Quality Ring Rolling Machine & Vertical Ring Rolling Machine factory

Our spiral welded pipe unit has many advantages such as stable forming, high degree of automation, low energy consumption, and high production efficiency. The pipe products produced by this unit have been applied in multiple industrial and infrastructure fields due to their stable performance.The steel pipes produced by this unit are suitable for various scenarios:High and low pressure fluid conveying pipes: high strength, able to withstand large impact forces, smooth inner walls, and high transportation efficiency.Pile pipes for urban construction: used for supporting and framing building structures to ensure project safety and stability.Industrial structural pipes: resistant to high temperature and corrosion, can be used in harsh environments, and have a short construction period.Electricity/heat/gas pipelines: not easily deformed or broken, long service life, strong sealing, ensuring safe operation of pipelines.The pipes produced by this unit have been successfully applied in multiple projects, and their performance meets the core requirements of customers for project progress and quality. We will continue to optimize our equipment and processes to better serve the market.

The company has developed and produced multiple series and specifications of D51 and D53K ring rolling machines. The D51 series vertical ring rolling machine has the advantages of small size, compact structure, material saving, and energy saving, and is widely used for hot rolling of various ring blanks in industries such as bearing forging, automotive gears, and flange manufacturing.The D53K series CNC horizontal ring rolling machine has the advantages of advanced structure, digital program control, high degree of automation, high production efficiency, material saving, and energy saving. The D53K CNC ring rolling machine has the function of radial and axial bi-directional composite rolling. Thank you for purchasing the series of products from Shandong Duolek Heavy Industry Machinery Co., Ltd. We would like to express our sincere gratitude to you! In order to protect your legitimate rights and interests and relieve your worries, we make the following warranty service commitments to you and provide you with the following services:01. The company strictly selects reasonable solutions in accordance with national standards, contracts, and technical specifications, and comprehensively tracks, monitors, inspects, and guarantees product quality;  02. The company provides a one-year warranty period for all products. After the warranty period expires, maintenance services will still be provided and corresponding maintenance fees will be charged depending on the situation;For all products sold by our company, we will provide users with product manuals, product certificates, packing lists, and related technical information, and provide free training for user operators.If customers find that the product cannot be used normally during the use of the product, they can immediately consult our after-sales service department to understand the product model, specifications, usage environment, faults, purchase date, and service requirements. After the after-sales service department makes suggestions, if it cannot be solved, they will send someone or do other handling.If you want to learn more, please feel free to let us know!

Recently, our company's CNC vertical ring rolling machine has successfully completed all installation and commissioning work, with excellent performance indicators. It will be officially shipped and delivered to customers in the near future.This device integrates high rigidity, high precision, and intelligence, marking a further enhancement of our company's strength in the field of high-end ring forging equipment manufacturing. After the equipment is shipped, our engineering team will go to the customer's site to provide full technical support to ensure the smooth production of the equipment.Crafted with ingenuity, ready to go. Our company will continue to provide high-quality equipment to help customers create greater value.

The automated production line of the ring rolling machine developed and produced by Dorco Heavy Industries has officially entered production at the customer's factory. In the recent routine follow-up, the customer expressed great recognition of the performance, accuracy, and stability of the equipment.The client also specifically mentioned the communication and cooperation attitude of our team, and expressed that their cooperation with us has made them very happy.We have always adhered to the customer-centric philosophy, always listening to our customers' needs and feedback, and striving to provide satisfactory solutions for them. Our team always maintains efficient and friendly communication and cooperation attitude.If you are interested in our ring rolling machine automation equipment, please feel free to contact us at any time. We look forward to providing you with more services and support.

Recently, our high-performance D51K-630 CNC vertical ring rolling machine has been officially loaded and shipped to the customer's production base after completing strict factory inspection and debugging. This equipment will be used for the rolling and forming of precision ring forgings, and is widely used in the manufacturing of key components such as wind turbine flanges, bearing rings, and gear rings.D51K-630 is our main model, which integrates advanced technologies such as digital control, high-precision rolling, and intelligent detection. It has the advantages of strong rigidity, high precision, and good reliability, which can significantly improve the material utilization rate and forming quality of ring production, and help customers enhance their market competitiveness.Thank you for your trust in our products and services. We are always committed to providing customers with high-performance rolling solutions and full cycle technical support. We look forward to this cooperation creating tangible value for our clients and laying the foundation for further deepening our collaboration.I sincerely wish the equipment to be put into operation and run smoothly as soon as possible! Join hands for mutual benefit and achieve new success!

During a recent routine follow-up visit, I saw that the DUOLEK horizontal ring rolling machine was working in an orderly manner in the busy forging workshop of the customer. Since the installation and debugging were completed, the equipment has been running smoothly and is responsible for the rolling and expanding tasks of the customer's core ring products.On site, it can be seen that the entire processing process from the heated billet to the formed ring is smooth and coherent, with low equipment noise and vibration, demonstrating excellent mechanical stability.The most satisfying aspect of this device for us is its stability, "said the on-site project manager of the customer." It can continuously produce products with consistent dimensional accuracy, providing us with strong support to ensure the smooth progress of subsequent processes and effectively meeting our production pace requirementsThe stable operation of this equipment fully reflects the core design advantages of our horizontal ring rolling machine:High rigidity structure: Optimized bed and frame design ensures geometric accuracy retention under long-term heavy load conditions.Precise control system: A stable control system ensures the repeated positioning accuracy of the rolling process and guarantees product consistency.Adopting servo drive and energy-saving hydraulic system, with low energy consumption and strong stability; The modular structure is easy to maintain and the key components have a long lifespan, laying a solid foundation for the long-term trouble free operation of the equipment.The stable operation of the customer's on-site equipment is the strongest proof of the quality and performance of DUOLEK horizontal ring rolling machine products.If you are interested in our horizontal ring rolling machine, please feel free to contact me at any time. We look forward to providing you with more services and support.

An efficient and reliable spiral welded pipe production line not only relies on precision forming and welding hosts, but also on a series of powerful auxiliary equipment.These devices are mainly responsible for end face precision machining, quality inspection, and performance testing of formed welded pipes, which is a key guarantee to ensure that the final product fully meets strict industrial standards in terms of dimensional accuracy, end face quality, pressure bearing capacity, and internal integrity. They together constitute an indispensable finishing and quality inspection process in automated steel pipe production.Fully automatic steel pipe hydrostatic testing machineThe hydraulic testing machine is mainly used for pressure testing of welded pipes, and has the functions of computer recording, storage, printing, and test results.It has the advantages of high efficiency, high testing pressure, and strong safety.The range of pipe diameter is from 20 to 3500mm, and the test pressure is 10-110MPa.Process flow: upper pipe - connecting pipe - water filling - pressure pressing - pressure holding - pressure relief - drainage - outlet pipe. Fully automatic flat head chamfering machine:The flat head chamfering machine is mainly used for flattening and chamfering the ends of welded pipes. Equipped with a contour chamfering knife, the processed groove is uniform and beautiful. Our company provides flat head chamfering machines for steel pipe production enterprisesProcessing range covers steel pipe diameter:φ20mm-φ3500mm, Simultaneously meet standards such as API-5L, API-5CT, BS1387-85, ASTM, GB9711, etc.Process flow: upper pipe - connecting pipe - clamping - flat head chamfering - releasing fixture - outlet pipe Ultrasonic flaw detector:Take the initiative to alarm and spray marks if there are shortcomings, and workers adjust parameters accordingly;The parts with continuous ultrasonic testing marks on the weld seam shall undergo manual ultrasonic and X-ray re inspection again;Defects will be repaired and undergo non-destructive testing again until they are confirmed to be cleared; X-ray steel pipe inspection:The detection system seamlessly integrates with the entire production line, adapting to the control and management process requirements of steel pipe manufacturers.Welding seam automatic recognition technology facilitates automatic control during the preparation stage of inspection; With a database, the detection parameters of the same product can be automatically loaded with just one click, and the entire system has a high degree of automation.

Our fully automatic ultrasonic testing equipment is designed specifically for quality inspection of spiral welded pipes.Take the initiative to alarm and spray marks if there are shortcomings, and workers adjust parameters accordingly;The parts with continuous ultrasonic testing marks on the weld seam shall undergo manual ultrasonic and X-ray re inspection again;Defects will be repaired and undergo non-destructive testing again until they are confirmed to be cleared;The application of ultrasonic automatic flaw detection equipment will greatly improve the quality control efficiency and reliability of spiral welded pipe production lines, providing strong technical support for ensuring product safety in key areas such as oil and gas transportation and structural engineering.If you would like to learn more technical details or obtain customized solutions, please feel free to contact us at any time.

The spiral welded pipe production line is a standardized finalization unit developed and improved by Duolek Heavy Industries, based on absorbing the essence of foreign forming technology and combining with the actual situation in China. It is the most competitive and mature unit with technical characteristics that are the most advanced of  Duolek Heavy Industries.  Our strong points are: Adopting double swing bridge technology, the swing is reasonable, saving space and improving production efficiency Conduct strict physical and chemical inspections on raw materials to ensure product quality Adopting advanced welding processes and equipment to ensure stable welding quality Adopting non-destructive testing techniques such as ultrasound and X-ray to ensure the quality of welds After a strict inspection system, it is ensured that the pipe production process is qualified before production can begin The unit accessories are sourced from internationally renowned brands such as Lincoln welding machines from the United States and Siemens motors, ensuring the stability and reliability of the equipment  The Duolek spiral welded pipe production line can meet the needs of different industries and provide customers with high-quality products and solutions.

The numerical control system has many highlights:Use electronic handwheel for operation.It can achieve multifunctional and multi station rolling.Input the dimensions of the ring and blank, and automatically generate the rolling curve.Easy to operate, only one electronic handwheel is needed to complete the entire rolling process.The dual screen displays the working status, and the new console has a wide field of view.Automatic CAR operation mode, the rolling process automatically matches the radial and axial rolling according to the rolling curve.