ASTM A320
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Pernos hexagonales pesados de acero de aleación ASTM A320 grado L7
ASTM A320 Grade L7 alloy steel heavy hex bolts are impact-tested, quenched-and-tempered fasteners for low-temperature pressure vessels, valvulas, bridas, fittings and industrial equipment.
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Pernos hexagonales pesados de acero de aleación ASTM A320 grado L7M
ASTM A320 Grade L7M alloy steel heavy hex bolts combine low-temperature impact requirements with restricted hardness for pressure-equipment joints where the project specifies L7M.