18-8型不锈钢炉管
18-8 type stainless furnace tube
炉管表面热强度
calorific intensity on the tube surface of heater
Tube surface heat strength
Surface heat strength of furnace tube
裂解炉管
splitting furnace tube
Cracking-furnace Tube
pyrolyzer tube
The tube of cracking furnace
cracking tube
Cracking furnace coil
炉管表面测温
Furnace tube skin temperature measurement