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Section steel/angle steel/channel/flat/beam, US $ 650 - 1000 / Metric Ton, AiSi, ASTM, bs, DIN, GB, JIS, 50*37*4.5-400*104*14.5mm, SS400-SS540 Series.Source from Tianjin Zhonghua Innovate Steel Pipe Co., Ltd. on Waimaotong.com.