Standards

CJ/T 300-2008 Water hammer arrestor for water supply systems of buildings

This standard specifies the structural form, product models, requirements, test methods, inspection rules, marking, packaging, storage and transportation of water hammer absorbers for building water supply (hereinafter referred to as absorbers).
This standard applies to water hammer absorbers used in water supply pipelines with nominal sizes of DN15 to DN400, nominal pressures not exceeding PN40, and water temperatures ranging from 0°C to 70°C. It can also be used for water hammer absorbers in other water supply and distribution pipelines with the same or similar media and operating conditions.

Publish Date: 2008-12-12

CJ/T 304-2008 Technical requirement for chip operate system of CPU card in construction case

This standard specifies the electrical characteristics, logical interfaces, and transmission protocols of CPU cards in the construction industry; files and commands; application selection; security mechanisms and requirements; electronic wallet/e-purse applications; and corresponding definition symbols.
This standard applies to departments (units) involved in the design, manufacture, management, issuance, and development of card and terminal products related to IC card applications in the construction industry, as well as the development, integration, maintenance, and supervision of application systems.

Publish Date: 2008-12-12

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 209-2005 Ornamental fountain sprinklers

This standard specifies the model specifications, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of fountain nozzles (hereinafter referred to as nozzles).
This standard applies to various types of fountain nozzles. Other sprayers can also be used as a reference.

Publish Date: 2005-05-16

CJ/T 160-2002 Backflow preventers

This standard specifies the definition, requirements, and test methods for backflow preventers.
This standard applies to backflow preventers used in pipelines with a nominal pressure of 0.4 MPa to 2.5 MPa and a temperature not exceeding 80°C, transporting clean water or substances with physical and chemical properties similar to clean water, with a nominal diameter of 10 mm to 400 mm.

Publish Date: 2002-06-04

CJ 164-2002 Domestic water saving devices

Publish Date: 2002-06-03

CJ/T 163-2002 The storage type heat exchanger of guide flow type and half storage type heat exchanger(construction of U-pipe column)

This standard specifies the model marking, main structure, requirements, test methods, inspection rules, marking, painting, packaging, and transportation of diversion-type volumetric water heaters and semi-volumetric water heaters (hereinafter referred to as water heaters) using U-shaped tube bundles as heat exchange elements.
This standard applies to the design, manufacture, inspection, and testing of water heaters.

Publish Date: 2002-06-03

CJ/T 167-2002 Multi-function control valve for pumping system

Publish Date: 2002-06-03