GUIDED BORING METHOD WITH POWERED REAMING HEAD Step 1: PRECISE INSTALLATION OF PILOT TUBES The first step is the installation of the pilot tube on line and grade. Step 2: ADVANCING THRUST CASINGS ALONG PILOT TUBE PATH The second step is to follow the pilot tube with a reaming head or other upsizing tool and standard 11” OD thrust casings. Step 3: INSTALLATION OF PRODUCT PIPE WITH POWERED REAMING HEAD In the third step, the powered reaming head follows the thrust casings to increase the bore to match the product pipe diameter. Lubrication Ports (3) On Rear Section Jetting Ports (2) On Reaming...
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