GB/T3041-1982石棉水泥井管
Asbestos-cement pipe for well casing
GB/T3040-1982石棉水泥输煤气管
Asbestos-cement pressure pipe for gas transmission
以石棉水泥砂浆离心管作为内模衬管,浇筑混凝土后构成现浇混凝土空心板。
With asbestos cement mortar pipe being used as inner liner , concrete is cast to form hollow slab .