ASTM A193 B7M SA193 B7M Stud bolts with 2HM Hex Nuts

We are a professional manufacturer of ASTM A193 B7M SA193 B7M Stud bolts with 2HM Hex Nuts in China ASTM A193 Grade B7M is a standard material specification for chromium-molybdenum alloy steel fasteners for use in high [...]