本发明公开了一种110ksi抗硫化物应力腐蚀钻杆接头用管的制造方法，步骤如下：步骤一、炼钢、制备圆坯；步骤二、轧成无缝钢管7～10米长的无缝钢管经过无损探伤和精整工序后送到下道工序；步骤三、两次调质热处理；步骤四、性能检测；步骤五、将检验合格的无缝钢管分切成机加工要求尺寸的抗硫钻杆接头坯料。本发明的有益效果是：采用以上成分和制造方法得到的钻杆接头既有良好的淬透性又具有良好的力学性能和抗腐蚀性能，且性能稳定，这样可以节省钻杆接头厂家的制造时间和实验成本。本工艺可以替代传统抗硫接头的生产工艺。

The invention provides a corrosion-resistant alloy coupling and a coating method thereof. The coupling is integrally formed by an inner thread section with two symmetrical ends and a coupling middle hole section, wherein a coupling seal face is arranged between an internal thread and a coupling middle hole, and the inner thread, the coupling seal face and the coupling middle hole are respectivelyprovided with a coating. The coating is a mixed solution of polytetrafluoroethylene, aluminum oxide, copper oxide, titanium oxide TiO2 and a polymer phenolic resin organic binder. The coating method of the coating includes steps of pretreatment, surface cleaning, preheating, coating application, high temperature curing and the like. The corrosion-resistant alloy coupling has the advantages that the coating has protective and anti-thread-gluing functions, an existing corrosion-resistant alloy coupling copper plating process can be replaced, the environmental pollution problem of copper platingin production is solved by applying the coating technology, the phenomenon of oxidative discoloration of a copper layer is avoided in storage, and the anti-thread-gluing effect of the corrosion-resistant alloy coupling is better in screwing because that the coating itself has a lubricating function.