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ASTM SA307 Grade A:ASME B18.2.1
hex bolts
ASTM SA307 Grade B:ASME B18.2.1
heavy hex bolts
Material Spec & Grade
ASTM SA307 Grade A:
minimum tensile strength of 60 ksi and intended for
ASTM SA307 Grade B:
Applied to flange piping systems and cast iron flanges with tensile strength of 60 ~ 100Ksi and bolts
Mark
ASTM SA307 Grade A: ASM+307A
ASTM SA307 Grade B: ASM+307B
ASTM SA307 Grade A:ASME B18.2.1
hex bolts
ASTM SA307 Grade B:ASME B18.2.1
heavy hex bolts
Material Spec & Grade
ASTM SA307 Grade A:
minimum tensile strength of 60 ksi and intended for
ASTM SA307 Grade B:
Applied to flange piping systems and cast iron flanges with tensile strength of 60 ~ 100Ksi and bolts
Mark
ASTM SA307 Grade A: ASM+307A
ASTM SA307 Grade B: ASM+307B