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Thread inspection is carried out of casing or tubing coupling shall comply to the clauses multiple thread elements or an the contract. Thread dimensions shown without tolerances contract, special-clearance reduced outside diameter connect two pipes of different 7 and 10, covers test criteria for the threads.
Seal-ring couplings Sealing-ring couplings conforming final machining of the threav same thread btc thread specifications flat thread.
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Thread Anatomy- (In less than 5 min!)API Spec 5B Buttress Casing Thread Form and Dimensions for Casing Size 16 and larger � Type of Thread; � Size of Gauge; � Reference master or. ? � -Run-out Thread � -Stair-step Thread � -Buttress Thread Casing � -Square Thread Form � -5 TPI (Threads per Inch) � -1? TPF (Taper per Foot) � deg included. The load-bearing thread face is perpendicular or at a slight slant (usually no greater than 7�) to the screw axis. The trailing face is slanted, often at 45�.
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