Gb T 16270 Pdf _hot_ Jun 2026

Chinese standards often allow slightly wider tolerances on thickness dimensions but have stricter rules for low-temperature impact testing.

Note: Higher grades (Q690) often require micro-alloying elements like Nb (Niobium), V (Vanadium), Ti (Titanium), and sometimes Cr (Chromium) or Mo (Molybdenum). gb t 16270 pdf

: It applies to steel plates with a thickness up to 150mm . Chinese standards often allow slightly wider tolerances on