... timber,baking paint,foodstuff,PVC,calio printing,pharmacy.The fin tubes of model SZL Series use Φ18×2.038,Φ21×2 ... the use of bimetal,the tubes of radiator has the characteristic of low thermal resistance, good heat transmission,high intensity,low ... dusted, imputrescibility durable, handsome in appearance and long life service.Heat exchanger, fin tube, aluminium fin tube, thermal oil radiator, dryer, ...