... throat beam clamp,wide throat beam clamp,universal beam clamp. size :M8,M10,M12 are available. malleable iron.black small throat beam clamp,wide throat beam clamp,universal beam clamp.size ... :M8,M10,M12 are available.malleable iron.black Designed load of cast steel clamp: ... drawings or samples6)Designed load of cast steel clamp: 3.7kN