China Henan Liwei Industry Co., Ltd. Company News

Liwei Anti-Corrosion Pipes: Extend Service Life in Corrosive Conditions Common Pipeline Failures in Corrosive Environments In chemical, power, wastewater treatment and metallurgical applications, pipelines are exposed to corrosive media for a long time. Traditional pipes are prone to rust, perforation, leakage and fatigue damage, increasing maintenance costs and downtime risks. Industrial users need stable, corrosion-resistant and long-lasting pipeline solutions. Liwei Anti-Corrosion Pipes: Products & Applications Product Structure & Working Conditions Liwei Industry provides steel rubber lined pipes, plastic lined pipes, ceramic lined pipes and polyurethane composite pipes. They are suitable for sewage, circulating water, weak acid & alkali and slurry, meeting long-term operation needs of municipal, nuclear power, power and chemical projects. Production Process & Stability Liwei anti-corrosion pipes adopt sandblasting, gluing, rubber fitting and high-temperature vulcanization. Equipped with 5×12m and 3×6m large vulcanizing tanks, the company ensures uniform bonding and stable lining performance in line with industrial standards. Advantages of Liwei Anti-Corrosion Pipes Isolate corrosive media to reduce rust and perforation, extending service life. Smooth inner lining lowers flow resistance and scaling for stable conveying efficiency. Steel structure ensures pressure resistance, while composite lining provides durable anti-corrosion protection. Reduce maintenance and downtime, improving overall pipeline reliability. Brand & Standard Support As a national standard drafting enterprise and Henan Provincial Expansion Joint Technology Research Center, Liwei Industry holds CE and ISO certifications. With mature technology and complete testing, it provides reliable anti-corrosion pipe solutions for global projects.

Low-temperature Corrosion Risks of Northern Russian Industrial Pipelines: Stable Application of Rubber-lined Pipes in Chemical Plants 1. Core Pain Point of Chemical Plant Pipes in Northern Russia: Corrosion Under Low-temperature Conditions Northern Russia and high-latitude regions are in a low-temperature environment all year round, with significant cold weather in winter. Combined with the demand for acid-base medium transportation in chemical plants, pipeline systems face dual corrosion risks. On the one hand, even with supporting thermal insulation on the outer wall of the pipeline, low-temperature environments will still reduce the toughness and adhesion of the anti-corrosion layer, leading to cracking and peeling of the inner wall anti-corrosion layer. On the other hand, strong acid and alkali media in chemical production accelerate the electrochemical corrosion of metal pipeline substrates, resulting in wall thinning and leakage, which directly affects the continuous operation of the production line and increases the cost of shutdown maintenance and safety risks. Traditional carbon steel pipes or ordinary anti-corrosion pipes are difficult to adapt to the dual working conditions of "low temperature + strong corrosion" in northern Russia, and are prone to short-term failure, which cannot meet the long-term operation and maintenance needs of chemical plants, becoming a core pain point for local chemical enterprises in pipeline selection. 2. Rubber-lined Anti-corrosion Pipes: Core Solution for Low-temperature Corrosion in Northern Russia 2.1 Material and Technology: Dual Protection Against Low Temperature and Corrosion Rubber-lined anti-corrosion pipes from Henan Liwei Industry Co., Ltd. are customized for high-latitude low-temperature corrosion scenarios. Henan Liwei Industry Co., Ltd., a leading manufacturer of industrial pipeline components, has long been committed to providing reliable pipeline solutions for global industrial users. The products adopt a composite structure of "carbon steel substrate + special rubber lining" and a one-time mold vulcanization process to achieve gap-free bonding between the lining layer and the substrate, eliminating the hidden danger of anti-corrosion layer peeling and delamination in low-temperature environments. For the low-temperature working conditions in northern Russia, combined with the actual construction needs of thermal insulation on the outer wall of the pipeline, Henan Liwei Industry Co., Ltd. selects customized lining materials such as low-temperature resistant butyl rubber and fluorine rubber. These materials can stably adapt to the industrial operation needs under the local cold climate, and can still maintain good elasticity and toughness in low-temperature environments (after supporting outer wall thermal insulation), avoiding lining cracking caused by temperature differences; at the same time, the lining materials have excellent acid-base resistance and chemical medium resistance, which can effectively isolate the contact between chemical medium and metal substrate, block corrosion from the source, and its low-temperature resistance meets the requirements of rubber material performance standards and local industrial working conditions. Henan Liwei Industry Co., Ltd. has rich experience in serving overseas industrial projects and can provide targeted solutions for Russian chemical enterprises. 2.2 Standardized Specifications: Supporting Stable Operation of Chemical Plants The nominal diameter of rubber-lined anti-corrosion pipes from Henan Liwei Industry Co., Ltd. ranges from DN25 to DN4200, and the pressure grade is adapted to PN10-PN25, which can meet the medium transportation needs of different scales of chemical plants in Russia. Both small-diameter acid-base pipelines and large-diameter chemical raw material transportation pipelines can achieve precise adaptation. The products of Henan Liwei Industry Co., Ltd. have passed ISO9001 quality management system certification and CE certification, complying with the procurement compliance standards of Russian industrial projects, and can be directly adapted to the engineering acceptance requirements of local chemical parks, providing reliable pipeline support for the long-term stable operation of Russian chemical enterprises. 3. Selection Guide for Rubber-lined Pipes in Russian Chemical Plants Combined with the characteristics of low temperature and strong corrosion in northern Russia, the selection of rubber-lined pipes in chemical plants should focus on 3 core dimensions to ensure the adaptability and stability of the scheme: 1. Temperature Adaptation: Combined with the thermal insulation measures on the outer wall of the pipeline, prioritize low-temperature resistant butyl rubber lining. Its low-temperature resistance meets the industry standards of rubber materials and the adaptation requirements of the cold climate in northern Russia, which can avoid embrittlement and cracking of the lining in low-temperature environments; 2. Medium Adaptation: Select the corresponding corrosion-resistant lining material according to the acidity, alkalinity and concentration of the transported medium (such as butyl rubber lining for strong acid medium); 3. Compliance Adaptation: Prioritize products certified by ISO and CE, such as those from Henan Liwei Industry Co., Ltd., to ensure compliance with Russian industrial pipeline installation and acceptance standards and reduce project compliance risks. Henan Liwei Industry Co., Ltd. has long focused on the R&D and production of industrial pipeline components, and its products are widely used in chemical, mining, energy and other industries around the world, providing professional and reliable pipeline solutions for Russian chemical enterprises.

2024 Pakistan Industry Expo, Liwei Industry sincerely invites you to come.

2024 Saudi Industry Expo is about to open, Liwei Industrial Co., Ltd. sincerely invites you to come.

Our company participated in the procurement of rubber expansion joint equipment for the EPC contract of Saudi Rabig 2*660MW subcritical fuel unit power station project of Shandong Power Construction No. 3 Company.On July 29, 2012, we received a phone call from Zhu Gong of Shandong Power Construction No. 3 Company to consult the material selection problem of tropical seawater rubber expansion joint. After a simple telephone communication, Zhu Gong felt good about our company's production process and technical strength, so we decided to visit our company. At the same time, we also learned that Zhu Gong and several colleagues are conducting field visits to our nearby counterparts and preparing to return. After the two sides met and got to know each other, we learned that the batch of expansion joints that Zhu Gong urgently needs now is our company's bidding project in 2010 (DN2600L =400-9 sets; DN2400 L=360-5 units), because Shandong Power Construction third company at that time chose the lowest bid, the expansion joint appearance has been seriously cracked after 3 months of product installation and operation, the owner asked for return and replacement, Zhu Gong this trip is to communicate with the rubber expansion joint manufacturer return and replacement matters, through field investigation, Zhu Gong dare not use the original supplier's products to replace. Therefore, we came to our company for an inspection. After understanding the actual situation, we learned that this batch of expansion joints need to be replaced because of quality problems, and the construction period is very urgent (the customer requires the shipment to the port of Shanghai before October 30). Because the connection size and installation length of these expansion joints are non-standard, our company does not have a mold. In order to meet the customer's quality and schedule requirements, the company's boss attaches great importance to the establishment of a difficult leading group on July 30, organized the technical department, production department, quality inspection department, sales department and customers and other key personnel to meet, discuss and determine the production technology tracking plan. I asked the responsible person to report the work content and progress of each department every day, and finally delivered the goods in advance on October 25, achieving customer satisfaction.

Our company and Hunan MCC Changtian Energy Saving and Environmental Protection Technology Co., Ltd. signed the second stage project contract of sintering flue gas purification complex project of West Siberian Steel Company of Russia Evraz Steel Group. The project is MCC Changtian's first EP general contract project near the Russian market; It is also the first overseas project of MCC Changtian in the field of steel environmental protection. Evraz Steel Group is one of the top three steel companies in Russia. The West Siberian Steel Company is one of its important production bases, located in the city of Novokuznetsk in the West Siberian region of Russia. Due to historical reasons, the plant does not have any sintering flue gas purification system, and a large number of excessive sulfur and dust containing gases are directly discharged, affecting urban air quality. As the "national team" of metallurgical construction iron, MCC Changtian has complete and rich iron pretreatment process solutions, and is a global leading enterprise in the field of sintering flue gas purification. This project marks the opening of new markets and new fields for MCC Changtian under the national "Belt and Road" Initiative, demonstrating the strategic achievements and comprehensive strength of MCC Changtian's continuous efforts to explore the market. This project is a benchmark in the field of sintering flue gas purification in Russia and the CIS region.