supply of synthetic rubber hose -31.5 mmsynthetic rubber hose -31.5 mm,ceramic fibre cloth covered synthetic rubber hose with woven textile to 31.5mm nominal bore to i s:5821/latest for electric arc furnace. technical specification: a) minimum outside diameter of rubber h ose 40.5mm b) no. of plies: 4 and the finishing end of the last ply shall overlap the start of the first ply at least by 6.0 mm. c) working pressure: 7 kgs/ sq. cm d) temperature: upto 90 deg centigrade, e) bursting pressure: 28 kgs/sq.cm, f) length of the hose pipe: 9 mtrs or its multiples. note: 1)ceramic fibre cloth size: minimum 2m m thickness all over. 2)material test certificate or quality of hose & test pressure shall accompany the supply. 3) hoses shall be supplied without folds and suitably packed to avoid damage during transit. [ warranty period: 30 months after the date of delivery ] => limited