常温下输送40％硫酸，30％盐酸，15％氢氧化钠以下的酸碱溶液（硝酸除外）。内胶层为黑色，外胶层可选用黑色或红、黄、兰等多种浅色耐酸碱胶料。
Conveyance of solutions of containing less than 40% sulphuric acid, 30%hydrochloric acid and 15%hydroxide sodium under normal temperature.
The tube is black in color and the cover is black, red, yellow and bue in color etc. and acid & alkali resistant.