Standards

DB50/ 437-2012 Abolished

DB50/ 437-2012 Energy-saving plastic windows and doors

This standard specifies the terms and definitions, product classification, naming and marking, requirements, test methods, inspection rules, labels, certificates of conformity, user manuals, packaging, transportation, and storage of energy-saving plastic doors and windows. This standard applies to energy-saving windows for building external walls and pedestrian doors that are operated manually in industrial and civil buildings, as well as energy-saving windows for vertical roofs. Energy-saving external doors and windows for non-manually operated walls, as well as vertical skylights, can be used as reference. This standard does not apply to skylights, non-vertical roof windows, roller shutter doors and windows, and revolving doors. This standard does not apply to fire-resistant doors and windows.

Publish Date: 2012-03-25

DB50/T 452-2012 Abolished

DB50/T 452-2012

This standard specifies the method for determining the total tin content in dibutyltin dilaurate by redox titration. This standard is applicable to the determination of the total tin content in dibutyltin dilaurate.

Publish Date: 2012-03-25

DB50/ 438-2012 Abolished

DB50/ 438-2012 Energy-saving aluminum alloy windows and doors

This standard specifies the terms and definitions, product classification, naming and marking, requirements, test methods, inspection rules, marking, qualification certificates, user manuals, packaging, transportation, and storage of energy-saving aluminum alloy doors and windows. This standard applies to energy-saving windows and pedestrian doors used on the exterior walls of industrial and civil buildings with manual opening and closing operations, as well as energy-saving windows on vertical roofs. Energy-saving exterior doors and windows for non-manual opening and closing operations on walls, and vertical skylights can be used as reference. This standard does not apply to skylights, non-vertical roof windows, rolling shutter doors and windows, and revolving doors. This standard does not apply to special doors and windows such as fire-resistant doors and windows, escape doors and windows, smoke exhaust windows, and radiation shielding doors and windows.

Publish Date: 2012-03-25

DB50/T 436-2012 Abolished

DB50/T 436-2012 Motorcycle and light motorbike engine powder metallurgy valve seat ring and valve guide

This standard specifies the terms and definitions, requirements, inspection methods, inspection rules, marking, packaging, transportation, and storage for powder metallurgy valve seat rings and valve guides for motorcycle and moped engines. This standard applies to single-layer and multi-layer valve seat rings and valve guides for motorcycle and moped engines. Single-layer and multi-layer valve seat rings and valve guides for general-purpose small gasoline engines and internal combustion engines made by powder metallurgy can be used as reference.

Publish Date: 2012-03-06

DB50/T 419-2011 Abolished

DB50/T 419-2011 Goat fat lamb production technical specifications

This standard specifies the terms and definitions of the technical specifications for the production of fat lambs in goats, fat lamb products, individual selection, reproduction, feeding management, disease prevention and control, and environmental control and requirements for goat farms. This standard is applicable to large-scale goat farms with more than 200 breeding ewes, and other goat farms can refer to and implement it accordingly.

Publish Date: 2012-03-01

DB50/T 420-2011 Abolished

DB50/T 420-2011 DB50/T 420-2011 Beekeeping techniques for the production of wild honey of the native bees

This standard specifies the terms and definitions of the production technology specifications for native bee raw honey, the environment of bee farms and nectar plants, the selection of beekeeping equipment, the selection of bee breeds, the routine management techniques of bee colonies, the seasonal management of bee colonies, the prevention and control of diseases and pests in native bees, and the management of honey production. This standard is applicable to bee farms in Chongqing City that produce native bee raw honey using the live frame beekeeping method.

Publish Date: 2012-03-01

DB50/ 430-2012 Abolished

DB50/ 430-2012 Unsaturated Polyester Resin Quartz (UPR-Q) Composite Surface Material

This standard specifies the requirements for unsaturated polyester resin quartz (UPR-Q) composite surface materials, including product marking, testing methods, inspection rules, packaging, labeling, transportation, and storage requirements. This standard applies to unsaturated polyester resin (UPR) as the base material, quartz sand or quartz powder as the filler, and other auxiliary agents added to it. The materials are manufactured by pressing, drying, thickness control, and polishing, and are suitable for indoor decoration.

Publish Date: 2012-02-15

DB50/T 431-2012 Abolished

DB50/T 431-2012 IC card membrane gas meter built-in motor valve technical specification

This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage for the built-in motor valves of IC card membrane gas meters with a maximum flow rate of no more than 10 m3/h. This standard applies to the production and acceptance of built-in motor valves for IC card membrane gas meters. Other gas meters with built-in motor valves may refer to and implement this standard accordingly.

Publish Date: 2012-02-15

DB50/T 427-2012 Abolished

DB50/T 427-2012 Screening of dioxins in soils, sediments, and solid waste using enzyme-linked immunosorbent assay (ELISA) method

This standard specifies the method of screening polychlorinated dibenzo-para-dioxins (PCDDS) and polychlorinated dibenzofurans (PCDFs) in soil, sediment, and solid waste (including fly ash, salt sludge, industrial waste residue, and sludge) using enzyme-linked immunosorbent assay (ELISA). This standard is applicable to the screening of dioxins in soil, sediment, and solid waste, and uses ELISA to screen for polychlorinated dibenzo-para-dioxins and polychlorinated dibenzofurans in soil, sediment, and solid waste. Through a series of simple and rapid sample processing, it facilitates screening and analysis.

Publish Date: 2012-02-15

DB50/T 432-2012 Abolished

DB50/T 432-2012 Membrane gas meter diaphragm technical specifications

This standard specifies the technical requirements, test methods, acceptance rules, and packaging, marking, transportation, and storage for diaphragms used in membrane gas meters. This standard applies to the production and acceptance of diaphragms for membrane gas meters.

Publish Date: 2012-02-15

DB50/T 425-2011 Abolished

DB50/T 425-2011 Danning River chicken

This standard specifies the terminology and definitions, physical characteristics, production performance, grade classification, and identification rules for Daininghe chickens. This standard is applicable to the identification of Daininghe chicken breeds, conservation and selection breeding, grade evaluation, and the sale of breeding chickens (chicks and eggs).

Publish Date: 2012-01-18

DB50/T 423-2011 Abolished

DB50/T 423-2011 The Specification for B-mode Ultrasonic Determination of Pigs in vivo

This standard specifies the terms and definitions for units such as pig farms and live pig trading markets when conducting live pig B-type ultrasonic diagnosis to measure live backfat thickness, live eye muscle area, and pregnancy diagnosis; the performance requirements and model selection of B-type ultrasonic diagnostic devices; the personnel responsible for the measurement; the measurement procedures and steps; the measurement data; image storage and data utilization, etc. This standard also stipulates the work of pig farms and live pig trading markets in conducting live pig B-type ultrasonic diagnosis to measure live backfat thickness, live eye muscle area, and pregnancy diagnosis.

Publish Date: 2012-01-18