(https://sv1.picz.in.th/images/2023/06/20/IV5aDN.jpg) (https://www.picz.in.th/image/8-resize.IV5aDN)
(https://sv1.picz.in.th/images/2023/06/20/IV5JES.jpg) (https://www.picz.in.th/image/9-resize.IV5JES)
(https://sv1.picz.in.th/images/2023/06/20/IV5mYg.jpg) (https://www.picz.in.th/image/10-resize.IV5mYg)
(https://sv1.picz.in.th/images/2023/06/20/IV5yRW.jpg) (https://www.picz.in.th/image/11-resize.IV5yRW)
(https://sv1.picz.in.th/images/2023/06/20/IV5IM1.jpg) (https://www.picz.in.th/image/12-resize.IV5IM1)
(https://sv1.picz.in.th/images/2023/06/20/IVEWwy.jpg) (https://www.picz.in.th/image/13-resize.IVEWwy)
ท่อสีไหน...ใช้กับงานประเภทไหน ความรู้คูช่าง