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                                Longwin Unisteel Co.,Ltd. was established in 2008, Through 10 years' development, the company has become one of the biggest suppliers of steel pipe , steel fittings, steel coils, steel plates and  PREPAINTED GALVANIZED STEEL COILS with an annual  capacity of 500,000.MT  In the past years, Our products have been supplied to 22 provinces and municipalities in China and more than 10 foreign countries such as Belgium, USA, Papua New Guinea, Algeria, Chile, Brazil, Saudi Arabia, Colombia, Argentina, Vietnam and Singapore etc and have gained favorable remarks both at home and abroad.

                                电子游戏登录注册Our steel pipe Production facilities of the company at present include four SSAW pipe production lines (Φ529、Φ720、Φ1626、Φ2032、Φ2540) and one ERW 25” pipe production line which are capable to produce and supply 200,000 tons/year of spiral submerged arc welded pipe with a diameters range of Φ219-Φ2540mm and a wall thickness range of 6-25.4mm, and 300,000t/year of ERW pipe with a diameter range of Φ219-Φ630mm and a wall thickness range of 4-20mm, and the steel grades of our products is up to X80/N80. Updated and world advanced technology and production/test equipment for the production of spiral weld pipe and ERW pipe were introduced. We imported full line spiral weld pipe production technology and some major equipment from Germany and integrated the most modern technology and equipment in the ERW25” line including the full line technology from Korea/USA, and the major equipment from USA, Korea, Austria, Canada, Germany, Japan and China. The products are mainly used for oil and gas transmission and casing as well as for other purposes. The production and test of our products strictly follow the requirements of relevant ISO, API and other international and national standards as well as customers’ special requirements. The company is ISO 9001-2000, API Spec.Q1, ISO/TS- 29001, API Spec.5 L, API Spec.5CT , Saudi Aramco certified. Our company takes quality, in-time delivery and after-sale service as well as good faith as the first priorities and keeps its production technology in pace with the world advanced level to meet the most strict requirements of the updated products specifications and the special requirements of customers.

                                Concerning fittings,there are first- class manufacturing equipment for pipe fitings and pressure vessels,and more than 200 pcs ( sets) inspection equipment . Our mail product are elbow, tee, bend, reducer, cap and flange.  It cover all sizes, materials and types of fitings and vessels.Especiallyfor high-performance and large diameter cladding and special material products. At the same time, we have the capacity to supply comprehensive products to large-scal projects. Our factory do inspection for the whole process from raw materials, production and processing,and products leaving the factory, to insure 100% production pass rate,which guarantees the product quality effectively.Our product apply in nuclear power plant, power plant, oil, chemical engineering, oil and gas delivery, textile, paper making and other industries.

                                Compared with traditional brick and steel-concrete composite structure, color coated steel plate as a new type of building material has good practical performance, such as excellent decoration, forming, corrosion resistance, land saving. And it is also characterized by its economic efficiency, such as recyclability.transferability, and fast construction. Today, color coated steel plate has become the ideal building material because of its good performances, and being widely used in public buildings, industrial plant construction and other fields. 

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