DELLOK Extruded bimetal refrigeration fin tube , A210 Gr A1 / C SMLS carbon tube
DELLOK 10# 20# 16Mn 20G 12Cr1MoVG H Fin / HH Fin Welded Heat Exchanger Tubes
DELLOK Continuous helical welded heat exchanger fin fube SA213-TP304H NPS 2'' X SCH80S
DELLOK OD1.5'' A192 seamless Heat Exchanger Fin Tube For boiler / air cooler
DELLOK Welded Heat Exchanger Fin Tube 10# 20# 16Mn 20G 12Cr1MoVG 'H Fin' ’HH Fin'