Hollow Pipe which is a type of building material that is needed for various needs. Call it to make fence posts, house roofs, building construction materials, gas lines, water channels, and furniture materials. For this reason, hollow iron pipes have several different sizes depending on their use. hollow which is a box-shaped pipe made of steel, stainless steel, or galvanized iron. Hollow iron pipes are often used as material for construction accessories such as ceilings, canopies, fences, and gates. Hollow iron pipes with various advantages of fire resistance because hollow iron pipes have the main material and coating that can prevent fire from entering and damaging the main part of the pipe.