Name of Products: U-beam of The Mine Channel Steel Specification(KGS/M):25U, 29U, 36U Materials:20MnK, Q275 8, 9,10 Or 12 Name of Products: U-beam of The Mine usage Channel Steel Specification(KGS/M):25U==24.76kgs/M, 29U==29kgs/M, 36U==35.87kgs/M Materials:20MnK, Q275 Length: 8, 9,10 Or 12 Meters