| 1. | Step irons for staggered manhole steps - part 3 : bolted - on step irons 错列人孔阶梯脚扣.第3部分:螺栓连接的阶梯脚扣 |
| 2. | Step irons with upstand for staggered manhole steps - part 3 : bolted - on step irons 错列人孔直立式阶梯脚扣.第3部分:螺栓连接的阶梯脚扣 |
| 3. | Step irons for staggered manhole steps - part 2 : step irons to be set into prefabricated concrete units 人孔错列阶梯脚扣.第2部分:浇入混凝土预制件的阶梯脚 |
| 4. | Step irons for staggered manhole steps - part 1 : step irons to be fitted in masonry or set into concrete 人孔错列阶梯脚扣.第1部分:砌墙或浇灌混凝土阶梯脚扣 |
| 5. | Step irons with upstand for staggered manhole steps - part 2 : step irons to be set into prefabricated concrete units 人孔直立错列阶梯脚扣.第2部分:浇入混凝土预制件的阶 |
| 6. | Step irons with upstand for staggered manhole steps - part 1 : step irons to be fitted in masonry or set into concrete 人孔直立错列阶梯脚扣.第1部分:砌墙或浇灌混凝土阶梯 |