supply of welding hose with fluted cover for oxygenwelding hose with fluted cover for oxygen,welding hose with fluted cover for oxygen (blue colour) of 8 mm bore, co nforming to spec. is 447/88 (minimum length 30 meters)with following parameters. the h ose shall be indelibly marked with isi standard mark, manufacturers trade mark, hose dimension and month and year of manufacture.1)lining tensile strength (min) : 5 mpa2)c over tensile strength (min) : 7 mpa3)lining elongation at break (min) : 200%4)cover elon gation at break (min) : 300%5)bursting pressure (min) : 5.0 mpa6)increase in outside diame ter at working pressure:-5 to +15 percent maximum7) no leakage or other sign of weak ness shall be observed at a hydrostatic test pressure of 2.5 mpa for one minute. [ warr anty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] => limited