... 45#, 16Mn; Specification dia:57mm-dia:630mm. (2) High-frequency welded pipe: material Q235A/B; ... cast iron, 18#, 22# pig iron. 2. Steel plate (1) Cold rolled sheet in coil, cold ... rolled sheet in box: Specification 0.4mm-3.0mm; Material: ST12, SS400, SPHC. (2 ... Specification 2.0mm-15.5mm; Material: Q235, SS400, SPHC, 16Mn, 16MnR, 20G, 65Mn. (3) Medium plate: ...