阳谷县水利局砂管厂在聊城行署水利局和省水科所的帮助下,于一九七八年五月,用挤压法生产了一批内径22厘米、外径30厘米、长1米的水泥土管。管壁密实,表面光滑,可代替混凝土管用于农田灌溉。该管是以优选配比10%左右的水泥(济南水泥厂产400号矿渣硅酸盐水泥),45%阳谷县景阳岗的特细砂、45%该厂院内的粉质壤土和13%左右水分经均匀拌合挤压成型的一种管 Yanggu County Water Conservancy Bureau sand pipe plant in Liaocheng executive branch of the Water Conservancy Bureau and the Provincial Water Branch with the help of in May 1978, with the extrusion method to produce a number of diameter 22 cm, diameter 30 cm, length 1 M of cement soil pipe. Thick wall, smooth surface, can replace the concrete pipe for farmland irrigation. The pipe is made of cement with a mixing ratio of about 10% (Jinan Cement Plant No. 400 Slag Portland Cement), 45% special fine sand in Jingyanggang, Yanggu County, 45% silty loam in the factory and About 13% of the water by a uniform mixing extruded a tube