我队钢粒原料全部采用废Φ50或42钻杆切制，钢粒切割机系西安市制造的，钢粒直径比较大，一般为4～4.5公厘，最大达5.5公厘，个别有达6公厘，主要因废钻杆磨损的厚薄不均。在切制过程中，机器上的刀刃只能控制切的距离，不能控制钻杆本身的厚 All the steel raw materials of our team are cut by using waste Φ50 or 42 drill rods. The steel cutting machine is manufactured by Xi’an and has a relatively large steel particle diameter, generally 4 to 4.5 mm and a maximum of 5.5 mm, with individual up to 6 Millimeters, mainly due to the uneven wear and tear of the waste drill pipe. In the cutting process, the cutting edge on the machine can only control the cutting distance and cannot control the thickness of the drill pipe itself.