文档介绍：---
中国石油天然气集 团公司企业标准
^_^
管道下向焊接工艺规程
一一发布 一一实施
---
中国石油天然气集团公司 发 布
---
目 次
前 言 ⋯ ^_^
范 围
规范性 引用文件 一
焊接材料保管及焊前处理 ·········，·······，····················································⋯⋯“‘’‘’‘”’一
焊接设 备 ·· ··································，···················· ·································· ···········⋯⋯
焊接工艺评定及焊工考核 ·············，，·，·········，········，··· ·············，，········⋯⋯
焊接 ·，·，·····‘·································，······