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GB/T 6970-2025: Testing methods for grain driers
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 6970-2025	English	279	Add to Cart	3 days [Need to translate]	Testing methods for grain driers
GB/T 6970-2007	English	259	Add to Cart	3 days [Need to translate]	Testing methods for grain driers
GB/T 6970-1986	English	RFQ	ASK	6 days [Need to translate]	Testing methods for grain dryer

GB/T 6970-2025: Testing methods for grain driers

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ICS 65.060.99 CCSB91 National Standards of the People's Republic of China Replaces GB/T 6970-2007 Grain Dryer Test Methods Published on 2025-10-05 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Performance Test 2 4.1 Test Conditions 2 4.2 Dryer Commissioning 2 4.3 Sampling 2 4.4 Sample Preparation 2 4.5 Test Procedure 3 4.6 Experimental Data Processing 5.Production Trial 5.1 Test Requirements 5 5.2 Test Content 5 5.3 Calculation of Technical and Economic Indicators 5 5.4 Reliability 6 6 Test Report 6

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 6970-2007 "Test Methods for Grain Dryers". Compared with GB/T 6970-2007, the main differences are structural adjustments and... Aside from editorial changes, the main technical changes are as follows. a) The terms "drying capacity" and "severe cracking of rice" have been removed (see 3.1 and 3.2 in the.2007 edition); b) The "Experimental Principles" section (see 4.1 in the.2007 edition) has been removed; c) Added regulations for supporting equipment, revised the requirements for raw rice, wheat, and corn used in the experiment, and deleted the regulations for the low calorific value of coal (see...). 4.1 (4.2 in the.2007 edition) d) The commissioning requirements for continuous grain dryers and circulating grain dryers have been modified (see 4.2, 4.3 in the.2007 edition); e) The sampling location for raw grain entering the machine has been changed, and the sampling method for measuring drying unevenness in circulating grain dryers has been changed (see...). 4.3 (4.4 in the.2007 edition) f) The requirements for determining the data of incoming raw grain samples have been changed (see 4.4, 4.5 in the.2007 edition); g) The criteria for measuring workplace dust concentration and noise have been changed, and the test procedure requirements for circulating grain dryers have been changed (see...). 4.5 (4.6 in the.2007 edition) h) The calculation and testing methods for some indicators in the experimental data processing have been changed (see 4.6, 4.7 in the.2007 version); i) The section "Productivity and Unit Heat Consumption Conversion" has been removed (see 4.8 in the.2007 edition); j) Increased reliability requirements (see 5.4); k) Added requirements for test report preparation (see 6.1). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Agricultural Machinery (SAC/TC201). This document was drafted by. Jiamusi Branch of Heilongjiang Provincial Academy of Agricultural Machinery Engineering Sciences and China Academy of Agricultural Mechanization Sciences Group. Limited Liability Company, Shandong Younia Agricultural Machinery Co., Ltd., Jiamusi Inspection and Testing Center, Hunan Nongyou Shengtai Agricultural Technology Co., Ltd. Heilongjiang Provincial Academy of Agricultural Machinery Engineering Sciences and Heilongjiang State Farms Agricultural Machinery Testing and Appraisal Station. The main drafters of this document are. Sun Peng, Ren Jiayu, Cui Xiao, Liu Rui, Yu Zhanhai, Sun Guiqin, Hou Chong, Cui Chengpeng, Li Tiehui, and Wang Lijuan. Xu Caihua, Wang Jinnan, Li Congxin, Pan Jiujun, Wang Tiexin. This document was first published in 1986, revised for the first time in.2007, and this is the second revision. Grain Dryer Test Methods

1 Scope

This document describes the performance testing methods, production testing methods, and test reports for grain dryers. This document applies to the testing of continuous grain dryers and circulating grain dryers.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 1236 Performance Test of Standardized Air Ducts for Industrial Ventilation Fans GB 5009.3 National Food Safety Standard - Determination of Moisture in Food GB/T 5490 General Rules for Inspection of Grains and Oils GB/T 5491 Sampling and Divided Sampling Methods for the Inspection of Grains and Oils GB/T 5492 Grain and Oil Inspection. Identification of Color, Odor, and Taste of Grains and Oils GB/T 5506.2 Wheat and wheat flour gluten content – Part 2.Instrumental determination of wet gluten and gluten index GB/T 5510 Grain and Oil Inspection - Determination of Fatty Acid Values of Cereals and Their Products GB/T 5667-2008 Agricultural Machinery Production Test Methods GB/T 10595 Belt Conveyors GB 13271-2014 Emission Standard of Air Pollutants for Boilers GB/T 14095 Technical Terminology for Drying Agricultural Products GB/T 16157 Determination of particulate matter and sampling methods for gaseous pollutants in exhaust gas from stationary sources GB/T 19839 General Technical Requirements for Industrial Oil and Gas Burners GB/T 21015-2023 Technical Specification for Rice Drying GB/T 21016-2023 Technical Specification for Wheat Drying GB/T 21017-2021 Technical Specification for Corn Drying GB/T 37519 Bucket Elevator for Grain and Oil Machinery GBZ /T 189.8 Measurement of physical factors in the workplace - Part 8.Noise GBZ /T 192.1 Determination of dust in workplace air – Part 1.Total dust concentration JB/T 14868 Biomass Pellet Hot Blast Furnace NB/T 10156 General Technical Specification for Air Source Heat Pump Drying Units SN/T 0800.7 Inspection Method for Imperfect Grains, Oilseeds and Feed for Export

3 Terms and Definitions

The terms and definitions defined in GB/T 14095 apply to this document. ...