石油化工管式炉高合金炉管焊接工程技术条件(附条文说明)
Technical specification for welding high alloy tube of tubular heater in petrochemical industry
2018-07-04
SH/T 3085-2016
石油化工管式炉碳钢和铬钼钢炉管焊接技术条件(附条文说明)
Technical specification for welding of carbon steel and chrome-molybdenum alloy steel tube of tubular heater in petrochemical industry