Home > Products > Weld Ends & Adaptors > Boom Pipe Weld Ends Boom Pipe Weld Ends Factory Part Numbers Recomended Components Warranty Factory Part Numbers Hevi Duty 148mm Length (in./mm) End Type 158-11903 158-11774 1.38 / 34.9 CCI Lined WE47D125U7 WE47M125U7 1.25 / 31.8 Double Wall WE48D125S7 WE48M125S7 1.25 / 31.8 Steel Recomended Components Twin-Wall™ Boom Pipe Single Wall Boom Pipe Twin-Wall™ Deck Pipe CCI-Lined Deck Pipe Ultra Plus Deck Pipe CCI-Lined Elbows CCI-Lined Backend Kit Warranty 3-year limited warranty on mechanical and structural components 2-year limited warranty on gasoline and diesel engines 2-year limited warranty on electrical and hydraulic systems 10-year limited warranty on exclusively designed ‘double ball’ slewing ring