... channel is the section in the shape of the groove - shaped strip of steel Ordinary grooved steel and light steel channel ... Name:Channel beam, U-steel,channel steel,Standard:GB, ASTM, API, GB 5310- ... -Q345,Technique:Size51*25*3---305*80*13mmLength:6---12mShape:U ChannelApplication:building structure, vehiclesCountry of Origin:China(mainland)Package : ...