GB/T 19812.4-2018 in English
VALIDPlastic equipment for water saving irrigation—Part 4:Polyethylene(PE)flexible pipe
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 19812.4-2018 |
| Document status: | VALID |
| Title in English: | Plastic equipment for water saving irrigation—Part 4:Polyethylene(PE)flexible pipe |
| Title in Chinese: | 塑料节水灌溉器材 第4部分: 聚乙烯(PE)软管 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-12-28 |
| Implemented on: | 2019-07-01 |
| ICS Classification: | 23.040.20-Plastics pipes |
| Chinese Classification: | G33-Plastic profile |
| Professional Classification: | GB-National Standard |
| Related Keywords: | material requirements polyethylene resin
plastic water-saving irrigation equipment polyethylene hose ordinary polyethylene materials efficient water-saving irrigation equipment |
| Related Topics: | save water
equipment hose material gb/t19812.4 GB/T19812.4-2018 High-quality water-saving irrigation irrigator GBT19812.4 GBT19812.4-2018 |
《GB/T 19812.4-2018塑料节水灌溉器材 第4部分: 聚乙烯（PE）软管》由TC48（全国塑料制品标准化技术委员会）归口，TC48SC3（全国塑料制品标准化技术委员会塑料管材、管件及阀门分会）执行，主管部门为中国轻工业联合会。
Introduction
In-depth interpretation of GB/T 19812.4—2018 Polyethylene (PE) hose standard
| Dimensions | Specific requirements | Technical indicators |
|---|---|---|
| Material requirements | Polyethylene resin as the main material, evenly dispersed additives can be added | Corrosion resistance, resistance to algae and bacterial growth, suitable for water temperature ≤45℃ |
| Physical and mechanical properties | Tensile yield stress ≥12MPa, elongation at break ≥350% | Resistant to hydrostatic pressure without leakage, instantaneous bursting pressure ≥2.0 times the nominal pressure |
| Specifications and dimensions | Nominal outer diameter tolerance ±0.15mm (depending on pressure level) Example: RG 63×1.2-0.25MPa | Length ≥50m, wall thickness tolerance ≤±0.15mm |
Explanation of professional terms and practical application cases
1. Marking method of polyethylene (PE) hose
According to standard requirements, the marking of polyethylene hose should include product characteristics (RG), specification model and nominal pressure. For example: RG 63×1.2-0.25MPa means a polyethylene hose with a nominal outer diameter of 63mm, a wall thickness of 1.2mm and a nominal pressure of 0.25MPa.
2. Importance of material selection
The material needs to withstand corrosion from irrigation fertilizers and pesticides and be used under conditions where the water temperature does not exceed 45°C. For example, in hot and arid areas, it is more important to select polyethylene hoses with excellent high temperature resistance.
Background of standard formulation and analysis of technological evolution
The GB/T 19812 series of standards is to regulate the production and application of plastic water-saving irrigation equipment and improve irrigation efficiency and water resource utilization benefits. This section specifically specifies the technical requirements for polyethylene (PE) hoses, reflecting the demand of modern agriculture for efficient water-saving irrigation equipment.
Technology Evolution Analysis
- From the perspective of materials, ordinary polyethylene materials used in the early days have been gradually replaced by modified materials to improve pressure resistance and anti-aging performance
- From the perspective of manufacturing technology, extrusion molding and cooling shaping technologies have been continuously optimized, significantly improving the uniformity and consistency of the hose
- In terms of testing methods, indicators such as oxidation induction time (OIT) have been introduced to more comprehensively evaluate the thermal stability of materials
Implementation Recommendations and Precautions
1. Product Selection Recommendations
- Choose appropriate nominal pressure and wall thickness according to the design requirements of the irrigation system
- Give priority to products that have passed type inspection to ensure stable product quality
- Pay attention to the environmental stress cracking performance of the hose, which is particularly important in areas prone to this problem
2. Usage and Maintenance Recommendations
- Avoid heavy pressure and severe impact to prevent physical damage
- Keep away from heat sources during storage and stack no higher than 3m
- Regularly check the appearance and connection of the hose and replace aging products in time
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