Bu lông liên kết M20 cấp bền 8.8 mạ kẽm

This is a Grade 8.8 zinc-coated M20 fully threaded bolt designed for heavy-duty steel structures requiring high load-bearing capacity.

• The description claims that the Grade 8.8 standard indicates a tensile strength of 800 MPa and a yield-to-tensile ratio of 80%.