M j patel [india] ltd offers manufactures finned tubes. T-fins are finned tubes with helical straight strip wound on the tube . T-fins are and mechanically secured.
L-fins includes: helical strip bent to l-shape are mechanically secured to the tube with the outer surface of the tube totally enclosed with fins, for full fin-contact and protection of tube from chemical action of the gas for maximum tube-wall temperature of 177°c and these l-fins moderate service conditions.
G-fins includes: helical straight strip wound into pre-cut grooves on the outer wall of the tube, fin and groove lips mechanically closed for maximum tube-wall temperature of 371°c and extreme working conditions.
