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本标准适用于农田灌溉用的PY系列单咀摇臂式喷头(以下简称喷头)。技术要求 1.PY系列单咀摇臂式喷头应符合本标准的要求,并按经规定程序批准的图样及技术文件制造。 2.喷头性能指标应符合NJ176—79《单咀摇臂式喷头型式与基本参数》的规定。 3.主要零件的材料应符合表1的规定,允许用机械性能不低于规定的其它材料制造。
This standard applies to irrigation PY series single-arm rocker nozzle (hereinafter referred to as the nozzle). Technical requirements 1.PY series single-nozzle rocker arm nozzle shall comply with the requirements of this standard, and in accordance with the procedures approved by the drawings and technical documents manufactured. 2. Sprinkler performance indicators should be consistent with NJ176-79 “single-ended rocker nozzle type and basic parameters” requirement. 3. The main parts of the material shall comply with the provisions of Table 1, with the mechanical properties of not less than the provisions of other materials.