هزینه نمایندگی astm a351 cf8m
A351/A351M Standard Specification for Castings, Austenitic, for Pressure-Containing Parts. Note 1: Carbon steel castings for pressure-containing parts are covered by Specification A216/A216M, low-alloy steel castings by Specification A217/A217M, and duplex stainless steel castings by Specification A995/A995M. 1.2 A number of grades of austenitic steel …