The utility model relates to a group is to anchor clamps suitable for pipeline welding of different wall thickness nuclear level, including the scale, down the group to the piece, go up the group to the piece, the scale has a pilot hole, down the group to the piece and attend the group arrange the scale pilot hole in to the piece in realization group right. The utility model discloses a dysmorphism pilot hole and group to the piece realized the accurate positioning, fast organize right, and adopt anchor clamps, alone can accomplish different wall thicknesss nuclear equipment barrel and pipeline dress card, organize right, its simple structure, the cost that has maintained convenient to use, very big saving.