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PVC-O Pipe Extrusion Line-High Speed

The OPVC pipe is a pipe produced by the bidirectional stretching process.The raw material formulation of the pipe is bascally the same as that of theordinary PVC-U pipe. The perfomance of the pipe produced by this proces is greatly improved compared with PVC-U pipe,the impact resitance of thepipe is improved by about 4 times,the toughness is maintained at minus -20 ” C, and the wall hickness of PVC-U pipe is reduced by alf under thesame pressure. About 47% of the raw material is saved, and a thinner wall thickness means that the pipes water conveying capacity is stronger, the pipes are lighter and more convenient to install, and the transportation cost is lower.Compared with the standard version OPVC pipe production line, the extruder ,mould and other equipment of the high-speed line have been adjusted, which has greatly improved the output. We have three lines for the pipe diameter from 90mm to 630mm.

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Pipe diameter: 90-630mm
Maximum Capacity: 1200kg/h

Product Description

● By stretching the PVC-U pipe produced by extrusion in both axial and radial directions, the long PVC molecular chains in the pipe are arranged in an orderly biaxial direction, so that the strenath, toughness and resistance of the PVC pipe can be improved. The performance of punching, fatigue resistance, and low temperature resistance has been greatly improved. The performance of the new pipe material(PVC-0) obtained by this process greatly exceeds that of the ordinary PVC-U pipe.

● Studies have shown that compared with PVC-U pipes, PVC-O pipes can greatly save raw material resources, reduce costs, improve the overall performance of the pipes, and lower the cost of pipe construction and installation.

Data Comparison

Between PVC-O pipes and other types of pipes

● The chart lists 4 different types of pipes (under 400mm diameter), namely cast iron pipes, HDPE pipes,PVC-U pipes and PVC-O 400 grade pipes. lt can be seen from the graph data that the raw material cost of cast iron pipes and HDPE pipes is the highest, which is basically the same.The unit weight of the castiron pipe K9 is the largest, which is more than 6 times that of the PVC-O pipe,which means that the transportation, construction and installation are extremely inconvenient, PVC-O pipes have the best data, the lowest raw material cost, the lightest weight,and the same tonnage of raw materials canproduce longer pipes.

Physical Index Parameters and Examples of PVC-O pipes

No.	Item	Item	Item
1	Pipe density	Kg/m3	1,350~1,460
2	PVC numerical polymerization degree	k	>64
3	Longitudinal tensile strength	Mpa	≥48
4	The longitudinal tensile strength of the power pipe is 58MPa, and the transverse direction is 65MPa	Mpa
5	Circumferential tensile strength, 400/450/500 grade	Mpa
6	Shore hardness, 20℃	HA	81~85
7	Vicat softening temperature	℃	≥80
8	Thermal conductivity	Kcal/mh°C	0.14~0.18
9	Dielectric strength	Kv/mm	20~40
10	Specific heat capacity, 20℃	cal/g℃	0.20~0.28
11	Dielectric constant,60Hz	C^2(N*M^2)	3.2~3.6
12	Resistivity, 20°C	Ω/cm	≥1016
13	Absolute roughness value(ka)	mm	0.007
14	Absolute roughness(Ra)	Ra	150
15	Pipe sealing ring
16	R port socket sealing ring hardness	IRHD	60±5

Comparison chart of hydraulic curve of plastic pipe

Relevant Standards for PVC-O pipes

Technical Parameter

Data comparison between ordinary lines and high-speed lines

Upgrated Points

● The main extruder cooperates with Krauss Maffei, with SIEMENS-ET200SP-CPU control system and the German BAUMULLER main motor.

● Added online integrated ultrasonic thickness measurement system to monitor the thickness of the preform pipe in real time, quickly and accurately assist in adjusting the thickness of the OPVC preform pipe.

● The structure of the die head and expansion mould is upgraded to match the needs of high-speed production.

● The whole line tanks are made into a double-layer structure to more accurately control the preform pipe temperature.

● Added insulation spraying and hot air heating to improve heating efficiency.