... ,10,12m Name of Products: U-beam of The Mine Channel Steel Specification(KGS/M):25U, 29U, 36U Materials:20MnK, Q275 ... 12 Name of Products: U-beam of The Mine usage Channel Steel Specification(KGS/M):25U==24.76kgs/M, 29U==29kgs ... wish to cooperate with you for a long time. 25U-channel beam