TECHNICAL MANUAL - Sharq.biz

thickness ofwelded elements[mm]width of thebead B[mm]thickness ofwelded elements[mm]width of thebead B[mm]3 4 - 6 29 15 - 214 4 - 7 30 15 - 215 5 - 8 31 15 - 216 6 - 9 32 15 - 227 7 - 10 33 16 - 228 7 - 10 34 16 - 229 8 - 11 35 16 - 2210 8 - 12 36 16 - 2311 9 - 13 37 17 - 2312 9 - 13 38 17 - 2313 10 - 14 39 17 - 2314 10 - 15 40 17 - 2415 10 - 15 41 18 - 2416 11 - 16 42 18 - 2417 11 - 16 43 18 - 2518 12 - 17 44 19 - 2519 12 - 17 45 19 - 2520 12 - 18 46 19 - 2521 13 - 18 47 20 - 2622 13 - 18 48 20 - 2623 13 - 19 49 20 - 2624 13 - 19 50 21 - 2725 14 - 20 55 23 - 2926 14 - 20 60 26 - 3227 14 - 20 65 29 - 3628 14 - 21non perfectly connected beadIf the bead is not perfectly connected to the plain surface of the pipe, the weldingis anyway considered acceptable.In case of welding of pipes and/or fittings with thickness lower or equal to 10 mm,if the bead is not connected with the typical form at “gull wings”, the weldingcycle must be modified working on the phase 3 and 4 in the following way:• phase 3: the time t 3 cannot be higher than 4 seconds;• phase 4: the time t 4 cannot be higher than 6 seconds.non perfectly connected beadbead “at gull wings”58