An alignment system comprising: a laser transmission unit configured for engagement with a first roller stand , the laser transmission unit comprising: a first front plate defining a first laser transmission hole therethrough, a first back plate axially spaced from the first front plate, a first arcuate panel extending axially between the first front plate and the first back plate and being configured to contact a first pair of roller wheels of the first roller stand, and a laser centrally mounted through the first back plate and extending to the first front plate, such that a laser beam produced by the laser is transmitted through the first laser transmission hole of the first front plate; and a target unit configured for engagement with a second roller stand axially spaced from the first roller stand, the target unit comprising: a second front plate defining a second laser transmission hole therethrough, a second back plate axially spaced from the second front plate and being provided with an image of a target, the target having a center aligned with the second laser transmission hole, and a second arcuate panel extending axially between the second front plate and the second back plate and being configured to contact a second pair of roller wheels of the second roller stand; wherein, when a laser beam from the laser transmission unit passes through the second laser transmission hole of the second front plate and reaches the center of the target on the second back plate, the first roller stand and the second roller stand are aligned. a laser transmission unit configured for engagement with a first roller stand , the laser transmission unit comprising: a first front plate defining a first laser transmission hole therethrough, a first back plate axially spaced from the first front plate, a first arcuate panel extending axially between the first front plate and the first back plate and being configured to contact a first pair of roller wheels of the first roller stand, and a laser centrally mounted through the first back plate and extending to the first front plate, such that a laser beam produced by the laser is transmitted through the first laser transmission hole of the first front plate; and a first front plate defining a first laser transmission hole therethrough, a first back plate axially spaced from the first front plate, a first arcuate panel extending axially between the first front plate and the first back plate and being configured to contact a first pair of roller wheels of the first roller stand, and a laser centrally mounted through the first back plate and extending to the first front plate, such that a laser beam produced by the laser is transmitted through the first laser transmission hole of the first front plate; and a target unit configured for engagement with a second roller stand axially spaced from the first roller stand, the target unit comprising: a second front plate defining a second laser transmission hole therethrough, a second back plate axially spaced from the second front plate and being provided with an image of a target, the target having a center aligned with the second laser transmission hole, and a second arcuate panel extending axially between the second front plate and the second back plate and being configured to contact a second pair of roller wheels of a second front plate defining a second laser transmission hole therethrough, a second back plate axially spaced from the second front plate and being provided with an image of a target, the target having a center aligned with the second laser transmission hole, and a second arcuate panel extending axially between the second front plate and the second back plate and being configured to contact a second pair of roller wheels of the second roller stand; <EOS>