Our company specializes in producing high-strength double-headed bolts, hexagon bolt, live section bolts, nuts, materials are 35 #, 45 #, 35CrMoA, 25Cr2MoV, 304,316,304 L, 316L, 2H, 2HM, B7, B7M, B16, B8 , 8, B8M, 8M, widely used in electric power,..
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