WW-P-404D, FEDERAL SPECIFICATION: PIPE, STEEL (SEAMLESS & WELDED, BLACK & ZINC COATED) (GALVANIZED) (01-FEB-1973) [S/S BY ASTM-A53]
WW-P-404D, FEDERAL SPECIFICATION: PIPE, STEEL (SEAMLESS & WELDED, BLACK & ZINC COATED) (GALVANIZED) (01-FEB-1973) [S/S BY ASTM-A53]., This specification covers seamless and welded, black and zinc-coated (galvanized) steel pipe for flanging, bending, and coiling.