We are a professional fastener manufacturer in Ningbo, China.
ASTM A325/A325M A490/490M Heavy Hex Structural Bolts
ASTM A193 GR B7, B7M, B8, B8M, B16 Threaded Rods
ASTM A194 GR 2H, 2HM, 7, 7L, 8, 8M Heavy Hex Nuts
ASTM F436/F436M Hardened Flat Washers
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www.nbasme.com
