The invention discloses a frock component used for each sub-section positioning and folding in ship manufacture process, which can speed up the sub-section positioning and folding speed and precision. The frock component comprises a U-shaped mouth in pothook-shaped used for hanging a tightening spiral button; wherein, an independent U-shaped mouth in an instance is arranged at the end of a cuboid component; the U-shaped mouths are a symmetrical pair arranged in the middle part of the cuboid part in another instance; furthermore, the facing direction of the angle between the two U-shaped mouths is reverse with the U-shaped mouth. The invention can be applied to boarded and tensile frock component and reduces the temporary cutting and welding procedure required by sub-section positioning and folding. When sub-section is positioned and folded, the tightening spiral button is combined with the frock component for application and the angle of the sub-section can be adjusted and sub-section can be sealed. The frock component can be used for adjusting the horizontal of the sub-section and for boarding and sealing the sub-section, thus improving the sub-section positioning and folding speed and precision and saving the working time by about 1/3 compared with the prior art.