sht 3085-2016 石油化工管式爐碳鋼和鉻鉬鋼爐管焊接技術(shù)條件

1、ICS 25. 180 P 72 備案號: J2235-2016 中華人民共和國石油化工行業(yè)標準SH/T 3085-2016 代替 SH 3085-1997 石油化工管式爐碳鋼和錯鋁鋼爐管焊接技術(shù)條件Technical specification for welding of carbon steel and chrome-molybdenum alloy steel tube of tubular heater in petroche

2、mical industry 2016-01 一 15 發(fā)布 2016-07-01 實施中華人民共和國工業(yè)和信息化部 發(fā)布SH/T 3085-2016 Contents Foreword …………………………………………………………….....………………………·…………E 1 Scope ……………..............………........……………………………………..…………………… 1 2 Normative

3、 references …………..............…………………………......……·……………….........1 3 Terms and definitions ........…….......………………………........…………..............……........1 4 島1:aterial.. ……………………·………..............………………………………………

4、…………… .14. 1 Tube and fitting.........…………………………………………………………………………………1 4. 2 Welding materials........……..........………………………………………………………………2 5 Preparation for welding......... ...............….................…………………………………

5、…..........2 6 Qualifications of welders.….........................................…………………………………..........3 7 Welding.………………………...........………………………………………………………….........3 7. 1 Environment and preparation for welding.…………

6、………………….......…...............……….3 7. 2 Alignment.…..........………………………………………………………………………..........3 7. 3 Preheating……………………………………………………………………………………………4 7. 4 Welding and heat treatment.………………………………………………………………………..4 8 Ex

7、amination.…………………………………………………………………………………..…………5 Annex A CInformative) Chemical and tensile requirements oftube..……………………………………….7 Annex B CInformative) Chemical and tensile requirements ofwelding materials.…………………………..9