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1)  Pipe threads where pressure-tight joints are mede on the threads
GB/T 7306-1987 用螺纹密封的管螺纹
2)  Pipe threads where pressure-tight jojints are not made on the threads
GB/T 7307-1987 非螺纹密封的管螺纹
3)  Boundary dimensions of E.O.T.cranes
GB/T 7592-1987 通用桥式起重机 限界尺寸
4)  Field balancing equipment--Description and evaluation
GB/T 7221-1987 现场平衡设备的说明和评价
5)  Taper pipe threads with 60 degree
GB/T 12716-1991 60°圆锥管螺纹
6)  Regulators for gas cylinders used in welding,cutting and allied processes
GB/T 7899-1987 焊接、切割及类似工艺用气瓶减压器
参考词条