Hebei Yanshan Kyushu tubing Manufacture Co. sales concrete pump, pump accessories. Boom main products are: * Sany, 37 m .38 m .42 m .45 m .46 m .48 m .56 m * Zoomlion, 37 m .40 m .44 m .47 m. .49 meters. * Liaoning Heino, 37.43.47 meters Fukuda .37 meters. * Xugong, 28.32.35.36.37.40.44 meters. * PM, 36.37.42 meters. * horse racing, 37.47 m. * radius, 36 meters * Hyundai, 37 m * 36 m Far East;. 37 m, 39 m * Anton Lenny, 37 m * Lassie * Schwing 34.36.42 meters, Chutian ...... ordinary wear Boom arm A stand pipe, which is widely used at present, the majority of users of the pro-Lai. Boom wear through the inner arm hardening, carburizing chemical treatment, flange bushing hardness of 58-60 degrees, the life of the pipeline increased 3-5 times, allowing users to save time and money, eliminating the need for regular tube replacement trouble, improve production efficiency. At the same time it has wear and corrosion resistance, heat resistance.