product: hot rolled I beam steel Grade: Q235B, Q345, SS400, etc. size:100* ... 12m hot rolled I beam steel Tangshan yunfeng industrial and trading Co., ltd is the fist level agent of JINXI, ... steel for many years, with the strength of H BEAM, I BEAM, ANGLE STEEL AND U CHANNEL STEEL with the ... ISO9001:2008 International Quality Control System Standards.This I-beam is used to support the first floor of a ...