Casing pipe also called “encasement pipe”,is underground construction.Casing pipe safeguard many kinds of utilities, like water mains,electrical high-voltage lines,natural gas lines and fiber-optic communication lines from damage.These utilities need protection from human activity and natural elements.The construction of deep foundations also makes use of steel casing pipes.
Casing pipe is used in different types of horizontal underground boring, where the pipes is jacked into a hole in segments and then connected together by welding or by thread and coupled ends,or other proprietary pipe connectors.
The production of casing pipes are from steel smelted in electric furnaces, treated with synthetic slag and cast by continuous casters. This steel-making process guarantees the attainment of chemically pure steel,given the phosphor and sulfur contents.This provides highly ductile,malleable and corrosion-resistant pipes,which can operate at low temperatures in a number of corrosive media.Steel grades and heat-treatment regime application allows production of high-strength pipe.
Casing pipes should have minimum yield strength of 35000 psi. Casing pipes need to have smooth walls and be exceptionally stright and round.Casing pipe and joint construction should be of uniformly thick steel to avoid any matter leaking from the casing.Use pull-on or wrap-around rubber varieties of “casing end seals” to seal the ends of the steel casing pipes.