ISO 3821:2019 气焊设备 焊接、切割及相关工艺用橡胶软管

标准编号：ISO 3821:2019

中文名称：气焊设备 焊接、切割及相关工艺用橡胶软管

英文名称：Gas welding equipment — Rubber hoses for welding, cutting and allied processes

发布日期：2019-08

标准范围

本文件规定了焊接、切割和相关工艺用橡胶软管（包括双软管）的要求。本文件规定了正常工作压力为2 MPa（20 bar）和轻型橡胶软管的要求[限于最大工作压力为1 MPa（10 bar）且孔径小于等于6.3 mm的软管]。本文件适用于在-20°C至+60°C温度下操作的软管，并用于:-气焊和切割；-惰性气体或活性气体保护下的电弧焊；-与焊接和切割相关的工艺，尤其是加热、钎焊和金属化。本文件未规定软管组件的要求；这些在ISO 8207中有详细说明。本文件既不适用于热塑性塑料软管，也不适用于用于高压[>；0.15 MPa（>；1.5 bar）]乙炔的软管。

This document specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes.

This document specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm].

This document applies to hoses operated at temperatures？20 °C to +60 °C and used in:

— gas welding and cutting;

— arc welding under the protection of an inert or active gas;

— processes allied to welding and cutting, in particular, heating, brazing, and metallization.

This document does not specify requirements for hose assemblies; these are detailed in ISO 8207.

This document applies neither to thermoplastics hoses nor to hoses used for high pressure [>0,15 MPa (>1,5 bar)] acetylene.

标准预览图