... , Q275 3.Length: 8, 9,10,12m Name of Products: U-beam of The Mine Channel Steel Specification(KGS/M):25U ... :20MnK, Q275 8, 9,10 Or 12 Name of Products: U-beam of The Mine usage Channel Steel Specification(KGS/M ... keenly wish to cooperate with you for a long time. U-channel beam