钻杆对焊接头tool joints

我公司生产的钻杆对焊接头严格按照api标准选用优质合金结构钢制造，通过特殊的热处理工艺达到预期的硬度、强度及韧性。螺纹符合api标准，其表面采用磷化或镀铜的工艺进行处理，以提高其耐腐蚀性和抗粘扣性能。

tool joints of our company are made of modified alloy steel, then fully heat treated. so the mechanical properties in accordance with api specifications, such as strength, hardness and impact strength are gaged to standard. all connections are gaged to api spec. and phosphatized or copper plated for anti-galling treatment & resistance to corrosion.