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Copper nickel plating is nickel plating on a copper substrate.Nickel plating can be divided into electroplating nickel and electroless nickel plating.After the copper nickel plating can prevent the migration of copper atoms, if the direct chromium plating on the copper substrate, copper atoms will migrate the chromium coating, resulting in copper coating.Inactivity of nickel can protect copper from oxidation.After the plating work in the atmosphere and alkali solution chemical stability, not easy to change color, more than 600 degrees Celsius before oxidation.High hardness, easy to polish, the disadvantage is porous.In a lot of products (especially iron and steel), in the substrate to plating a layer of nickel, the purpose is not only to facilitate subsequent plating of other metals, there are relatively strong adhesion and wear resistance.
1、NPTF锥螺纹接头
说明:这是一种干密封螺纹;是用于输送燃油的国内锥管螺纹,既可用于外螺纹端接头,也可用于内螺纹端接头。NPTF外螺纹可与NPTF、NPSF或NPSM内螺纹配合。NPTF管接头与BSPT管接头类似但不可互相换,大多数尺寸螺纹的螺距不同併且牙型角是60°,而BSPT螺纹的牙型角是55°。
2、JIC37°锥角内螺纹接头
说明:37°锥角(JIC)全铜接头价格汽车工程师协会(SAE)规定37°锥角或锥座可用于高压液压管路。这类管接头通常称为JIC管接头。JIC外螺纹是直纹只能和JIC内螺纹配合,JIC外螺纹是直螺纹,并具有37°锥座面,JIC内螺纹也是直螺纹,并具有37°锥座面。其密封在37°锥座面处形成,某些尺寸的螺纹与SAE45°锥角螺纹相同,应仔细测量锥角以进行区分。
3、SAE 45°锥角外螺纹接头
说明:SAE(45°锥角)这是用于具有45°锥角或锥座的管接头的术语。软铜管通常採用这种接头,因为该材料易于加工成45°角。这种管接头适用于低压应用场合-例如用于燃油管路和制冷管路。SAE 45°塑料接头价格锥角外螺纹只能和SAE 45°锥角内螺纹配合。SAE外螺纹是直螺纹并具有45°锥座面。而SAE内螺纹也是直螺纹,并具有45°锥座面。其密封在45°锥座面处形成。某些尺寸的螺纹与SEA 37°锥角螺纹相同。应仔细测量锥角以进行区行。液压油管接头@唐山液压油管接头@液压油管接头生产厂家价格