Power Enclosed Fitting, also known as: Wall Penetration Enclosed Rib, Enclosed Rib Fitting, Power Enclosed Fitting, Protective Enclosed Rib, etc.; this product is composed of steel plates and rigid sleeves. Power Enclosed Fittings are suitable for inserting through walls with various diameters or the same diameter simultaneously. The wall penetration pipes of Power Enclosed Fittings should be made of hot-dip galvanized steel pipes with a wall thickness of not less than 2.5mm, and the number of sleeves is determined according to the design requirements. Power Enclosed Fittings are divided into types A, B, C, D, and E, with a thickness of 3-10mm hot-dip galvanized steel plates, which are double-sided welded to hot-dip galvanized steel pipes and should also be securely welded to structural rebars.