摩擦焊钻杆及接头

摩擦焊钻杆及接头执行API / SPEC/5DP和 SY/T5561-2008标准，钻杆现有DZ50、R780、 G105、S135钢级，均经过局部或整体热处理， 机械性能满足标准要求；接头采用优良的合金钢35CrM。、4137H等调质处理，螺纹由数控车床、成型刀具加工，表面镀铜或磷化处理，防粘扣性能良好。也可根据客户要求定制生产。

Friction Welding Drill Pipe and Adapter

Friction w elding drill pipe and adapter are in accordance with APISPEC 5DP and SY/T5561-2008 Specifications. The steel grades are DZ50x R780、G105、S135 that are after partly or overall heat treatment.The adapter part adopts thermal refining to superior alloy steel 35CrMo or 4137H that is after thread hardening treatment and phosphating to better antiseize. It also can be produced upon customers requirements.