Member's display RITA66 Henan Supioneer Metal Materials Co., Ltd

Manufacturer of carbon steel plate structure steel for bridge: Thickness?6-200mm Width?900-4900mm Length?1000-52000mm Tolerance?As standard or requirements. Grade?A709,Gr50,Q235q-Q500q(C,D,E) Q550q-Q690q(D,E) Standards?JIS AISI ASTM GB DIN EN