Certificates

WKZ042-2006      P355NL1/SA516Gr70N+S5

1, steel ingot and billet according to Ⅱgroup steel of heating, according to the Ⅱtype controlled rolling, than finishing temperature≤860 ℃.

2, normalized temperature: 910 ±10 ℃;

Normalized furnace heating time ≥1.6 min/mm;

The machine furnace, the furnace bottom quartile heat preservation time≥1.6 min/mm.