Shanghai Yi Sheng Steel Pipe Co., Ltd., and its subsidiary Shanghai Zhang Sheng Metal Factory, is a professional enterprise producing all kinds of cold-drawn seamless steel pipe. Over the years,in the community's strong support,our company developed steadily. At present, with five standard factory covers an area of about 15,000 square meters. Employs 150 people, including undergraduate degree 8 People, specialist degree 20 People, intermediate professional titles 12 People. Our company produces high-precision high-quality precision seamless steel tubes, enjoying a good reputation and word of mouth. Our company uses high-quality steel billets,according to national standards of professional production, processing and marketing seamless steel Pipes, Seamless Shaped Steel Pipes, seamless precision steel Pipes, gas cylinder Pipes. Are widely used in machinery, automobile, pressure vessel, textile, construction, military and other industries." Quality First, Customer First" is our consistent aim," Quick delivery abide by the contract" is our consistent principle of. Our company has passed ISO9001 international quality certification (Certificate No.: 02403Q11818R0S). Our company after 10 years of unremitting efforts, in the steel production process and testing methods, accumulated a wealth of experience, has established a complete quality system. Have been mechanical property testing, metallographic analysis, process performance testing, elemental analysis, eddy current inspection and testing methods. At present,Our company has OD 45 perforation machine 1 sets, OD 60 of the perforation machine 1 sets, OD 90 of the perforation machine 1 sets,OD 30mm ~ 60mm of cold rolling mill 6 sets,OD 200mm of cold rolling mill 1 sets,OD 10mm ~ 219mm Straightening Machine 5 sets,10 tons -200 tons of cold-drawing machine 15 sets,anchor Mill 6 sets, ten thousand tons of annual production capacity. As technology advances and new product research and development, we have developed new "truck brake pipe external precision steel" products, fully meet the world-class. Compared to traditional finish tube, new products, the following advantages:1,Pipe wall than the traditional finish tube bright and clean.2,Pipe surface to reach the traditional level of the traditional finish tube.3,Mechanical properties superior to the traditional finish tube. Prices are lower than a traditional finish tube. All in all, the new product has high productivity, low-power, high-quality great advantage is the direction of future development of precision steel tube; is a replacement product. In recent years, our company has been providing a bolt of raw materials. Relying on its own advanced technology, invested in producing hollow anchor rods, self-driven hollow anchor rods and its accessories and have set up in Chengdu a sales center and a warehouse (base stock inventory: 80000 square meters).