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ISO 11961:2008规定了石油和天然气行业钻井和生产作业中使用的带镦粗管体端部和焊接工具接头的钢钻杆的三个产品规格等级(PSL-1,PSL-2和PSL-3)的交货技术条件.PSL-1的要求构成本ISO 11961:2008的基础,但也给出了定义PSL-2和PSL-3标准技术要求不同级别的要求.\nISO 11961:2008涵盖了E级钻杆和高强度X,G和S级...