supply of welding hose with fluted cover for oxygewelding hose with fluted cover for oxyge,welding hose with fluted cover for oxygen (blue colour ) of 8mm bore, con forming to spec. is 447/88 (minimum length 30 meters)with following parameters. the hos e shall be indelibly marked with isi standard mark, manufacturers trade mark, hose dim ension and month and year of manufacture.1)lining tensile strength (min) : 5 mpa2)cover tensile strength (min) : 7 mpa3)lining elongation at break (min) : 200%4)cover elongation at break (min) : 300%5)bursting pressure (min) : 5.0 mpa6)increase in outside diameter at working pressure:-5 to +15percent maximum7)no leakage or other sign of weakness sha ll be observed at a hydrostatic test pressure of 2.5 mpa for one minute. [ warranty perio d: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] => limited