Â­Steel is iron that has most of the impurities removed. Steel also has a consistent concentration of carbon throughout (0.5 to 1.5 percent). Impurities like silica, phosphorous and sulfur weaken steel tremendously, so they must be eliminated. The advantage of steel over iron is greatly improved strength. The open-hearth furnace is one way to create steel from pig iron. The pig iron, limestone and iron ore go into an open-hearth furnace. It is heated to about 1,600 degrees F (871 degrees C). The limestone and ore form a slag that floats on the surface.
$7.20. 1  Cost can add up quickly, especially if youâre a novice and have never attempted a T & G Siding installation before. 2  Be sure to have a copy of the T & G Siding Manufacturerâs recommended installation requirements before starting, to make sure your project doesnât end up costing you more money in the long-run.
Installation Costs. The cost of installation is highly variable and depends on the type of system, the choice of contractor and the complexity of the required work. Installation charges for a typical home range from $3,000 to $6,000 with an average cost of about $4,700.egular efficiency boilers range in price from $2,500 to $4,000 with an average cost of $3,250. High-efficiency models cost between $5,000 and $9,000 with an average cost of $7,000. 1  Air Handler or AHU.