sa572grade 50 quality

ASTM A572 Grade 50 High Tensile Low alloy steel - JOIN ASTM A572 Grade 50 material is belong to High Tensile Low alloy steel in ASTM standard. ASTM A572 Grade 50 also can be called High Tensile Low ...

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steel construction for poultry pig

China China Poultry Farm Large Steel Structure Pig House pig farming construction,pig house structure,pig farm house,pig house construction. Size:Length is 62.5m*Width15m*Height4.84m with equipment. ...

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