ASTM A53/A53M Standard Specification for Pipe, Steel astm a53 grade b black steel pipe
ASTM A53/A53M, 2020 Edition, July 1, 2020 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless This specification 2 covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1 8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness (Note 2) as given in Table X2.2 and Table X2.3.
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hot rolled stk400 unequal angle steel bar