Steel casing pipe is used in different types of horizontal underground boring, where the pipe is jacked into an augered hole in segments and then connected together by welding or by threaded and coupled ends, or other proprietary pipe connectors. The steel casing pipe can also be set up and welded into a "ribbon" and then directionally pulled through a previously drilled hole under highways, railroads, lakes and rivers
API spec 5CT,& 5B, GOST 632-80,GOST 633-80
Casing serves as walls of a well
Casing Range : 4 1/2~ 20"
Grade :J55 K55 N80 L80 P110
Thread :STC LC BC XC
Length Range: R3