The Product Standard: API SPEC 5CT9thPSL1; PSL2; PSL3; Size:1"9~20" Grade:H40,J55,K55,N80,L80,R95(C95),T95,P110,Q125 API round thread casing ...
The Product Standard: API SPEC 5CT9thPSL1; PSL2; PSL3; Size:1"9~20" Grade:H40,J55,K55,N80,L80,R95(C95),T95,P110,Q125 API round thread casing ...
The Product Standard: API SPEC 5CT9thPSL1; PSL2; PSL3; Size:1"9~20" Grade:H40,J55,K55,N80,L80,R95(C95),T95,P110,Q125 API round thread casing ...
Petroleum drill stem joint (butt joint) is the use of oil, natural gas drilling in the tube body on the welding head with the drill pipe, including .....