<p>Channel (50) for an underground chain or hauling conveyor comprises a lower trunk (2) and an upper trunk (3) for guiding the bucket of a drag chain, a welded frame construction (1) having side walls fixed together, a conveyor base (8), and channel-connecting devices. The side walls consist of rolled steel sections (10) with a constant, asymmetrical profile shape over the length of the channel. The rolled steel sections comprise a bottom arm (11) and a top arm (12) connected by an intermediate arm (13) provided with a bend (14) and having on its inner side a step for supporting and welding on at least one intermediate plate (40A) reinforcing the rolled steel sections on the frame construction. The upper intermediate arm section (16) above the bend is offset outward relative to the lower intermediate arm section (15) below the bend. Preferred Features: The intermediate arm section of the rolled steel section is provided with a second step for supporting the conveyor base. Preferably the upper surface (19) of the bend forms the second step.</p>
