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Galvanized High Strength Bolting

Galvanized High Strength Bolting

Galvanized High Strength Bolting

(OP)
Hi,

Someone told me, "High strength bolting (>150,000 psi [1100 MPa] ultimate tensile strength) shall not be hot-dip galvanized, but shall be coated by mechanical galvanizing or with an inorganic zinc rich primer"

However, I have no idea about this reason.

and more,
I thought that B7 bolting and galvanized B7 bolting have different mechanical properties.

Is it wrong???

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