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GB/T 19812.1-2017: Plastic equipment for water saving irrigation -- Part 1: Drip tape with labyrinth on one side
Status: Valid GB/T 19812.1: Evolution and historical versions
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| GB/T 19812.1-2017 | English | 299 |
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Plastic equipment for water saving irrigation -- Part 1: Drip tape with labyrinth on one side
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GB/T 19812.1-2017
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| GB/T 19812.1-2005 | English | 439 |
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Plastic equipment for water saving irrigation -- Part 1: Drip tape with labyrinth on one side
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GB/T 19812.1-2005
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Basic data | Standard ID | GB/T 19812.1-2017 (GB/T19812.1-2017) | | Description (Translated English) | Plastic equipment for water saving irrigation -- Part 1: Drip tape with labyrinth on one side | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G33 | | Classification of International Standard | 23.040.20 | | Word Count Estimation | 15,115 | | Date of Issue | 2017-11-01 | | Date of Implementation | 2018-05-01 | | Older Standard (superseded by this standard) | GB/T 19812.1-2005 | | Regulation (derived from) | National Standard Announcement 2017 No. 29 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 19812.1-2017: Plastic equipment for water saving irrigation -- Part 1: Drip tape with labyrinth on one side
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Plastic equipment for water saving irrigation-Part 1. Drip tape with labyrinth on one side
ICS 23.040.20
G33
National Standards of People's Republic of China
Replacing GB/T 19812.1-2005
Plastic water-saving irrigation equipment
Part 1. Single wing labyrinth drip tape
Part 1.Driptapewithlabyrinthononeside
Posted.2017-11-01
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 19812 "plastic water-saving irrigation equipment" is divided into five parts.
--- Part 1. Single-wing labyrinth drip tape;
--- Part 2. Pressure compensated dripper and drip irrigation pipe;
--- Part 3. Inlaid drip irrigation and drip tape;
--- Part 4. Polyethylene (PE) branch pipe;
--- Part 5. Buried drip pipe.
This section GB/T 19812 Part 1.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section instead of GB/T 19812.1-2005 "plastic water-saving irrigation equipment single-wing labyrinth drip tape" and GB/T 19812.1-
2005, except for editorial changes outside the main technical changes are as follows.
--- The standard name was changed to "plastic water-saving irrigation equipment Part 1. Single-wing labyrinth drip tape";
--- Removed the last paragraph of "scope" "This section does not apply to other types of drip tape." (See Chapter 1,.2005 edition of the
1 chapter);
--- Normative references added GB/T 2918-1998, GB/T 18251-2000, GB/T 19278-2003,
GB/T 19466.6-2009, SL571-2013 (see Chapter 2);
--- Removed the term "flow index", an increase of "rated working pressure" "nominal diameter" "nominal wall thickness" of the definition (see Chapter 3,
2005 edition Chapter 3);
--- Removed the "classification" chapter (see the.2005 edition of Chapter 4);
--- "Marking" chapter added "wall thickness" of the marking requirements, "Specifications. Nominal diameter (mm) × nominal wall thickness (mm) × Drip hole between
(Mm) "(see Chapter 4, Chapter 5 of the.2005 edition);
--- "Material" added an added "manufacturing drip tapes should be made of polyethylene" "Do not use medical waste and toxic and harmful
Recycled material produced by chemical packaging "" According to this part of polyethylene tape used in the production of raw materials can be added from the field
Recycled recycled polyethylene tapes produced in accordance with this standard shall have the properties specified in this section,
A "and other requirements (see 5.1, 5.4, 5.6);
--- Increased nominal wall thickness of "0.14mm" "0.30mm" and "0.40mm" three specifications (see 6.3.2,.2005 edition 7.2.2);
--- Modify "C" value and "Cv" value in "Flow Uniformity" requirement, "C" is changed to "Average flow q relative to rated flow qn
(C) shall be within ± 7% "and" Cv "shall be amended to" shall not exceed 7% "(see 6.4. 7.3 of.2005);
--- Modify "the relationship between flow and inlet pressure" in the "Rq", revised to "the average flow curve of the flow rate relative to
The rate of deviation (Rq) of the flow rate obtained from the plant curve should be within ± 7% "(see 6.5,.2005 edition
7.4);
--- Modify the "pull-resistant performance" in the load, revised to "should be able to withstand the required load" (see 6.9,.2005 version 7.8);
--- Modify the "carbon black content" index value, revised to "(2.25 ± 0.50)%" (see 6.10,.2005 edition of 7.10);
--- Increased the sample conditioning requirements "at a temperature of (23 ± 2) ℃ under the conditions of conditioning at least 24h." (See 7.2);
--- Modify the "flow and the relationship between inlet pressure" test method (see 8.5,.2005 version 8.6);
--- "Anti-sediment clogging performance" test method to increase the requirements of Table 4 on the sediment grading (see 8.6);
--- Pull-resistant performance test method adds Table 5, the test load is loaded by the nominal wall thickness of the product were classified
(See 8.9);
--- Modify the "batch" program, revised to "each batch of 5,000 volumes"; seven days production was revised to "less than 5,000 volumes" (see 9.1,
2005 version 9.1);
--- Increase the "sampling plan" in the batch number N and the sample size n (see 9.2.2);
--- Modify the "type test" period, revised to "two years" (see 9.3,.2005 edition 9.3);
--- Increasing the "type test" decision rules (see 9.4.2);
--- Added an informative appendix "Polyethylene recycling materials performance" (see Appendix A).
Please note that some of the contents of this document may involve patents. The issuing agencies of this document do not bear the responsibility of identifying these patents.
This part is proposed by China National Light Industry Council.
This part of the National Plastics Standardization Technical Committee (SAC/TC48) centralized.
This part of the drafting unit. Xinjiang Tianye Co., Ltd., China Institute of Water Resources and Hydropower Research, Dayu Water Group Co., Ltd.,
Jilin Xi Feng Water Saving Technology Co., Ltd., Inner Mongolia Mu Wo gold land water-saving Engineering Equipment Co., Ltd., Gansu Ruisheng · Asia and the United States special high-tech
Agricultural Co., Ltd., Hebei Runnong Water Saving Technology Co., Ltd., Tangshan City to get rich Plastic Machinery Co., Ltd., China Plastics Processing Industry Association
Plastic water-saving equipment will be the Professional Committee, Beijing Technology and Business University.
The main drafters of this section. Chen Lin, Gao Benhu, Tian Xiaohong, Jiang Wansong, Zhang Yanqin, Deng Shengrong, Ansheng Xin, Wang Zhi Fu, Chang Jun, Xiang Aimin.
This part replaces the standards previously issued as.
--- GB/T 19812.1-2005.
Plastic water-saving irrigation equipment
Part 1. Single wing labyrinth drip tape
1 Scope
GB/T 19812 provisions of this part of the single-wing labyrinth drip tape terms and definitions, marking, materials, requirements, samples and test strips
Pieces, test methods, inspection rules, packaging signs, packaging, transport and storage.
This section applies to polyolefins as the main raw material, the use of extrusion blow molding, and the side of the vacuum mold with a drip hole and the flow was
Labyrinth-type non-multiplex drip tape (hereinafter referred to as "drip tape"), the transmission medium temperature does not exceed 45 ℃.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2828.1-2012 Sampling procedures for sampling inspection - Part 1. Sampling inspection by batch acceptance inspection by acceptance quality limit (AQL)
plan
GB/T 2918-1998 plastic sample conditioning and testing of the standard environment
GB/T 13021-1991 Polyethylene pipe and fittings - Determination of carbon black content (TG method)
Technical specifications and test methods for drippers and drip irrigation pipes for agricultural irrigation equipment GB/T 17187-2009
GB/T 18251-2000 Polyolefin pipes, fittings and mixed materials Determination of pigment or carbon black dispersion
Thermoplastics pipes, fittings and valves - Generic terminology and their definitions GB/T 19278-2003
GB/T 19466.6-2009 plastic differential scanning calorimetry (DSC) Part 6. Oxidation induction time (isothermal OIT) and oxygen
Induction of temperature (dynamic OIT) determination
Standard Test Method for Hydraulic Basic Parameters of Water Saving Irrigation Equipment
3 Terms and definitions
GB/T 17187-2009, GB/T 19278-2003 defined and the following terms and definitions apply to this document.
3.1
Single wing labyrinth driptapewithlabyrinthononeside
In a single wing with a certain distance of the eyelet, runner was labyrinth type, coil flattened strip, the flow rate changes with the inlet pressure changes
Drip irrigation tape.
3.2
Flow constant flowconstant
Proportional constant characterizing drip flow characteristics of drip irrigation.
3.3
Nominal working pressure nominalworkingpressure
The maximum allowable working pressure under design conditions, in kPa.
Note. Typically 100 kPa, or any other pressure specified in the manufacturer's instructions.
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