First, in the present market the standard letter mainly has the carbon steel, the stainless steel, the copper three materials.(one) carbon steel. We foresee accurately the carbon by the carbon steel the content to differentiate the low-carbon steel, the medium …

First, natural quality 　　The copper is one which of ancient metals the humanity discovered most early, as early as the humanity starts more than 3000 years ago to use the copper. 　　Metal copper, symbols of the elements Cu, atomic weight 63.54, proportion…

The standard is a standard, each country and the department have own standard. A fastener product also exception, we the most Chang Yongdao standard have the following several kinds in the usual service:GB- China national standards (GB code) ANSI- US national s…

Is stuck the material the surface treatment and the glued joint (one) character of surface influence 1st, cleanliness: A metal surface adsorption cohesive strength low surface energy low pollution level and the oxide film, this will reduce the glue-joint streng…

The stainless steel is industry professions and so on petroleum, chemical industry, chemical fertilizer, food, national defense, tableware, synthetic fiber and petroleum refining the widespread use metal material, but because many vessels, the pipeline, the val…

Can resist one kind of high alloy steel which in the air or in the chemical etching medium corrodes, the stainless steel has the artistic surface and the anti-corrosive performance is good, does not need to pass through colors and so on surface tre…

Bolt, bolt and stud (3098.3-2000), nut (3098.15-2000), clamping screw nail (3098.16-2000)According to related national standards production fastener suitable stainless steel material.Only if supply and demand both sides have the agreement in addition, the chemi…