[Ya blessing] 304 matching bolts and nuts. 25Cr2MoV alloy supporting bolts and nuts Contact: Ma Yuanyuan Contact: 18732703585 Website: http://www.czhypipe.com/ Cangzhou Hongyuan Pipe Co., Ltd.) Cangzhou Hongyuan Pipe Co., Ltd. is a steel sales and pipe fittings production one of the large integrated enterprise. The company is located in the pipeline equipment industry in China to create the base - Hebei Yanshan. East of Huanghua Bohai Sea, north of Beijing and Tianjin, superior environment and convenient transportation. The company mainly engaged in a variety of materials pipe: 304,304 L, 316,316 L, 321,310 S ,18-8, 16Mn, 20 #, 20G, 12Cr1MoVG, P91, 10CrMo910, 15CrMo product quality: have passed ISO9001 international certification , pressure vessel manufacturing license. (2) Surface treatment: rust black paint, rust varnish, transparent anti-rust oil, hot-dip galvanizing, cold galvanizing, 3PE coating, epoxy coating. Flanging many different types of classification methods are not the same. Which can be classified according to the nature of the deformation elongation flange and compression flange by two parts of the head and screw (cylinder) with an external thread fasteners to be in conjunction with the nut for fastening connecting the two parts with a hole. This form of connection, said bolts. Such as unscrew the nut from the bolt, so that the two parts separately, so the bolt connection is detachable connection. Some bolt not threaded rod light to be meticulous the, called slender waist bolts. This bolt is conducive to by the inotropic join. The steel structure on the special high strength bolts, the head will be bigger, the size changes. Another special use: T-shaped slot bolts, jigs and fixtures used most special shape, the side of the head to be cut off. Anchor bolts for machines and fixed ground connection, there are a variety of shapes. U-shaped bolts, as described above. And so on. Dedicated stud welding a threaded one did not, can be welded on the part, the other side directly to tighten the nut.