... ISO9001:2000 Package:export packing,or as requirment W-type Radiant Tube1.Material:Alloy2.Process:centrifugal casting process3.Quality:ISO9001: ... (ethylene,styrene,naphtha),pyrolysis and fired heaters etc.2. Steel and Heat-treatment :radiant tubes,furnace rolls and castings of re ... -heating furnaces,steei mills and heat-treatment industries. Radiant tube is used as gas burner heater,there're W ...