WELPING WP32TB series socket fusion welder is suitable for welding PPR, PB and PE plastic pipes and fittings of O.D. 20mm, 25mm and 32mm. And our WP63TB series socket fusion welder is suitable for welding PPR, PB and PE plastic pipes and fittings of O.D. 20mm, 25mm, 32mm, 40mm, 50mm and 63mm.