About Us | Jianlong Plastic

Jianlong Plastic－32 Years Specializing in Customized Processing of Plastic Pipes and Fittings.

jianlongplastic@gmail.com +86 17860052961

About Jianlong Plastic

Founded in 1992, Shandong Jianlong Plastic Co., Ltd. is located in the Industrial Park of Jiaoshan Town, Ju County, Rizhao City, Shandong Province, covering an area of more than 100 mu. As a leading enterprise in the large-scale plastic pipeline industry in China, the company has been deeply engaged in the industry for more than 30 years. With the core of "industry, academia, and research" collaborative innovation, it has established an automated and intelligent production system, ranking among the top in the region in terms of comprehensive strength, and its products are sold at home and abroad.

The company focuses on the research, development, and production of high-performance plastic pipes and fittings such as PVC-U, PP-R, HDPE, and MPP, with an annual production capacity of 35,000 tons. Its products cover diverse fields including construction, agriculture, municipal engineering, and mining. Relying on platforms such as the "Rizhao High-performance Plastic Pipeline Engineering Technology Center", the company has broken through key technologies such as lead-free environmental protection materials and corrosion-resistant formulations, and has obtained dozens of patents. The products' performance in terms of pressure resistance, flame retardancy, etc. far exceeds national standards.

The company has introduced advanced production lines at home and abroad, achieving flexible production and efficiently undertaking both large-volume orders and personalized customization requirements. Equipped with an intelligent detection system and a professional laboratory, and having passed authoritative certifications such as ISO 9001 and ISO 14001, it ensures the product yield rate and delivery timeliness.

Build a globally trusted brand

The domestic sales network covers more than 20 provinces and cities, and with the help of the Belt and Road Initiative, the company has expanded to markets in Southeast Asia, the Middle East, the Americas, and other regions. With the core of "full-process service", it integrates the supply chain and logistics system, providing one-stop solutions from demand docking to construction support, and offering supporting technical training and after-sales maintenance to enhance customer value.

The company has been recognized as a high-tech enterprise, a provincial-level specialized, sophisticated, unique, and new enterprise, one of the top ten brands of pipe materials in China, etc., and has passed a number of authoritative certifications such as the China Environmental Labeling Product Certification and the Coal Safety Certification. Adhering to the concept of "Virtue Carries All Things, Considering the Interests of Others", the company continues to promote green manufacturing, reduce energy consumption and carbon emissions, and practice ESG sustainable development.

In the future, Jianlong Plastic will continue to drive industrial upgrading through innovation, build brand trust with quality, provide high-value-added solutions for global users, and contribute to the high-quality development of the plastic industry and the regional economy.

Our Factory

The company is equipped with domestically advanced automated and intelligent production lines, which not only ensure production efficiency, but also ensure the stability and consistency of product quality, providing a solid production foundation for customized services.

Detailed Production Process of Shandong Jianlong Plastic Co., Ltd.

Since its establishment in 1992, after thirty-two years of development, Shandong Jianlong Plastic Co., Ltd. has become a leader in the production and operation of large plastic pipes in China. Relying on advanced equipment, exquisite technology and strict management, the company has constructed an intelligent, scientific and perfect production process. Every link, from raw material proportioning to product packaging, is strictly controlled to ensure the provision of high-quality plastic pipe and fitting products for customers. The following is a detailed introduction to the company's production process:

01 - Raw Material Proportioning

For different types of plastic pipes and fittings, such as PVC-U, PP-R, HDPE, PE-RT, etc., the company carefully selects high-quality raw materials such as polymer resins, additives, and fillers according to their performance requirements and quality standards. In the proportioning process, advanced measuring equipment and an accurate formula management system are used to strictly control the proportion of each raw material to ensure the consistency of product performance and quality. In addition, the company continuously researches and applies new environmentally friendly raw materials to meet the market's demand for green and environmentally friendly products.

02 - Automatic Feeding

After the raw material proportioning is completed, it is directly supplied to the extrusion equipment through the closed pipeline automatic feeding system to eliminate transportation pollution and loss. The system intelligently matches the production rhythm of the extruder and automatically adjusts the feeding speed according to the consumption of raw materials to ensure continuous feeding. The feeding system has a built-in automatic alarm device that provides an immediate warning in case of raw material shortage or transportation failure to ensure smooth production.

03 - Extrusion Molding

The company has dozens of first-class fully automatic pipe production extrusion lines, integrating high-efficiency and energy-saving extrusion technology. In production, raw materials are molded through molds after being plastified at high temperatures. The modular intelligent control system accurately adjusts parameters such as temperature, pressure, and rotation speed to ensure process stability and product quality. Continuously optimize the process to achieve a double improvement in extrusion efficiency and quality.

04 - Vacuum Sizing

After the pipe and fitting are extruded and molded, they immediately enter the vacuum sizing device. The outer wall is made to fit the sizing sleeve through vacuum negative pressure. The advanced cooling and vacuum control system accurately controls temperature and pressure parameters to quickly shape and ensure the dimensional accuracy and roundness of the pipe diameter. In addition, multi-specification customized sizing sleeves are provided to meet the diverse needs of customers.

05 - Spray Cooling

The pipe and fitting after vacuum sizing continue to enter the spray cooling system. Through evenly distributed spray nozzles, all-round spray cooling is carried out to cool down to room temperature to accelerate curing and stabilize performance. During the cooling process, the system uses circulating water cooling to take into account both cooling effect and water conservation. The company strictly controls parameters such as water temperature and spray pressure to ensure stable cooling quality.

06 - Traction

The cooled pipe or fitting is evenly pulled by the tractor. Its advanced servo motor drive system accurately controls the speed and traction force to avoid deformation and fracture of the pipe or fitting. The automatic deviation correction device equipped on the tractor corrects the deviation of the pipe or fitting in real time during the traction process to ensure product straightness and dimensional accuracy. The company can also flexibly adjust traction parameters according to product needs to meet customer's customized requirements for length and quality.

07 - Cutting

After the pipe or fitting is pulled to the specified length, it is accurately cut by cutting equipment. First, advanced cutting technology is used to cut the pipe or fitting to the required length. The incision is flat without burrs and cracks. The cutting equipment also has automatic length setting and counting functions, and the cutting length and quantity can be adjusted as needed to improve efficiency.

08 - Inspection and Storage

The cut pipe or fitting immediately enters the inspection link. The company has dozens of sets of testing and inspection equipment to conduct comprehensive detection and testing on various technical parameters of pipes and fittings, including pressure resistance performance, burst strength, softening temperature, tensile performance, impact performance, dimensional accuracy, etc. Only products that pass strict inspection can enter the warehouse for storage to ensure that the quality of warehoused products meets international high standards.

09 - Packaging

For pipe and fitting products that pass inspection, the company uses professional packaging equipment and materials for packaging. According to product specifications and customer requirements, appropriate packaging methods such as winding packaging and carton packaging are selected, and information such as specifications, models, quantity, and production date is clearly marked. The entire packaging process strictly adheres to quality standards to ensure that the products are not damaged during transportation and storage and to provide customers with a high-quality product delivery experience.

Company CEO Dong Quanling

Dong Quanling, the general manager of Shandong Jianlong Plastic Co., Ltd., is also a deputy to the Rizhao Municipal People's Congress. She has rich experience and remarkable achievements in the plastic pipe industry. Under her leadership, the company has developed into a large domestic plastic pipe production and operation enterprise, and its comprehensive strength ranks at the forefront of the same industry in the region.

Dong Quanling attaches great importance to enterprise technological innovation and sustainable development. She leads the company to cooperate deeply with universities and scientific research institutions. Relying on advanced platforms such as the Rizhao High-performance Plastic Pipe Engineering Technology Center, she has developed differentiated technologies such as environmentally friendly lead-free materials and corrosion-resistant formulas, improving product performance. She actively responds to the green development trend and leads the company to produce environmentally friendly green and healthy products, reducing energy consumption and carbon emissions.

With her professional management ability, keen market insight and strong sense of social responsibility, she makes important contributions to the development of the plastic industry.

Professional Team

The company has been deeply involved in the industry for more than 30 years. With the collaborative innovation of "production, learning and research" as the core, it has built an automated and intelligent production system. Its comprehensive strength ranks among the top in the region, and its products are sold at home and abroad.

Production Team: Intelligent manufacturing, efficient delivery.

The team takes intelligence and automation as the core, is equipped with advanced domestic pipe production lines and high-precision injection molding equipment, and has established a production system covering multiple categories of plastic pipes such as PVC-U, HDPE, and PP-R. Through modular process design and flexible production management, the annual production capacity reaches 35,000 tons. Team members are experienced and cover process engineers, equipment operation and maintenance experts, and production management backbones, meeting the needs of diversified scenarios such as construction, municipal administration, and mines.

Quality Control Team: Rigorous Standards, Excellence in Detail

The quality inspection team aims at "zero defect". Relying on dozens of sets of advanced testing equipment, it has constructed a whole-chain quality control system from raw material inspection, process monitoring to finished product inspection. The equipped professional laboratory is linked with the detection system to ensure that the compression resistance, flame retardancy and other properties of products meet national standards. Team members strictly implement the ISO 9001 standard and have obtained many authoritative certifications such as the China Environmental Label. With precise detection capabilities, the team guarantees a 100% pass rate for products leaving the factory. Continuously optimized by data-driven methods, it has laid a solid quality foundation for the Jianlong brand.

R&D Team: Innovation-Driven, Technological Breakthroughs

The R & D team relies on the Rizhao High-performance Plastic Pipeline Engineering Technology Center and cooperates with industry-university-research platforms of universities such as Shandong University, focusing on the research and development of environmentally friendly, energy-saving and high-performance materials. The team gathers highly educated professionals. It has conquered key technologies such as lead-free environmental protection materials and obtained dozens of national patents. The team continuously promotes the technological upgrading of the industry and helps the company firmly stay at the technological forefront in the field of plastic pipelines.

Professional after-sales team

The team members have high professional qualities. The all-weather and multi-channel service system, through telephone, email, instant messaging software, etc., ensures that customer inquiries and problem feedback can be responded to in the first time. No matter which country or region the customer is in, they can enjoy convenient and efficient communication services. The team also regularly conducts customer return visits to collect product usage feedback and continuously optimizes product performance and service processes based on the feedback. With professional, efficient and considerate services, it provides all-round after-sales guarantee for customers.

Our Certifcations

Equipped with intelligent testing systems and professional laboratories, it has passed authoritative certifications such as ISO 9001 and ISO 14001 to ensure product yield and delivery timeliness.

Committed to providing customers with the best customized services

E-MAIL US

jianlongplastic@gmail.com

SUPPORT 24/7

+86 17860052961

CONTACT

Manager Wang

The company has a comprehensive range of products and a complete range of pipes and fittings, and can provide customers with one-stop, all-round pipeline customization and production and sales supply.

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Contact: Manager Wang

Tel: +86 17860052961

E-mail: jianlongplastic@gmail.com

Address: Jinger Road, Jiaoshan Town, Ju County, Rizhao City, Shandong Province