Current Category: CN-CJ - Urban construction
This standard specifies the terms and definitions, quality requirements, sampling and testing methods, and inspection rules for greening planting soil.
This standard is applicable to soil used for general greening planting or maintenance purposes.
This standard specifies the terms and definitions, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage for aluminum alloy case and pipe fittings of water meters.
This standard applies to all threaded connections of water meters with a diameter (DN) of less than or equal to 40 mm, and all flange connections of water meters with a diameter (DN) of more than 40 mm, as well as aluminum alloy case and pipe fittings for drinking cold water meters with a temperature rating of less than or equal to T30 and hot water meters with a temperature rating of less than or equal to T130.
This standard specifies the basic framework of the urban interconnectivity system, the technical requirements for user cards, the technical requirements for terminals, and the corresponding terms, definitions, symbols, etc. involved in the standard.
This standard is applicable to the application of interconnectivity cards for urban public utilities such as public transportation, landscape gardening, digital communities, water supply, gas supply, and heating.
This standard specifies the data clearing and settlement, data processing, data interface requirements, and communication requirements for urban public utility interconnectivity cards.
This standard is applicable to the application of data clearing and settlement for urban public utility interconnectivity cards in public transportation, landscape gardening, digital communities, water supply, gas supply, heating, and other fields.
This standard specifies the classification and marking, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of thin-walled stainless steel compression and grooved fittings (hereinafter referred to as fittings).
This standard applies to the design, manufacture, and acceptance of fittings and joints for thin-walled stainless steel pipelines used for conveying domestic water (cold water, hot water), drinking water, seawater, and gas, with a design pressure not exceeding 1.6 MPa and a nominal size not exceeding DN300.
This standard specifies the terms and definitions, symbols, classification and marking, structure and materials, specifications, requirements, test methods, inspection rules, marking, transportation, and storage of ultra-high molecular weight polyethylene steel-frame composite pipes (hereinafter referred to as "composite pipes").
This standard applies to composite pipes used for transporting media such as urban water, gas, special industrial fluids (e.g., crude oil, chemical solutions, mineral slurry, industrial wastewater, solid powders, low-temperature liquids), etc.
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.
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.
This standard specifies the terms and definitions, model compilation, materials, structure and dimensions, performance requirements, test methods, inspection rules, marking, packaging, transportation, storage, and installation of prefabricated double-layer stainless steel flues and chimneys.
This standard applies to prefabricated double-layer stainless steel chimneys made of stainless steel plates with a thickness of 0.6 mm to 1.5 mm, manufactured in factories and assembled at the site of use. Prefabricated double-layer stainless steel chimneys are used in public buildings for fuel and gas boilers, direct-fired lithium bromide absorption air-conditioning units, diesel generators, and kitchen exhaust systems. They are designed for long-term continuous use at temperatures below 450 ℃ and short-term intermittent use at temperatures below 550 ℃, and are used for the transportation and discharge of waste gas and smoke containing condensed liquid.
This standard specifies the product classification, specifications, applications, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of high-density polyethylene sheathing materials for bridge cables.
This standard applies to high-density polyethylene sheathing plastics for bridge stay cables and suspension ropes, which are made from high-density polyethylene resin as the main raw material, with the addition of modifiers, antioxidants, light stabilizers, carbon black or pigments, and other additives, and then processed through mixing, plasticizing, and granulation. Other types of cable sheathing plastics for cable structures can be used as reference.
This standard specifies the product types and classifications, requirements, inspection methods, inspection rules, and markings, packaging, transportation, and storage of disc aerators.
This standard applies to disc aerators used to aerate the water in oxidation ditch tanks.
This standard specifies the terms and definitions, product marking, structural types and parameters, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of grease separators for catering wastewater (hereinafter referred to as "grease separators").
This standard applies to the production and testing of grease separators for catering wastewater with a water treatment capacity of 1 m3/h to 54 m3/h, oil quality of animal/vegetable oil, oil content less than or equal to 300 mL/L, suspended solids (SS) concentration less than or equal to 285 mg/L, and water temperature greater than or equal to 5 ℃.