公司能够提供3 1/2〞至6 5/8〞所有规格、5英尺至20英尺各种长度的短钻杆。选用AISI 4145H合金钢，按照加API Spec7-1或Spec 5DP规范制造而成。
        PDM provides integral pup joints with outer diameter from 3 1/2” to 6 5/8” and length 5 feet to 20 feet. The pup joints are made of AISI 4145H alloy steel with the specifications covered in API Spec 7-1 or Spec 5DP.
 
        提升短接 Lifting Subs
        公司生产的提升短接选用优质铬钼合金钢，按照API标准制造而成。
        Lifting subs are made of high-quality chrome molybdenum steel and are fully conformed to the requirements of API specifications.
        转换接头 Crossover Sub
        The length of crossover sub is 36〃or 48〃，The materials use steel for drill collar.
        -高端产品 Advanced Products
        ◆高抗扭钻具：高抗矩钻具上扣扭矩比API标准螺纹高出80%以上，在实际应用中深得好评并得到广泛推广。
        High-Torque drilling tools:PDM researches and develops high-torque drilling tools independently, make up  torque is exceed 80% than the API standard thread, obtaining highly praise in the practical application and widely promoted.
        ◆双壁钻杆：双壁钻杆解决了地层控压的问题，大大提高了机械转速。
        Double-wall drill pipe: PDM has a deep petroleum well drilling background, cooperative research and development of double-wall drill pipe, solving the problem of formation control pressure, improving the mechanical revolving speed greatly.
        ◆大位移井专用钻铤：独特的结构设计，在提高大位移井钻井钻速的同时，降低使用风险。
        Special drill collar for large displacement well, highly wear-resistant drill collar: Unique structural design, while increasing the drilling rate of displacement wells, while reducing the risk of use