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High strength large hexagon head bolts for steel structures GB/T 1228-2006

Alternative list: High strength large hexagon head bolts for steel structures GB/T 1228-1991
Adopting standards: Large hexagon head bolts (large opposite side short thread) for bolted connections of C-grade high-strength steel structures, ISO 7412-1984, grades 8.8 and 10.9, respectively
Shanghai Yaluo fasteners precipitation hardening stainless steel structural bolts

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