An apparatus, a method and a drilling rig for installing pipes in ground

Apparatuses (102) for installing pipes (104, 106) in ground, the apparatus (102) being configured to install pipes (104, 106) connected to a drilling tool (110) and drill the drilling tool (110) into the ground (108) together with the pipes (104, 106). The apparatus (102) comprises a feed beam (112) attachable or connectable to a boom (114) of a drilling rig (116), the feed beam (112) comprising a guide (118) extending in a longitudinal direction (120); a feeder (122), the guide (118) being configured to hold and guide the feeder (122), the feeder (122) being movable in the longitudinal direction (120) in relation to the feed beam (112); a drilling machine (124) attached to the feeder (122) and movable in relation to the feed beam (112), the drilling machine (124) being configured to be attached to the drilling tool (110) by one or more drill rods (126, 128) which in a drilling operation extend inside one or a plurality of the pipes (104, 106) in the longitudinal direction (120); and a first arm (138) attached to the feed beam (112), the first arm (138) having a gripper (140) for gripping and/or holding the drill rod (126, 128), wherein the first arm (138) is movable in relation to the feed beam (112) between an inactive position and an active position, wherein in the active position of the first arm (138) the gripper (140) of the first arm (138) is configured to grip and/or hold the drill rod (126, 128). A drilling rig (116) for installing pipes (104, 106) in ground (108), wherein the drilling rig (116) comprises a boom (114) and such an apparatus (102). Methods associated with such an apparatus (102).