GB/T 19812.4-2018Plastic equipment for water saving irrigation—Part 4: Polyethylene (PE) flexible pipe (English PDF)

Foreword

GB/T 19812 "plastic water-saving irrigation equipment" is divided into five parts.

--- Part 1. Single-wing labyrinth drip irrigation belt;

--- Part 2. Pressure-compensated dripper and drip irrigation pipe;

--- Part 3. In-line drip irrigation pipe and drip irrigation belt;

---Part 4. Polyethylene (PE) hoses;

--- Part 5. Buried drip irrigation pipe. This part is the fourth part of GB/T 19812.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB/T 19812 specifies the terms and definitions, markings, materials, etc. for polyethylene (PE) hoses for irrigation (hereinafter referred to as hoses). Requirements, test methods, inspection rules, marking, packaging, transportation and storage.

This part is applicable to irrigation polyethylene (PE) hoses with a nominal pressure of 0.25MPa and 0.15MPa and below. The temperature of the conveying medium is not exceeded. Over 45 °C.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2828.1-2012. Sampling procedures for counting sampling - Part 1. Quantitative inspection by batches plan

GB/T 2918-2018 Standard environment for condition adjustment and test of plastic samples

GB/T 6111-2018 Determination of internal pressure resistance of thermoplastic piping systems for fluid transport

Plastics -- Determination of tensile properties of thermoplastic pipes - Part 3. Polyolefin pipes

GB/T 9573-2013 Rubber and plastic hoses and hose assemblies - Determination of hose size and length of hose assemblies

GB/T 13021-1991 Determination of carbon black content of polyethylene pipes and fittings (thermal weight loss method)

GB/T 15560-1995 Hydraulic instantaneous bursting and pressure test method for plastic pipes for fluid transportation

GB/T 15819-2006 Test method for environmental stress cracking sensitivity caused by plugged pipe fittings for polyethylene (PE) pipes for irrigation Legal and technical requirements

GB/T 19278-2018 General terms and definitions for thermoplastic pipes, fittings and valves

GB/T 19466.6-2009 Plastic Differential Scanning Calorimetry (DSC) Part 6. Oxidation induction time (isothermal OIT) and oxygen Determination of induced temperature (dynamic OIT)

3 Terms and definitions

The terms and definitions defined in GB/T 19278-2018 apply to this document.

4 Mark

Polyethylene (PE) hose markings should include the following.

a) Product features. RG is expressed as a polyethylene (PE) hose;

b) Specifications Model. nominal outer diameter (mm) × nominal wall thickness (mm) - nominal pressure (MPa). The markup is as follows. […]