When we use stainless steel hexagon nuts, we often encounter slippery teeth, which makes stainless steel nuts unusable; and carbon steel nuts rarely do this. So what is the reason for this annoying problem? Under normal circumstances: stainless steel nuts of the same diameter do not have the strengt... read more
Civil testing methods: 1. Use a magnet to attract, it is not a 304 screw if it can be attracted, and an authentic 304 screw if it cannot be attracted. 2. Looking at the surface, if the surface gloss is bright, it is a 304 screw, and if it is not bright, it is a fake. 3. Identify the screw with potio... read more
1. The cleaning and drying work of the hinge in the early stage should be done as required, otherwise no matter how good the electroplating treatment is in the later stage, it will not be able to achieve the purpose of rust prevention. Some unscrupulous merchants use unclean water when cleaning or t... read more
When brown rust spots (spots) appear on the surface of the combined screw, people are surprised: "The combined screw does not rust, and the rusty combined screw can be a problem with steel." In fact, this is a one-sided error and lack of understanding of combined screws. Certain conditions for rusti... read more
1. The role of flat pad 1. Enlarge the contact area between the screw and the machine; 2. Eliminate the damage to the surface of the equipment when the spring pads are unloaded. When used, it must be: a spring pad and a flat pad, the flat pad is next to the surface layer of the device, and the sprin... read more
Yuyao Xintai Hardware Co., Ltd. was founded in 2005, which is a professional China construction anchor bolts manufacturers and concrete anchor bolts factory,our company engaged in various kinds of expansion bolt,high strength fasteners. We are near to Hang Zhou Bay, and cover 7000 square meters.
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