astm a155 gr c55 class 2
astm a155 gr c55 class 2
(OP)
astm a155 was replaced with a671 (1978)....
the question is: does a671 gr.55 correspond with a155 gr.55
the question is: does a671 gr.55 correspond with a155 gr.55
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RE: astm a155 gr c55 class 2