摘要： Load Bar (Bearing Bar) A longitudinal load-carrying member of uniform section spanning between supports, which can be plain, serrated, or I section type. Cross Bar (Transverse Bar) The connecting bars, made from twisted square bar or round bar, which extend across the bearing bars, usually perpendicular to them. 阅读全文

摘要： U.S. exports levy on steel grating anti-dumping duties steel grating industry and company effects. Grating due to domestic companies to do the basic processing is the production, it is expected for the grating some impact on this sub-sector, listed companies Xinxing Ductile Iron Pipes grating 2008 output of 7.2 million tons, is the "largest the largest output, exports the largest and most capable "leader in the production of grating . 阅读全文

摘要： 云计算:织成一张网 形成一片云 阅读全文