、气焊割管。。;钢管弯制或安装前应将管口及管内杂物清扫干净,并除去毛刺。Existseriouscorrosionconduitisnotallowedused;,并保证切割面平整且不倾斜;切割后必须立即将管口毛刺打磨干净,并打磨管口成喇叭型。Cuttingfortheconduitadoptinginmanualsawormachine,andensurethecuttingsurfacesmoothandnottilt;burringaftercuttingmustbeimmediately,≥10D(电缆管外径);弯曲角度≥90°,并尽可能减少90°弯头;电缆管弯制不得出现明显的凹瘪、裂纹、折皱,钢管弯扁程度≤(电缆管外径)。BendingradiusR≥10D(hereDisconduitoutdiameter);BendingAngle≥90°,andaslessaspossiblethe90°elbow;conduitbendingcannotappearobviousconcave,crack,wrinkle,flatsteeltubebendingflatlevel≤(hereDisconduitoutdiameter).,每根电缆管弯头数量不得超过3个,90°弯头不得超过2个(埋管长度≥12米,不得多于2个弯头;12米≥埋管长度≥8米,不得多于3个弯头;直管埋设不得大于30米)超过上述标准须增加转接盒。Wheninstallationconduit,theamountofeachconduitelbowshallnotexceed3,elbowwith90°shallnotbemorethan2;theconduitlength≥12m,shallnotbemorethantwoelbow;Thelengthoftheconduitthatchangedbetween8mand12m,shallnotbemorethanthreeelbow;straightshallnotbemorethan30meters;,必须采用短套管;套管长度≥50mm;whenconduitconnectionashortsocketmustbeused,andnobuttwelding
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