Prefabricated stair side face connecting joint
A prefabricated stair side face connecting joint comprises a staircase side wall and a prefabricated stair flight, a dry seam between the staircase side wall and the prefabricated stair flight is filled with first flexible materials, a groove is formed in the end, adjacent to the staircase side wall...
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Format: | Patent |
Sprache: | chi ; eng |
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