GJB 119.1A~4A-2001 四个附件 |
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GJB 119.2A-2001 普通型无折断槽钢丝螺套
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GJB 119.3A-2001 安装钢丝螺套用内螺纹
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GJB 119.4A-2001 普通型钢丝螺套通用规范
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