宿迁双头外丝直接 VN
宿迁单头外丝直接 VWN
宿迁双头螺纹长接 VLN
宿迁单头螺纹长接 VWLN
宿迁直通式内丝 VSO
宿迁短形直通式内丝 VHSO
宿迁厚壁直通式内丝 WPS
宿迁双头内丝 WPTS
宿迁单头内丝 WHPTS
宿迁六角螺纹短接 WM6N
宿迁六角异径讨论 WMRN
宿迁有边内丝讨论 WMS
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