1.Specification(KGS/M):25U, 29U, 36U 2.Materials:20MnK, Q275 3.Length: 8, 9,10,12m ... of The Mine Channel Steel Specification(KGS/M):25U, 29U, 36U Materials:20MnK, Q275 8, 9,10 Or 12 Name of ... Specification(KGS/M):25U==24.76kgs/M, 29U==29kgs/M, 36U==35.87kgs/M Materials:20MnK, Q275 Length: 8, 9,10 ... keenly wish to cooperate with you for a long time. 36U-beam