公司外部劃線分(fen)為:熱熔標(biao)線(xian)(xian)(xian)，常溫冷(leng)漆標(biao)線(xian)(xian)(xian)，彩色防滑(hua)標(biao)線(xian)(xian)(xian)，振蕩防滑(hua)反(fan)光標(biao)線(xian)(xian)(xian)和(he)預(yu)成型標(biao)線(xian)(xian)(xian)。 熱熔標(biao)線(xian)(xian)(xian)是我國道(dao)路(lu)標(biao)線(xian)(xian)(xian)上應(ying)用(yong)最廣的(de)(de)一種標(biao)線(xian)(xian)(xian)。他施工時間短(duan)，耐(nai)磨(mo)(mo)性(xing)高(gao)，造價低(di)。 道(dao)路(lu)交通(tong)標(biao)線(xian)(xian)(xian)主要劃設于道(dao)路(lu)表面，經(jing)受日曬雨淋(lin)，風雪冰凍，遭受車(che)輛(liang)的(de)(de)沖擊(ji)磨(mo)(mo)耗(hao)，因此對其(qi)性(xing)能(neng)(neng)有(you)嚴格的(de)(de)要求(qiu)。首先要求(qiu)干(gan)燥時間短(duan)，操作(zuo)簡(jian)單，以(yi)減少交通(tong)干(gan)擾(rao)；其(qi)次要求(qiu)反(fan)射能(neng)(neng)力強(qiang)，色彩鮮明，反(fan)光度強(qiang)，使白天、夜晚(wan)都(dou)有(you)良好的(de)(de)能(neng)(neng)見(jian)度；第三(san)，應(ying)具有(you)抗(kang)滑(hua)性(xing)和(he)耐(nai)磨(mo)(mo)性(xing)，以(yi)保(bao)證(zheng)行車(che)安全(quan)和(he)使用(yong)壽命。

根(gen)據圖樣和(he)技術要(yao)(yao)(yao)(yao)求(qiu)，在(zai)毛坯或半(ban)成品上用劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)工(gong)具畫出(chu)加(jia)工(gong)界(jie)線(xian)(xian)(xian)，或劃(hua)(hua)(hua)(hua)(hua)出(chu)作(zuo)(zuo)為(wei)(wei)基準的(de)(de)(de)點(dian)、線(xian)(xian)(xian)的(de)(de)(de)操作(zuo)(zuo)過(guo)程稱為(wei)(wei)劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)。劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)分為(wei)(wei)平面劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)和(he)立體劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)兩種。只需要(yao)(yao)(yao)(yao)在(zai)工(gong)件一個表(biao)面上劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)即能明確表(biao)明加(jia)工(gong)界(jie)限的(de)(de)(de)，稱之為(wei)(wei)平面劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)；需要(yao)(yao)(yao)(yao)在(zai)工(gong)件幾個互(hu)成不同角度(du)(du)（一般是互(hu)相垂直）的(de)(de)(de)表(biao)面上劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)，才(cai)能明確表(biao)明加(jia)工(gong)界(jie)限的(de)(de)(de)，稱為(wei)(wei)立體劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)。對劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)的(de)(de)(de)基本要(yao)(yao)(yao)(yao)求(qiu)是線(xian)(xian)(xian)條(tiao)清(qing)晰(xi)勻稱，定型、定位尺寸準確。由于劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)的(de)(de)(de)線(xian)(xian)(xian)條(tiao)有一定寬度(du)(du)，一般要(yao)(yao)(yao)(yao)求(qiu)精度(du)(du)達到0.25-0.5mm。應當注意，工(gong)件的(de)(de)(de)加(jia)工(gong)精度(du)(du)不能完全(quan)由劃(hua)(hua)(hua)(hua)(hua)線(xian)(xian)(xian)確定，而(er)應該在(zai)加(jia)工(gong)過(guo)程中通過(guo)測量來保證。