifies the structural type, product model, requirements, inspection and test methods, inspection rules, marking, packaging, and storage and transportation of butterfly quick-closing check valves (hereinafter referred to as check valves).
This standard applies to nominal sizes of DN300 to DN2000, with a nominal pressure of no more than PN10 for sizes above DN1000, and a nominal pressure of no more than PN16 for sizes below DN1000. The medium is water or other liquids with physical and chemical properties similar to water. The check valves are installed on the outlet pipes of pumps to prevent reverse flow of the medium and the occurrence of destructive water hammer during abnormal shutdown of the pump.

Publish Date: 2008-06-03

CJ/T 283-2008 Replaced

CJ/T 283-2008 Eccentric semi-ball valve

This standard specifies the structural type, product models, requirements, inspection and test methods, inspection rules, marking, packaging, and storage and transportation of eccentric hemispheric valves (hereinafter referred to as hemispheric valves).
This standard applies to hemispheric valves with nominal sizes of DN50 to DN1 000, nominal pressures not exceeding PN16, and media such as water, slurry, or other liquids with physical and chemical properties similar to water.

Publish Date: 2008-06-03

CJ/T 273-2008 Replaced

CJ/T 273-2008 Polypropylene sound insulating pipes and fittings for drainage

This standard specifies the product classification, materials, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of polypropylene silent drainage pipes and fittings.
This standard applies to polypropylene silent drainage pipes and fittings used for cold and hot drainage in buildings. Under the consideration of the material's chemical resistance and temperature resistance, it can also be used for industrial drainage pipes.

Publish Date: 2008-04-02

CJ/T 265-2007 Replaced

CJ/T 265-2007 Non-negative pressure water supply equipment

This standard specifies the terms, classification, and model marking of non-pressure water supply equipment, as well as its requirements, test methods, inspection rules, marking, packaging, transportation, and storage.
This standard applies to all types of non-pressure water supply equipment (hereinafter referred to as "equipment") used in residential and industrial water supply systems.

Publish Date: 2007-12-21

CJ/T 270-2007 Replaced

CJ/T 270-2007 Steel reinforced spirally wound Polyethylene(PE) drainage pipe

This standard specifies the terms and definitions, symbols, codes, materials, product structures, classifications, and connection methods of plastic-steel composite strips formed by extrusion of steel strips and polyethylene (medium or high density), and plastic-steel wrapped drainage pipes made by winding and welding. It also stipulates requirements, test methods, inspection rules, marking, transportation, and storage.
This pipe is suitable for long-term conveying of media with a temperature below 45°C in projects such as buried urban drainage, industrial drainage, and agricultural drainage.

Publish Date: 2007-12-21

CJ/T 261-2007 Replaced

CJ/T 261-2007 Butterfly valves for water supply and drainage

This standard specifies the terms and definitions, structural types, product models, requirements, inspection and test methods, inspection rules, marking, packaging, transportation, and storage of butterfly valves for water supply and drainage (hereinafter referred to as butterfly valves).
This standard applies to butterfly valves for water supply and drainage with nominal sizes of DN50 to DN2600, nominal pressures of PN2.5 to PN16, and made of cast iron.

Publish Date: 2007-08-20

CJ/T 262-2007 Replaced

CJ/T 262-2007 Direct buried gate valves for water supply and drainage

This standard specifies the terms and definitions, structural types, product models, requirements, inspection methods, inspection rules, and markings, packaging, transportation, and storage of directly buried gate valves for water supply and drainage (hereinafter referred to as gate valves).
This standard applies to gate valves for water supply and drainage with a nominal size of DN50 to DN600, a nominal pressure of PN10 to PN25, and a material of ductile iron, which are directly buried underground.

Publish Date: 2007-08-20

CJ/T 263-2007 Replaced

CJ/T 263-2007 Corundum fine bubble diffuser for water and wastewater treatment

This standard specifies the terms and definitions, product classification and models, requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality assurance for microporous aerators of porous corundum aeration components (round plates, spherical shells, bell covers, and pipes).
This standard is applicable to wastewater biological treatment, source water pretreatment, and other water oxygenation applications.

Publish Date: 2007-08-20

CJ/T 264-2007 Replaced

CJ/T 264-2007 Membrane fine bubble diffuser for water and wastewater treatment

This standard specifies the terms and definitions, product classification and models, requirements, test methods, inspection rules, marking, packaging, transportation, storage, and quality assurance for disc-type, tube-type, and plate-type rubber membrane microporous aerators.
This standard is applicable to wastewater biological treatment, source water pretreatment, river water quality protection, and other water oxygenation applications.

Publish Date: 2007-08-20

CJ/T 256-2007 Replaced

CJ/T 256-2007 Pilot control pressure reducing valve

This standard specifies the terms and definitions, structural types, product models, technical characteristics requirements, inspection methods, inspection rules, marking, product manuals, packaging, storage and transportation, and other basic requirements for split pilot pressure relief and stabilization valves (hereinafter referred to as pressure relief valves).
This standard applies to pressure relief valves with a nominal pressure of less than or equal to PN2.5 MPa, a nominal diameter of less than or equal to DN800 mm, a medium of water, and a temperature not exceeding 80℃, used in water supply, air conditioning, fire protection, and other piping systems.

Publish Date: 2007-06-06

CJ/T 258-2007 Replaced

CJ/T 258-2007 Fiber reinforced polypropylene random copolymer composite pipe

This standard specifies the materials, usage conditions, product classification, selection of S-value for pipe series, requirements, hygiene requirements, test methods, inspection rules, marking, packaging, transportation, and storage of fiber-reinforced random copolymer polypropylene composite pipes (hereinafter referred to as FPPR pipes).
This standard applies to cold and hot water piping systems in buildings, including industrial and civil cold and hot water, drinking water, and heating systems, etc.
This standard does not apply to pipes used in fire extinguishing systems and systems with non-water media.

Publish Date: 2007-06-06