supply of complete set of brazing , complete set of brazing for lhb coaches air conditioning maintenance consist of :- (i) brazing torch (is: 7653/1975 or latest) - 01 no. (ii) double gauge oxygen pressure regulator (is: 6901/1988 or latest )- 01 no. (iii) double gauge da pressure regulator (is: 6901/1988 or latest) - 01 no. (iv) rubber hose pipe re d and blue each 20 meter long (is: 447/1988 or latest). (v) portable heavy duty trolley (carrying capacity 3 00-350 kg) with wheel with double ball bearings and length of the handle: 85-100 cm. main chassis made out of ms angle suitable for carrying filled oxygen and da gas cylinder both at a time (gas capacity 7 cum each cylinder).- 01 no. [ warranty period: 30 months after the date of delivery ] ]