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What is threaded type CSL sonic tube?
Threaded type crosshole sonic logging pipe
One end welded with pipe fitting threaded outside,the other end welded with inside threading.The middle of the sonic pipes sealed with rubber gasket ring.This connection type applies for thick wall sonic tubes（wall thickness more than 1.8mm）.
The tubes can be cut into any lengths according to the length of bore pile and rebar.No welding required and easy operation on job site.