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american standard a572 grade 65 rolled steel joist weight american standard a572 grade 55 heb beams mill american standard a572 grade 65 rolled steel joist property. ASTM A572 Specification refers to High-Strength Low-Alloy Steel Plate for structural building, among the 5 steel grades of 42, 50, 55, 60 and 65, Grade 50 is one most common steel in applications where need more strength and less weight, use steel plate of this grade other american standard a572 grade 55 heb beams mill
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