sucker rod coupling with big chamfer

Product Description

This product is produced by API standard and also ISO standard. The cylindrical surface and end face of the sucker rod coupling connections is a chamfering slant with an angle *4° <α< *0°. The junction of cylindrical surface and chamfering slant is a arc Chamfer less than 1.*7mm in radius, which all greatly avoid the scratches damage and wear & corrosion damage on the pipeline wall during the touch between coupling cylindrical surface and the end face, so that the life of the coupling and pipeline are significantly Prolonged.

Its wear-resisting performance is larger than normal joint; it is obvious especially under the bad condition, and the service life lasts *0 times than before. The abrasion to the rod is reduced by 3 times after you using this joint. Also, the friction resistance is reduced by ****5%, saving land electricity waste, increasing the operating safety, decreasing the accident rate.