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Ние сме международен доставчик на строителни / строителни материали, материали за вътрешно декориране. Продуктите се използват широко в производството на машини, корабостроене, автомобилостроене, високи сгради, голяма стоманена конструкция, корпус от стоманена конструкция, мина, стоманена поддръжка, транспорт на газ, воден транспорт, транспортна платформа за добив на нефт и др Toptac co., Ограничено, намираща се в Хонконг, Китай, международен доставчик на строителни / строителни материали, материали за декориране на закрито. доставка с поцинкована стоманена лента; гореща поцинкована стоманена тръба; тръба EMT; заварена стоманена тръба и стомано-пластмасова композитна тръба; конструкционна стомана; мрежа от стоманени плочи; Повечето продукти са подходящи за мостове, тунели, железопътния обществен транспорт на метрото, повърхностен железопътен влак и големи сгради от тип 4 и 5, както и системи за поддържане на високи вдигания, хибриди за изграждане на етапи, трансформатори, електроцентрали / ядрени централи, както и поддържащи системи за корабостроене тегления и отдели.
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We also supply steel plate , flanges and other pipe fittings in different materials, non-standard products according to customer`s requirement and anti-corrosion processing in the late stage of products. Toptac co.,limited, located in Hongkong,China, international supplier of building/construction materials, indoor decration materials. Provide galvanized steel strip, hot-dip galvanized steel pipe, EMT conduit, welded steel pipe and steel plastic composite pipe, structural steel, steel mesh, most of the products are suitable for bridge, tunnel, rail transit subway, etc., shallow rail train and large-scale 4 and 5 types of building construction, as well as high-rise support system, stage construction hybrid vehicle, transformer, power / nuclear power station and support system of shipbuilding, transportation and department. Application And spiral-steel pipe diameter 219-3620mm, wall thickness 4-30 mm and JCOE steel pipe specializing in the straight double-sided submerged arc welding pipe, and specification of products is 400 - 1500 mm for diameter, 3 m-12 m for length, 8 mm-60 mm for wall thickness. square steel pipes with 30-800mm for diameter ,3-40 mm for wall thickness and seamless steel pipes with 325-1420mm for diameter, 8-40mm wall thickness. Products are widely used in machinery manufacturing, shipbuilding, automobile, high-rise buildings, large steel structure, steel structure housing, mine, steel support, gas transportation, water transportation, oil mining transport platform, etc. Certificate Our products conforms to : national standard GB, American standards (API ASTM ASME), German standard DIN , Japanese standard JIS, British standard BS with complete and effective quality management and quality assurance system. we insist on putting product quality on the first place. The company possesses advance technological equipment and complete inspection measures, We have advanced inspection equipment and instruments: X-ray detection equipment , UT inspection machine, hydrostatic testing machine, tensile test machine, metallurgical analysis tester, a physical test and chemical analysis lab and complete inspection system. All these equipment and testing and inspection measures ensure that production and inspection of products can fulfill standard requirements and satisfy demand of customers. The operation of the company takes good faith as the foundation as the principle, and we express our appreciation to our new and old customers with best quality , reasonable price ,and best after-sale service. We sincerely hope to establish long-term cooperation with you for mutual benefits and joint development !