Fluted G Type Fin Tube With Fin Root Thickness 0.5Mm and 0.3Mm At Tip, Asme Sa213 Tp316, 316L Stainless Steel Seamless Pipe of Pickled, Bright Annealed, Sa210 Gr. A1 Seamless Carbon Steel Rectangular Double H Welding Fin Tube for Economizer, Sa213 Tp304H Nps 2X Sch80S Helical Welded Fin Tubes for Boiler, Cooler, Aluminum and Copper Fins Are Embedded Into Smls Stainless Steel Tube of Tp304, Tp304L, Welded Perforated Longitudinal, Heat Exchangers ...