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Astm a572-50
q345b is equivalent to grade 50
A B C after that grade D
SS stand for Structural Steel,400 for grade, AISI 1018, En 1a, St37 are equivalent steel.
Plate and Steel. A grade of scrap
Equivalent material e36
no
API 5l X52
its is not steel. ABS - Acrylonitrile butadiene styrene
1042/1045
CK22 is the equivalent DIN grade for EN3A
A656