方形(xing)(xing)防(fang)(fang)(fang)護(hu)罩按加工(gong)方式，同(tong)(tong)時(shi)也考慮到不(bu)(bu)(bu)同(tong)(tong)材料適(shi)于(yu)(yu)不(bu)(bu)(bu)同(tong)(tong)加工(gong)工(gong)藝的因素，可(ke)(ke)分(fen)為(wei)兩形(xing)(xing)式。一種是(shi)鋼(gang)圈支(zhi)撐(cheng)的防(fang)(fang)(fang)護(hu)罩防(fang)(fang)(fang)護(hu)罩，此種護(hu)罩采用(yong)(yong)多(duo)種面料，內(nei)有堅硬的鋼(gang)絲圈支(zhi)撐(cheng)、能在(zai)高溫110℃、低溫-40℃之間正常工(gong)作。可(ke)(ke)有效的防(fang)(fang)(fang)塵(chen)、防(fang)(fang)(fang)水、防(fang)(fang)(fang)油、防(fang)(fang)(fang)乳劑和化(hua)學防(fang)(fang)(fang)腐，另一種是(shi)此護(hu)罩具有外形(xing)(xing)工(gong)整(zheng)，不(bu)(bu)(bu)易變形(xing)(xing)的特點，基于(yu)(yu)它的嚴(yan)密(mi)，堅挺，此護(hu)罩且(qie)可(ke)(ke)用(yong)(yong)于(yu)(yu)眾(zhong)多(duo)機械的通(tong)風(feng)、除塵(chen)等。產(chan)品(pin)的靈活不(bu)(bu)(bu)但在(zai)材料可(ke)(ke)選(xuan)，更在(zai)于(yu)(yu)它可(ke)(ke)以根(gen)據的具體要求來確定所需直徑和長度。