Certificates

WKZ073-2005        CortenB

1. The ingot, temperature, WenQing billet send, according to Ⅱgroup steel heating.

2. The Ⅱtype controlled rolling, than finishing temperature ≤900 ℃.

3. normalized temperature: normalizing furnace 910 ±10 ℃, total heating time more than 1.5 min/mm,

Underneath the car furnace, the furnace machine, 920±10 ℃, heat preservation time more than 1.5 min/mm