ISO 13847:2013规定了石油、石化和天然气行业生产和检查管道运输系统管道部分中满足ISO 13623:2009或同等标准要求的环焊缝、分支焊缝和角焊缝的要求。 ISO 13847:2013适用于碳钢和低合金钢管道的焊接要求，并在附录A中包括耐腐蚀合金（CRA）和CRA包层管道的焊接指南。应用仅限于直径为20mm或更大、壁厚为3mm或更大、规定的最小屈服强度为555MPa或更小、且设计不超过ISO 13623:2009或同等标准中定义的允许等效应力的管道。它也适用于焊接到管道中的项目，如线轴、立管、发射器/接收器、配件、法兰和管道阀门的小部件。特殊焊接应用指南见: 高压焊接附件B； 阳极引线的钎焊和铝热焊接附录C； 附件D适用于在役管道上的分支和角焊。 涵盖的焊接工艺有保护金属电弧焊（SMAW）、气体保护钨极氩弧焊（GTAW）、气体保护药芯焊丝电弧焊（GSFCAW）、自保护药芯焊丝电弧焊（SSFCAW）和埋弧焊（SAW）。 ISO 13847:2013不适用于闪光环焊、电阻焊、固相焊或其他一次性焊接工艺，也不适用于管道或配件中的纵向焊缝或ISO 13623:2009范围之外的工艺管道焊接。

ISO 13847:2013 specifies requirements, for the petroleum, petrochemical and natural gas industries, for producing and inspecting girth, branch and fillet welds in the pipeline part of pipeline transportation systems which meet the requirements of ISO 13623:2009 or equivalent. ISO 13847:2013 is applicable to the requirements for welding of carbon and low-alloy steel pipes, and includes guidance for the welding of corrosion-resistant alloy (CRA) and CRA-clad pipelines in Annex A. Application is restricted to pipes with a diameter of 20 mm or more and a wall thickness of 3 mm or more, a specified minimum yield strength of 555 MPa or less, and which are designed not to exceed permissible equivalent stresses as defined in ISO 13623:2009 or equivalent. It is also applicable to welding into pipelines of items such as spools, risers, launchers/receivers, fittings, flanges and pup pieces to pipeline valves. Guidance for special welding applications is provided in:

• Annex B for hyperbaric welding;
• Annex C for brazing and aluminothermic welding of anode leads;
• Annex D for branch and fillet welding on in-service pipelines.

The welding processes covered are shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), gas-shielded flux-cored arc welding (GSFCAW), self-shielded flux-cored arc welding (SSFCAW) and submerged arc welding (SAW). ISO 13847:2013 is not applicable to flash girth welding, resistance welding, solid-phase welding or other one-shot welding processes, nor to longitudinal welds in pipe or fittings or to the welding of process piping outside the scope of ISO 13623:2009.