Hot-rolled casing nipple for oil drilling
Hot Rolled Casing Pup Joint specificatio Tube For Oil Drilling Tubing nipples are divided into three types according to their functions (a) The specifications of both ends of the double male short joint are external thread pattern, and there are any kinds of external thickening and non thickening short joints, external thickening and non thickening short joints, external thickening and non thickening short joints, same diameter short joints and non thickening short joints. (b) Conversion sub. One end is external thread, and the other end is internal thread. Screw the coupling on the external thickened to non thickened sub, external thickened reducer sub, external thickened to external thickened sub, same diameter sub and non thickened reducer sub (c) The length of the adjusting nipple is uncertain, and it is designed according to the project needs. One end is external thread, and the other end is internal thread. The coupling is screwed on the external thickened to non thickened n…
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