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ASTM JIS GB Carbon steel Standard Size Of Mild Steel Angle, US $ 350 - 450 / Ton, AiSi, ASTM, GB, JIS, 25mm*25mm-250mm*250mm, SS400-SS540 Series, SS400 S235JR S355JR S390JR S420JRS275JR ASTM A36 St37-2 St-52.Source from Shanghai Shunyun Industry Co., Ltd. on Waimaotong.com.