TECHNICAL MANUAL - Sharq.biz

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loading, unloading and handlingIf the loading and unloading from the truck and generally the handling are doneusing a crane or the arm of a digging machine, the pipes must be lifted in thecenter with a special equipment.If these operations are carried out manually, the pipes cannot be dragged on theedges of the truck or anyway on tough and sharp objects.piling-upDuring piling-up, the support plane must be flat, free of harshness and sharpenedstones.The piling-up for the pipes in bars cannot be higher than 1,5 m for every diameterand thickness. The coiled pipes must be horizontally laid; the piling-up canno behigher than 2 m.Only for pipes bigger than 500 mm, it is advisable to internally reinforce theirends in order to avoid excessive ovalizations.After piling-up, check that the protection caps are positioned on the relative pipeends in order to prevent that leaves, dust or small animals can enter the pipes.64
uttfusion fittingsThese items are generally supplied inside proper packings. If loose, it is necessaryto avoid a confused piling-up during transport and storage in order to keep offdamages due to impacts.electrofusion fittingsThe electrofusion fittings must be always supplied inside proper packings ofresistant material, in order to protect them from dust, humidity, salt, UV ray, etc.They must be stored in warehouses on shelves or anyway over the ground.On trench sites, it is necessary to protect the electrofusion fittings from adverseagents or avoid heat sources. They must be stored inside their original packingup to final use.65
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The content of this manual is updat
Page 7 and 8:
tablesrelationship between SDR, ser
Page 9:
pipe/fitting dimensionsUNI EN 12201
Page 12:
training courseswelders classificat
Page 15 and 16: standard referencesThe references g
Page 17 and 18: CIGTransport and supply of gas - Pi
Page 19 and 20: jointing systemsThe most important
Page 21 and 22: transition systemsThe metal/PE fitt
Page 23 and 24: uttfusion jointing“Welding with h
Page 25 and 26: external nominal diameter[d n ]cont
Page 27 and 28: welding cycle at single pressureY(P
Page 30: phase 3removal of the heating plate
Page 33 and 34: synoptic tablephases and parameters
Page 35 and 36: phase 1hauling and pre-heatingPosit
Page 37 and 38: synoptic tablephases and parameters
Page 39: automatic buttfusion machinesThe st
Page 42 and 43: Visually check that the pipes are f
Page 44 and 45: cleaningJust before the jointing wi
Page 46 and 47: weldingConnect the plugs of the con
Page 48 and 49: scrapingClean the pipe from dust, d
Page 50 and 51: coolingThe cooling time of the join
Page 52 and 53: automatic reading systemsof the wel
Page 54 and 55: polyvalent ef unitThe electrofusion
Page 56 and 57: ancillary equipmentaligning clamp
Page 59 and 60: inspection of weldedjointingsEither
Page 61 and 62: electrofusion welding UNI 10521visu
Page 63 and 64: uncorrect pipe cutuncorrect pipe cu
Page 65: transport and storageThe guidelines
Page 70 and 71: The laying of polyethylene pipes ou
Page 72 and 73: water pipelinesThe reference standa
Page 74 and 75: gas and water pipeline layingThe in
Page 76 and 77: signalsIt is necessary to lay over
Page 78 and 79: gas installation for domestic usesu
Page 80 and 81: testing procedureThe testing proced
Page 82: Edition September 2010
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TECHNICAL MANUAL - Sharq.biz

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