... ,Q345B 3.payment terms:T/T,L/C,OA engineering machinery steel plate Q3451.Standard:GB/T912, ... GB/T32742.materil:Q345A,Q345B,Q345C,Q345D 3.payment terms:T/T,L/C ... ,OA Specifications1unequal angle steel material:Q345A B C DISO9001/SGS audited certificationUnequal ... :about 20000 tons. Hot rolled engineering machinery steel plate Q345