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鋁(lv)合金(jin)線棒是外層(ceng)(ceng)(ceng)覆塑層(ceng)(ceng)(ceng)中(zhong)間金(jin)屬層(ceng)(ceng)(ceng)內層(ceng)(ceng)(ceng)為防銹(xiu)層(ceng)(ceng)(ceng)的鋼塑復合管,為環保金(jin)屬層(ceng)(ceng)(ceng)和塑膠(jiao)層(ceng)(ceng)(ceng)之間不使(shi)用粘(zhan)合劑粘(zhan)接,現在(zai)(zai)的工(gong)藝(yi)是塑膠(jiao)層(ceng)(ceng)(ceng)直接附在(zai)(zai)金(jin)屬層(ceng)(ceng)(ceng)上(shang)面。