Specification for clayware field drain pipes and junctions 田间排水用陶土管及连接管规范
2.
Specification for straight concrete and clayware cable covers 混凝土与粘土制直形电缆沟盖板规范
3.
Sills and copings - specification for copings of precast concrete , cast stone , clayware , slate and natural stone 窗台板及盖顶板.第2部分:预制混凝土铸石粘土石片及天然石制顶盖板
4.
Sills and copings - specification for window sills of precast concrete , cast stone , clayware , slate and natural stone 窗台板及盖顶板.第1部分:预制混凝土铸石粘土石片及天然石制窗台板
