General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 28017-2011
Scope
This standard specifies the terminology, basic parameters of product types, technical requirements, inspection methods and rules, signs, packaging, transportation and storage of pressure-resistant metering coal feeders (hereinafter referred to as "coal feeders"). This standard also provides standardized requirements and test procedures for evaluating the metering characteristics or technical characteristics of coal feeders in a traceable manner. This standard is mainly applicable to the pulverized coal preparation system of power generation fuel boilers, which use the principle of gravity; use continuous weighing methods; quantitatively control the conveying flow of bulk materials on the conveyor belt and determine their cumulative weight; the structure is pressure-resistant Metering coal feeder products with a pressure not lower than 0.35 MPa can be referred to for quantitative feeder products with the same principle and similar structure.
GB/T 28017-2011 Referenced Document
GB 3836.2 Explosive atmospheres.Part 2:Equipment protection by flameproof enclosures "d"
GB 5226.1 Safety of machinery--Electrical equipment of machines--Part 1: General requirements*, 2019-06-04 Update
GB/T 1348 Spheroidal graphite iron castings*, 2019-12-31 Update
GB/T 191 Packaging.Pictorial marking for handling of goods
GB/T 2423.1 Environmental testing for electric and electronic products.Part 2:Test methods.Tests A:Cold
GB/T 2423.2 Environmental testing for electric and electronic products.Part 2:Test methods.Tests B:Dry heat
GB/T 2423.37-2006 Environmental testing for electric and electronic products Part 2: Test methods Test L: Dust and sand
GB/T 2423.38-2008 Environmental testing for electric and electronic products.Part2:Test methods.Test R:Water test method and guidance
GB/T 2887-2000 Specification for electronic computer field
GB/T 2970 Method for ultrasonic testing of thicker steel plates*, 2016-02-24 Update
GB/T 3323 Radiographic examination of fusion welded joints in metallic materials
GB/T 3768 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane*, 2017-12-29 Update