Tuesday, July 12, 2011

[MW:11696] HARDNESS VALUE

Hi Experts,

Could anybody tell maximum Hardness value for the following materials with code reference .What is the effect of heating by flame torch on these material ,( Flame heating is done to remove chocked polymer from inside the pipe by contractor )

1.ASTM A 106 GR.B, A105, A 234 ( CS Pipe and Fittings ).

2.ASTM 516 GR.70 ( CS Plate )

3.ASTM A 312 TP 304, 304L.316, -A182 TP 304,304L,316.- A403 ( SS Pipe and Fittings )

PWHT is not applicable as per code and service  and NACE is not applicable not for sour service .

Construction code: ASME B 31.3 and ASME Sec VIII Div I

Welding : ASME Sec IX.

Waiting for your detailed reply.

Regards,

SAIFULLA

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