Poly and FRP Piping Installation AJM United have poly welding machines up to 960mm in diameter. We have qualified operators who have had many years experienced of the field. Call out Service Learn more about how to Register to our 24hr Enquire Here Call our On-Site Works Division and our friendly staff will be happy to assist you with any queries. Contact Us On-Site Works DivisionCivil Works Conveyor and Chute Installation Ducts, Tanks & Vessels Inspection & Testing Mechanical Installation Piping & Inline Equipment Installation Poly and FRP Piping Installation Roads & Infrastructure Structural Steel Installation