烃类, 溶剂和化学品输送用热塑性多层 (非硫化) 塑料软管和软管组件. 规格

[中文适用范围]： 本文件规定了四种用于输送碳氢化合物、溶剂和化学品的热塑性多层（非硫化）软管和软管组件的要求。 根据类型，它规定孔径为 25 mm 至 300 mm，工作压力为 0,4 MPa (4 bar) 至 1,4 MPa (14 bar)，工作温度为 -30 °C 至 150 °C。 1 型软管适用于蒸汽应用。 2 至 4 型软管适用于液体应用。 注 1：关于层内壁材料的选择以及与软管和/或软管组件输送的化学品相关的内部螺旋线的任何聚合物涂层，请参见附录 A。 注 2：当考虑将聚合物涂层内线与低电导率碳氢化合物或化学品一起使用时，应咨询制造商。 本文件不适用于以下用途的软管和软管组件： ——飞机加油（参见 ISO 1825）； ——燃油分配（见 ISO 5772）； ——燃油燃烧器（见 ISO 6806）； ——液化石油气和液化天然气（见ISO 27127）； ——消防（见 ISO 14557）； ——海上液化天然气（见 EN 1474-2）； ——制冷回路。 [外文原描述]： This document specifies requirements for four types of thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies for carrying hydrocarbons, solvents and chemicals. It specifies bore sizes from 25 mm to 300 mm, working pressures from 0,4 MPa (4 bar) to 1,4 MPa (14 bar) and working temperatures from −30 °C to 150 °C, according to type. Type 1 hoses are suitable for vapour applications. Types 2 to 4 hoses are suitable for liquid applications. NOTE 1 See Annex A concerning the selection of the material for the inner wall of layers and any polymeric coating of the internal wire helix related to the chemical(s) to be conveyed by the hoses and/or hose assemblies. NOTE 2 It is intended that the manufacturer be consulted where a polymeric coated internal wire is being considered for use with low conductivity hydrocarbons or chemicals. This document does not apply to hoses and hose assemblies for: — aircraft refuelling (see ISO 1825); — fuel dispensing (see ISO 5772); — oil burners (see ISO 6806); — liquefied petroleum gas and liquefied natural gas (see ISO 27127); — fire fighting (see ISO 14557); — offshore liquefied natural gas (see EN 1474-2); — refrigeration circuits.