Apron is made of punched sheet steel. Regular holes on the surface are anti-slip. Six legs below support main surface and bevel angle is about 9°. The apron can bear 1500kg. It can be used by single, twice or more to meet width requirement. Cross pins on the front can be matched and make the apron stable. Dimensions are 7.5m length, 0.8m width and 1.2m height. The apron is divided into 4 parts joined with hinges between them. So the apron can be folded in order to save space and transport easily.