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  购买标准件的注意事项:

  Notes on the purchase of standard parts:

  在订购时应注明产品名称和标准编号。对有机械性能等级的产品应标出性能等级。在购买时,先要确定需要什么螺丝种类,后在确实需要什么材料,后在确定需要什么螺丝规格,在就是需要多少数量,还有有没有包装要求,怎么去收货等等。每一部分的具体检验项目根据不同产品有不同的规定。例如尺寸检验项目对六角螺母规定为螺纹通规、螺纹止规、螺纹小径、对边宽度、对角尺寸、螺母高度、螺母支承面与螺纹轴线的垂直度;而对平垫圈规定为内径、外径、厚度、外圆对内孔的同轴以及平面度等。

  Specify the product name and standard number when ordering. The grade of products with mechanical performance grade shall be marked. At the time of purchase, the first to determine what types of screws need, after really need what material, what need to determine in screw specifications, is in quantities and there are no packaging requirements, how to collect the goods etc. Each part of the specific inspection items according to different products have different requirements. Such as the size of test items of six nut thread through provisions for regulation, regulation, thread, thread check on edge width, diagonal dimension, height of nut, nut bearing surface and thread axis perpendicularity of flat washer; provisions for the inner and outer diameter, thickness, the outer circle of the inner hole of the same axis and flatness etc.

  我们愿以最佳的服务意识,迎接八方来客,诚恳与国内外各界朋友精诚合作,共创美好的前程。欢迎大家前来参观洽谈!

  We are willing to take the best service, welcome eight visitors, sincerely with domestic and foreign friends sincere cooperation, create a better future. Welcome to visit and negotiate!


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