标准摘要
[中文适用范围]： 本文件适用于钢上使用一根焊丝进行埋弧焊（根据 ISO 4063 的工艺 121）的接头准备类型。本文件仅涵盖符合 ISO 6947 的焊接位置 PA 和 PB。如果使用 PC，则需要进行特殊准备。本文件适用于全熔透焊缝。对于部分熔透焊缝，如果相关应用标准中有规定或有关各方同意，接头准备类型、形状和尺寸可以与列出的建议不同。 [外文原描述]： This document applies to types of joint preparation for submerged arc welding with one wire electrode (process 121 according to ISO 4063) on steel. This document covers only the welding positions PA and PB according to ISO 6947. If PC is used, special preparation is necessary. This document applies to fully penetrated welds. For partly penetrated welds, types of joint preparation, shapes and dimensions can differ from the listed proposals if they are specified in the relevant application standard or agreed by the parties concerned.
英文名称Welding and allied processes — Joint preparation — Part 2: Submerged arc welding of steels