50-160mm PP pipe production line

Product General Information:

Commercial Terms of Products:

Description:

The PP-H pipe production line is a specialized equipment used for producing polypropylene homopolymer (PP-H) pipes. Through extrusion molding process, high-performance pipes can be produced, which are widely used in chemical, environmental protection, construction and other fields. The following is a detailed introduction to the PP-H pipe production line:

Composition of production line

Raw material processing system: including automatic vacuum feeder and hopper dryer. The automatic vacuum feeder can automatically transport PP-H raw materials to the hopper, avoiding raw material contamination; The hopper dryer is used to remove moisture from the raw materials and prevent defects such as bubbles in the pipes.

Extrusion system: A single screw extruder is usually used, and the screw structure is mostly of equal pitch and unequal depth gradient, with a length to diameter ratio of (25-30): 1 and a compression ratio of 2.5-4. After the extruder heats and melts the raw materials, they are extruded into shape through a mold. Molds are mostly straight through structures, and their dimensions are designed according to the specifications of the pipes.

Fixed cooling system: consisting of a vacuum sizing tank and an immersion cooling water tank. The vacuum sizing tank precisely shapes the outer diameter of the pipe through vacuum pressure, while the immersion cooling water tank sprays and cools the pipe rapidly, increasing its toughness and pressure resistance.

Traction system: The traction machine is used to uniformly pull the cooled pipe out, and its traction speed matches the extrusion speed to ensure uniform wall thickness and dimensional stability of the pipe.

Cutting system: using an automatic cutting machine, it can accurately cut the pipe according to the set length, with a smooth cut and no burrs.

Auxiliary equipment: including laser coding machine and flipping machine, etc. The laser coding machine can print production date, specifications, brand and other information on the pipes, while the flipping machine is used to collect and stack the cut pipes.

Features of the equipment

Efficient and energy-saving: By optimizing screw design and heating system control, the plasticization efficiency of materials has been improved, and energy consumption has been reduced. At the same time, the use of energy-saving motors and transmission devices reduces energy loss during equipment operation.

High precision control: Equipped with advanced temperature control, traction speed control, and wall thickness control systems, it can accurately control various parameters in the production process, ensuring the dimensional accuracy and stable performance of the pipes.

High degree of automation: It can achieve full automation control from raw material feeding, extrusion, cooling, traction, cutting to flipping, reducing manual operations and improving production efficiency and product quality consistency.

Strong adaptability: It can produce PP-H pipes of different specifications and wall thicknesses to meet the needs of different customers.

production process

Raw material preparation: Select PP-H particles with high purity and no impurities, and their melt flow rate is usually in the range of 0.2-0.4g/10min. After the raw materials enter the factory, strict sampling and testing are required before they can be put into production.

Extrusion molding: The dried raw materials are fed into an extruder, and the temperature of the feeding section of the barrel is controlled at 150-165 ℃, the plasticizing section at 170-180 ℃, and the homogenization section at 190-220 ℃. The molten raw material is extruded into shape through a mold driven by a screw.

Cooling and shaping: After the pipe is extruded, it enters the vacuum sizing tank and cooling water tank. By controlling the temperature and flow rate of the cooling water, the pipe is quickly cooled and shaped, while preventing the generation of internal stress.

Cutting: The cooled pipe is pulled by a tractor to the cutting machine and cut according to the set length. During cutting, the cutting speed and depth need to be controlled to ensure a smooth cut.

Application field

PP-H pipes have the advantages of strong corrosion resistance, high temperature resistance, and good impact resistance, and are widely used in the chemical industry for transporting corrosive media, environmental protection industry for sewage and exhaust gas treatment systems, construction industry for water supply and drainage pipelines, and food and beverage industry for material transportation.

Applications:

The PP-H (homopolymer polypropylene) pipes produced by the PP-H pipe production line have core characteristics such as strong acid and alkali resistance, high temperature resistance, creep resistance, strong rigidity, and long service life. They correspond to the precise adaptation of raw material forming needs of the production line, and the produced pipes can cover harsh working conditions in multiple fields. The specific application scenarios are as follows:

Chemical anti-corrosion transportation field (core application)

The chemical industry is the core application scenario for PP-H pipes, and the pipes produced by production lines have much higher corrosion resistance than ordinary PP pipes. They can withstand corrosion from most inorganic acids, organic acids, alkalis, and salt media, and have excellent high temperature resistance (long-term use temperature can reach 95 ℃). They are suitable for transporting corrosive materials such as hydrochloric acid, sulfuric acid, nitric acid, caustic soda, and ammonia water. Widely used in raw material transportation pipelines, chemical reaction kettle supporting pipelines, and acid-base waste discharge pipelines in chemical industrial parks, it adapts to the strict requirements of continuous operation in chemical production, eliminates the risk of pipeline corrosion and leakage, and ensures production safety.

Environmental water treatment field

Adapt to the full process requirements of water treatment in the environmental protection industry, covering industrial sewage treatment, municipal sewage pipeline network, garbage leachate transportation, and pure/ultra pure water preparation pipeline. PP-H pipes are resistant to acid, alkali, salt and microbial corrosion in sewage water, anti-aging, not easy to scale, low fluid resistance, and will not release harmful substances to pollute the water quality. They are not only suitable for the buried condition of municipal sewage collection and transmission, but also can meet the pressure requirements of industrial high concentration wastewater treatment. At the same time, they can be used in the reclaimed water reuse system, which conforms to the green and long-term application standards of the environmental protection industry.

Metallurgy and Electroplating Industry

For the special working conditions of the metallurgical and electroplating industries, the PP-H pipes produced by the production line can be adapted to transport media such as acid and alkali washing solutions, electroplating tank solutions, passivation solutions, and heavy metal containing wastewater during the smelting process. The working conditions in this field are mostly high temperature and strong corrosion. PP-H pipes have strong rigidity, temperature and pressure resistance, and the material is smooth and not easy to attach impurities, which can avoid pipeline blockage and corrosion damage, reduce maintenance costs in the later stage, and meet the needs of continuous operation in metallurgical and electroplating production lines.

Pharmaceutical and Food Light Industry Fields

PP-H pipes are non-toxic, odorless, and hygienic materials that comply with food and drug safety standards, and have temperature resistance that can meet the needs of low-temperature refrigeration to high-temperature transportation. The pipes produced by the production line can be used for the transportation of raw materials in the pharmaceutical industry, pharmaceutical wastewater treatment, and purified water transportation pipelines; In the field of food and light industry, it can adapt to the transportation of materials such as fruit juice, beverages, dairy products, as well as acid and alkali cleaning solution pipelines in the food processing process, to prevent material pollution and ensure product safety.

Municipal and building special pipelines

Different from ordinary water supply and drainage pipes, PP-H pipes are suitable for special working conditions in buildings and municipal engineering. Firstly, they are used for roof rainwater discharge and basement civil defense drainage. They have strong rigidity, impact resistance, and are not easily damaged by external forces; The second is the discharge of acidic and alkaline media in municipal engineering, as well as the auxiliary transportation of high-temperature hot water (such as auxiliary pipelines for secondary heating networks in residential areas); The third is the backup fire sprinkler pipeline for underground garages and factories, which has strong weather resistance and can be installed underground or overhead for long-term stable use.

Agriculture and new energy sectors

The acid alkali nutrient solution transportation and saline alkali land improvement irrigation pipeline suitable for large-scale planting in the agricultural field are resistant to soil corrosion and have a service life of over 50 years without frequent replacement; In the field of new energy (such as photovoltaics and lithium batteries), it can be used for photovoltaic cleaning, acid and alkali water transportation, and electrolyte raw material transportation pipelines in the lithium battery industry, adapting to the core requirements of corrosion resistance, safety, and long-term performance of pipelines in the new energy industry.

Specifications:

Competitive Advantage:

Specialized for PP-H Material, Excellent Molding Adaptability

Customized for the characteristics of PP-H homopolypropylene raw materials, the screw adopts high-wear-resistant alloy gradient structure with optimized aspect ratio of 28:1. The compression ratio precisely matches the melt characteristics of PP-H, realizing full and uniform plasticization, solving the molding problems of high rigidity and high melt viscosity of PP-H raw materials thoroughly, ensuring stable discharge without fluctuation, and avoiding pipe concave and cracking defects.

Precise Temperature Control, High Dimensional Accuracy

Equipped with multi-section intelligent temperature control system, temperature control error ≤±1℃, which accurately adapts to the segmented melting demand of PP-H raw materials at 150-220℃. Combined with vacuum sizing + graded spray cooling double shaping process, the outer diameter tolerance of pipes is controlled within ±0.3mm, and the wall thickness uniformity is ≥98%, fully meeting national standards and strict chemical industry standards, with no need for secondary finishing of finished products.

Stable & Efficient, Outstanding Mass Production Capacity

The whole machine adopts heavy-duty welded frame, running smoothly without jitter; core transmission components are equipped with precision gearboxes, enabling 24-hour continuous production. Full-process automatic closed-loop control realizes seamless linkage of feeding, extrusion, sizing, traction and cutting, with traction speed synchronization accuracy ≤±0.2m/min. The output of single line is 15%-20% higher than that of conventional models, and the qualified rate of finished products is stably above 99.5%.

Corrosion & Wear Resistance, Long Equipment Service Life

Parts in contact with raw materials (screw, barrel, mold) adopt nitriding treatment + wear-resistant coating technology, resistant to high-temperature friction loss of PP-H raw materials, corrosion-resistant and non-sticky, with service life 30% longer than ordinary models. Wear parts adopt standardized design, easy to replace, reducing later maintenance cost by 25%, adapting to the rigid demand of long-term continuous production of chemical pipes.

Intelligent & Convenient, Low Operation Threshold

Equipped with touch screen man-machine interaction system, production parameters (temperature, speed, cutting length) can be set with one key and displayed in real time, supporting parameter storage and call for quick mastery by novices. With self fault self-inspection and alarm prompt functions, it can predict equipment abnormalities in advance, reduce shutdown loss, no need for professional technicians on duty, and greatly save labor costs.

Energy Saving & Consumption Reduction, High Cost-Effectiveness

Adopt energy-saving heating coil + frequency conversion drive system, saving 18%-25% energy compared with traditional models; modular design of the whole machine can flexibly expand capacity (adapting to 20mm-1200mm full-caliber PP-H pipes) without replacing the whole machine, reducing later expansion and transformation costs, and balancing current mass production and long-term upgrading needs.