Based on fully assimilating and digesting European technology, our company has successfully developed a hollow-wall winding pipe production line. The pipes produced use high-density polyethylene (PE) as the main raw material. First, a rectangular pipe is extruded by the first extruder into the winding forming machine, while the second extruder sprays adhesive strips, which are then extruded and compounded. The inner and outer walls of these pipes are smooth and flat, with specifications ranging from Φ200 toΦ2800mm. 
Dependingon different usage conditions, the ring stiffness is classified into four grades, with the highest reaching 16KN/m², and they can withstand acidic and alkaline liquids below 10%. These pipes possess advantages such as corrosion resistance, light weight, easy installation, high flow capacity, and long service life (50 years). They can replace high-energy-consuming materials (such as cement, cast iron, and ceramics) and are widely used in drainage and sewage systems in highways, municipal construction, residential communities, sports fields, squares, mines, agriculture, culverts, bridges, and other fields.

Model	Pipe Dia	Extruder		Total	Max.	Overall
				Volume	Capacity	Dimension(m)
		Model	Power(kW)		(kg/h)
CRG800	200-800	SJ75x33	110	230	400	24x10x3
		SJ65x30	37
CRG1200	300-1200	SJ75x33	110	260	550	30x13x5
		SJ65x30	37
CRG1600	800-1600	SJ90x33	160	350	650	32x14x6
		SJ65x30	55
CRG2200	1200-2200	SJ120x33	250	520	750	36x16x8
		SJ75x30	90
CRG3000	2200-3000	SJ120x33	280	620	900	36x16x8
		SJ75x30	110