INTRODUCTION
a). The pipe casing should avoid to the collision, especially of casing joints knock againstwhen install the casing bolts, it must be clean, otherwise it will cause the difficult installation
b). The drilling bucket needs to be chiseled in advance when pile casing drives the increasedtorque to diffcult
c). The drilling bucket needs to be checked position and verticality of hole, to avoid openingthe door at the hole bottom when lift the drilling open and closed against to casing shoes
d). You must be tested all movements of pulling machine normally before concretingPull up pipe casing immediately to prevent steel trunk floating after the end of grouting
- Casing joint
COMPANY PROFILE
EXHIBITION
CERTIFICATE
