点击_11 3米3.5米4米4.5米镀锌管_钣金图片查看原图
[VIP第9年] 指数:6
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手孔井的内围尺寸要求为500（长）×500（宽）×600（深）MM，用砾石铺层作为渗水用；手孔井四壁必须抹水泥沙浆。
Hand hole hole of the inner size for 500 (length) x 500 (width) x 600 (deep) MM, with gravel layer for water penetration;Hand hole walls must be well cement mortar.
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11 3米3.5米4米4.5米镀锌管_钣金厂家_基本资料信息
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手孔井的内围尺寸要求为500（长）×500（宽）×600（深）MM，用砾石铺层作为渗水用；手孔井四壁必须抹水泥沙浆。
Hand hole hole of the inner size for 500 (length) x 500 (width) x 600 (deep) MM, with gravel layer for water penetration;Hand hole walls must be well cement mortar.
