... min mold speed Big Concrete Floor Slab Machine 300x1200 ModelHTY Pre-stressing Concrete Hollow Core Slabs Forming Machine is a kind of concrete ... for operation and maintenance9) The best after-sale service Haitian is a professional producer of pre-stressing concrete hollow core slab forming ... to 18m, width are 600mm,900mm and 1200mm, the thickness is 120mm,150mm,180mm,200mm,250mm, 300mm and 380mm. It ...