Can PPH equipment replace steel-lined plastic equipment?

Whether PPH equipment can replace steel-lined plastic equipment, in fact, there is no clear statement, it still needs to be determined according to the actual working conditions.


The PPH equipment adopts the spiral extrusion winding process. The PPH pellets are dried and self-absorbed into the hot melt section. After hot melting, a PPH plastic layer is formed in the extrusion section. The PPH plastic layer is overlapped on the mold, and the mold rotates at a certain speed. The fixed frame moves forward at a certain speed, so as to be wound in a semi-overlapping form.

The steel-lined plastic equipment adopts the rotomolding process, which is to weld the steel mesh (tortoise shell) on the surface of the steel body, using pure low density polyethylene (LLDPE) as the raw material, using the rotomolding process to organically combine the steel plate, the steel mesh and the polyethylene into one. , the polyethylene is firmly adhered to the surface of the steel body.

The choice between PPH equipment and steel-lined plastic equipment ultimately depends on the actual situation. The ultimate goal is to choose the most cost-effective equipment. The following is a comparison of the performance of pPH equipment and steel-lined plastic equipment.

Number	performance	Steel-lined plastic equipment (lined with polyethylene)	ppH equipment
1	Corrosion resistance	Polyethylene decision	Single material, except for strong oxidizing acids, other media can be used
2	Temperature resistance	Long-term use at 80°C Gap use does not exceed 90 ℃	Use temperature 90℃ Gap usage does not exceed 110°C
3	Pressure resistance	Withstand specification pressure	Normal pressure
4	UV resistance Weather resistance	Well, the outer layer of the equipment is made of steel, just do the anti-corrosion	Typically, this performance is enhanced by adding UV absorbers to the raw materials
5	Impact resistance	High mechanical strength	Good toughness, but brittle at low temperatures
6	Maintenance requirements	It needs to be maintained once at a certain interval and re-lined with plastic	No maintenance required
7	Environmental requirements	Avoid using in high temperature, high humidity and high corrosive environment	Strong environmental applicability
8	Production quality	It will appear that the iron element enters the solution and affects the quality of the product	Will not affect product quality
9	Price	high	Generally