12 # Miner's steel material: 20mnk Q235
12 # Miner Steel Model: 12 #
Height (h): 120mm
Leg width (b): 95mm
Waist thickness (d): 11mm
I-beam: specifications from 10 # -63 # Miner steel: specifications 9 # -12 #.
I-beam: mostly Q235 material Miner steel: 20MNk Q275 material
I-beams are commonly used for steel structures, supports, bridges, and simple supports.
Miner's steel is used for supporting steel structures in coal mines and used for strong support.