合資公司劃線分為(wei):熱(re)熔(rong)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，常溫冷漆標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，彩(cai)(cai)色(se)防滑標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，振(zhen)蕩防滑反光標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)和(he)(he)預(yu)成型標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)。 熱(re)熔(rong)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)是我國(guo)道路(lu)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)上應用(yong)最廣的一種(zhong)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)。他施工時間(jian)短，耐磨(mo)性(xing)(xing)高(gao)，造價低。 道路(lu)交通標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)主要(yao)劃設于道路(lu)表面，經(jing)受日曬雨淋，風(feng)雪冰凍，遭受車輛的沖(chong)擊磨(mo)耗，因此對(dui)其性(xing)(xing)能有嚴格(ge)的要(yao)求。首先要(yao)求干燥(zao)時間(jian)短，操作(zuo)簡單，以減少交通干擾；其次要(yao)求反射能力強，色(se)彩(cai)(cai)鮮明，反光度(du)強，使白天(tian)、夜晚都(dou)有良好的能見度(du)；第(di)三，應具有抗滑性(xing)(xing)和(he)(he)耐磨(mo)性(xing)(xing)，以保證行車安全(quan)和(he)(he)使用(yong)壽命。

根據圖(tu)樣和技術要求(qiu)，在(zai)(zai)(zai)(zai)毛坯或半成品上用劃(hua)線(xian)(xian)(xian)工(gong)具畫出加(jia)(jia)工(gong)界線(xian)(xian)(xian)，或劃(hua)出作為基準(zhun)的(de)(de)(de)點、線(xian)(xian)(xian)的(de)(de)(de)操作過程(cheng)稱為劃(hua)線(xian)(xian)(xian)。劃(hua)線(xian)(xian)(xian)分為平面(mian)劃(hua)線(xian)(xian)(xian)和立體(ti)劃(hua)線(xian)(xian)(xian)兩種。只需(xu)要在(zai)(zai)(zai)(zai)工(gong)件一(yi)(yi)個表面(mian)上劃(hua)線(xian)(xian)(xian)即能(neng)明(ming)確(que)表明(ming)加(jia)(jia)工(gong)界限(xian)的(de)(de)(de)，稱之為平面(mian)劃(hua)線(xian)(xian)(xian)；需(xu)要在(zai)(zai)(zai)(zai)工(gong)件幾個互(hu)成不(bu)同角度(du)(du)(du)（一(yi)(yi)般是(shi)互(hu)相垂直）的(de)(de)(de)表面(mian)上劃(hua)線(xian)(xian)(xian)，才能(neng)明(ming)確(que)表明(ming)加(jia)(jia)工(gong)界限(xian)的(de)(de)(de)，稱為立體(ti)劃(hua)線(xian)(xian)(xian)。對劃(hua)線(xian)(xian)(xian)的(de)(de)(de)基本要求(qiu)是(shi)線(xian)(xian)(xian)條(tiao)清晰勻稱，定(ding)(ding)型(xing)、定(ding)(ding)位尺寸準(zhun)確(que)。由于劃(hua)線(xian)(xian)(xian)的(de)(de)(de)線(xian)(xian)(xian)條(tiao)有一(yi)(yi)定(ding)(ding)寬度(du)(du)(du)，一(yi)(yi)般要求(qiu)精度(du)(du)(du)達到0.25-0.5mm。應(ying)當注意，工(gong)件的(de)(de)(de)加(jia)(jia)工(gong)精度(du)(du)(du)不(bu)能(neng)完全由劃(hua)線(xian)(xian)(xian)確(que)定(ding)(ding)，而(er)應(ying)該在(zai)(zai)(zai)(zai)加(jia)(jia)工(gong)過程(cheng)中(zhong)通(tong)過測(ce)量來保(bao)證(zheng)。