WA 081314332212 ( Kodrat)
Square pipe or often called "hollow" is a hollow iron bar with a standard length of 6 meters. This box-shaped iron is widely used in construction for ceiling iron frames and partition wall frames for homes or buildings. Solid hollow iron has been widely used as a substitute for wooden frames because of its sturdiness and homogeneous quality because it is produced in factories. The advantages are installation that is faster, more durable, termite resistant, anti-rust, cheaper, and free of maintenance costs.