上海祁旺五金制品有限公司主要生产圆柱销内螺纹圆柱销槽销内螺纹排气槽圆柱销圆锥销开口销材质有304316GCr1545#40crQ235标准有DIN1DIN7DIN6325DIN7979上海祁旺五金制品有限公司主要生产圆柱销内螺纹圆柱销槽销内螺纹排气槽圆柱销圆锥销开口销材质有304316GCr1545#40crQ235标准有DIN1DIN7DIN6325DIN7979DIN7978GB117GB119GB118GB120ISO2339ISO2238ISO8734ISO8736ISO8735ISO8744ISO8745ISO8740ISO8741ISO8742ISO8746ISO8747GB13829.4GB13829.2GB878GB877DIN1469DIN1470DIN1472DIN1473DIN1474DIN1475DIN1476DIN1477GB91DIN94ISO1234!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!标签：孔用弹性 孔用弹性挡圈 上海市孔弹性挡圈 上海市孔弹性挡圈厂家上海市上海市[孔用弹性挡圈] 上海市孔弹性挡圈厂家DIN472孔用弹性挡圈