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GB/T 16984-2023 PDF English

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GB/T 16984-2023: Raw hemp
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GB/T 16984: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 16984-2023English170 Add to Cart 0-9 seconds. Auto-delivery Raw hemp Valid
GB/T 16984-2008English115 Add to Cart 0-9 seconds. Auto-delivery Raw hemp Obsolete
GB/T 16984-1997English239 Add to Cart 2 days Raw hemp Obsolete

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GB/T 16984-2023: Raw hemp

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT16984-2023
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.060.10 CCS W 30 GB/T 16984-2023 Replacing GB/T 16984-2008 Raw hemp Issued on: AUGUST 06, 2023 Implemented on: MARCH 01, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Classification... 6 5 Requirements... 6 6 Test methods... 8 7 Inspection rules... 10 8 Packaging, marking, transportation and storage... 10

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020 “Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents”. This document replaces GB/T 16984-2008 “Raw hemp”. Compared with GB/T 16984- 2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) MODIFY the classification of raw hemp (see Clause 4 of this document, 3.2 of the 2008 edition); b) ADD the relevant term and technical requirements of dew-retting hemp (see 3.5, Clause 5 of this document); c) MODIFY the grading requirements (see 5.1 of this document, 4.1.2 of the 2008 edition); d) DELETE the instruments and tools (see Clause 5 of the 2008 edition); e) MODIFY the “bundle fiber breaking strength” indicator to “breaking strength” (see 6.5 of this document, 8.3 of the 2008 edition); f) ADD the inspection rules (see Clause 7 of this document); g) DELETE the calculation of common quantities (see Clause 10 of the 2008 edition). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority of this document shall not be held responsible for identifying any or all such patent rights. This document was proposed by and shall be under the jurisdiction of National Technical Committee on Fibers of Standardization Administration of China (SAC/TC 513). Drafting organizations of this document. System Engineering Institute of Academy of Military Science, Administration for Market Regulation of Heilongjiang Province, Xi’an University of Technology, Wuhan Hanma Biotechnology Co., Ltd., Weihai Hantai Hemp Fiber Technology Co., Ltd., Binzhou Huafang Engineering Technology Research Institute Co., Ltd. Main drafters of this document. Hao Xinmin, Zhang Hua, Liang Gaoyong, Zhang Guojun, Wang Meihui, Guo Yafei, Sun Runjun, Han Li, Ma Dejian, Feng Zhen, Sun Hongyu. The previous released versions replaced by this document are as follows. Raw hemp

1 Scope

This document gives the classification of raw hemp, specifies the requirements, inspection rules, packaging, marking, transportation and storage of raw hemp, and describes the corresponding test methods. This document applies to the quality grade assessment of raw hemp.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6529 Textiles - Standard atmospheres for conditioning and testing GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9995 Determination of moisture content and moisture regain of textile - Oven- drying method GB/T 12945 Jute fiber GB/T 17345 Scutched flax

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply. 3.1 raw hemp Hemp bast used as textile raw material. 3.2 water retted hemp Hemp bast after hemp stems are water-retted, rinsed, peeled and dried. 3.3 sunned hemp Hemp bast peeled after hemp stems are dried, piled and exposed to the sun. 3.4 peeling hemp from green straw Hemp bast peeled directly after hemp is harvested. 3.5 dew-retting hemp Hemp bast made after hemp is harvested, dried in the sun, then watered by natural rainwater, peeled and stemmed. 3.6 speck Defects of raw hemp that affect its use in textiles due to pests, diseases, wind damage, mildew, etc. 3.7 foreign materials content Proportion of hemp leaves, hemp scraps, hemp roots, bast with no processing value and other impurities in raw hemp.

4 Classification

Raw hemp is classified into four categories according to the processing technology. water retted hemp, sunned hemp, peeling hemp from green straw, and dew-retting hemp.

5 Requirements

5.1 Grading requirements Grading requirements for water retted hemp are shown in Table 1, grading requirements for sunned hemp are shown in Table 2, grading requirements for peeling hemp from green straw are shown in Table 3, and grading requirements for dew-retting hemp are shown in Table 4. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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