Zhongshun Steel Group founded in 2000,is a professional manufacturer of carbons steel pipes located in Daqiuzhuang Town of Tianjin City, covering an area of 300,000 square meters, with investment of USD 37 million and more than 350 employees. Our company’s main production is ERW, SSAW and LSAW steel pipes. We have 3 longitudinally H.F. welded pipe production lines, 5 spirally double submerged arc welded pipe production lines. And we also have our own 2 anti-corrosion processing lines; the company can manufacture 300,000 tons of welded steel pipes per year.
Neste vídeo, eu resolvo a questão 20 do vestibular da Universidade de Pernambuco (UPE) de 2014 realizado no dia 25 de novembro de 2013.
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