Qingdao Qingflex Hose Factory, located in Qingdao, the core base of China's rubber industry, is a high-tech enterprise in China that focuses on the research, development, production, sales and service of fluid transmission hoses. It is also one of the few benchmark enterprises in the industry with the ability to manufacture a full industrial chain of high-end hoses of multiple categories. Having cultivated the fluid transfer field for many years, Qingflex has always focused on technological innovation and adhered to quality standards. Following the development needs of global high-end equipment, new energy, marine engineering, and oil extraction, Qingflex continuously optimizes its industrial layout and has now established a professional operating system with five business divisions working in synergy: Hydraulic Hose Division, Oilfield Hose Division, Plasti Hose Division, Floating Hose Division, Cooling Hose and 

Coupling Division, Each division independently focuses on its specific fields, while sharing technologies and resources to comprehensively meet the diverse and customized fluid transfer solution needs of global customers. With its strong product capabilities and comprehensive service system, Qingflex® and its brands AlienFrac® , Kingpulse® , Impulmax® , AlienSpir , ProCooling, and Getsaf are sold to many countries and regions worldwide, making it a highly recognized professional manufacturer of fluid transfer hoses in the industry.

  

Core Corporate Strategy: Specialized and In-depth Development of five Business Divisions

 

I. Hydraulic Hose Division

Hydraulic Hose Division is a traditional strength of Qingflex, deeply rooted in the field of hydraulic fluid transmission for decades. Qingflex focuses on the R&D and manufacturing of hydraulic hoses and assemblies of all specifications and standards. Products cover a full range, including steel wire braided hydraulic hoses, steel wire spiral hydraulic hoses, mining hydraulic hoses, and rail transit-specific hoses, fully compatible with mainstream domestic and international standards such as DIN, SAE, GB, and JIS. The division possesses mature production processes and a rigorous quality control system. The products boast core advantages such as high pressure resistance, good flexibility, oil and temperature resistance, aging resistance, and long impulse life, and are widely used in engineering machinery, mining and metallurgy, agricultural equipment, rail transit, shipbuilding, and industrial hydraulic systems. From standard general-purpose hydraulic hoses to customized hydraulic hose assemblies, it can meet the personalized needs of different industries and working conditions. Qingflex is one of the domestic suppliers with the most comprehensive product range and the most stable quality in the hydraulic hose field, enjoying a renowned reputation both within and outside the industry.

II.Oilfield Hose Division

Oilfield Hose Division is a core business division of Qingdao Qingflex Hose Factory, focusing on high-end oil and gas engineering fields such as oil and gas extraction, shale gas development, and oil and gas field acid fracturing. It specializes in the research, development, production, and technological upgrading of ultra-high pressure fracturing hoses, acid fracturing hoses, and oil drilling hoses. The division boasts a top-tier R&D and production team, overcoming numerous industry technical challenges such as ultra-high pressure, ultra-abrasion resistance, strong corrosion resistance, and impulse resistance. Products are developed and manufactured in strict accordance with international authoritative standards such as API 7K and API 16C, with pressure resistance up to 15,000 PSI / 20,000 PSI. They possess extremely strong abrasion resistance, acid and alkali resistance, and fatigue resistance, perfectly replacing imported products of the same type and effectively solving the core pain point of high-pressure fluid transmission in the oil and gas field. Our products are widely used in critical scenarios such as fracturing operations, drilling mud transportation, choke and kill operation, and blowout preventer control in onshore and offshore oil and gas fields. With their stable performance and ultra-long service life, they have become a core supplier for major domestic and foreign oil and gas companies and oilfield engineering service providers, helping domestic and foreign energy industry and occupying a leading position in the high-pressure hose field.

 

 

III. Plastic Hose Division

Plastic Hose Division is an important part established by Qingflex to focus specifically on the high-end, lightweight, ultra-high pressure fluid transmission sector. It specializes in ultra-high pressure specialty thermoplastic hoses rated at 300MPa and above, thereby breaking the technological monopoly and filling a critical gap in the domestic market. The division is dedicated to the R&D and manufacturing of ultra-high pressure PTFE, polyurethane, and nylon hoses, as well as corrosion-resistant specialty ultra-high pressure thermoplastic hoses. Leveraging proprietary material formulations and precision molding processes, the division has achieved products capable of withstanding maximum pressures exceeding 300MPa—with certain custom models reaching up to 400MPa. These products possess key attributes such as lightweight construction, a small bending radius, resistance to extreme temperature fluctuations, and strong corrosion resistance. Compared to rubber hoses of equivalent specifications, these products are 40% to 60% lighter and feature a bending radius reduced by over 50%, allowing for easy installation in confined spaces. Their operating temperature range spans from -70°C to +280°C, enabling them to withstand corrosion from aggressive media such as strong acids, strong bases, and organic solvents. Furthermore, their smooth inner tubes prevent impurity precipitation, ensuring pure, residue-free fluid transmission that meets the rigorous demands for ultra-high pressure, high-precision, and high-cleanliness fluid transfer applications. These products are widely utilized in fields such as ultra-high pressure hydraulic systems, high-end construction machinery, precision mechanical equipment, petrochemicals, aerospace support systems, specialty equipment manufacturing, high-pressure water jet cleaning, and hydrogen energy. By virtue of their exceptional ultra-high pressure performance and consistent quality, Qingflex has emerged as a leading enterprise within the ultra-high pressure thermoplastic hose niche market, establishing itself as the preferred supplier for high-end ultra-high pressure fluid transmission scenarios.

 

IV. Floating Hose Division

 Floating Hose Division specializes in the fields of marine engineering, port and vessel operations, and oil and gas transportation. It is dedicated to the professional research, development, and manufacturing of specialized products, including marine floating oil hoses, flexible floating pipelines for offshore engineering, floating intake and discharge hoses for coastal industrial use, and marine rubber transport hoses. Targeting complex marine conditions, the division optimizes product formulations and structural designs, giving its products core advantages such as high buoyancy, strong resistance to seawater corrosion, UV resistance, resistance to wind and wave torsion, and large-diameter flexible transport. Standard pressure ratings are 15 bar, 19 bar, and 21 bar, and ultra-high pressure and large-diameter specifications can be customized according to customer needs. The products are widely utilized in scenarios such as offshore oil transfer, fluid transport for marine engineering, coastal industrial circulating water conveyance, and specialized marine transport operations. Designed to withstand the harsh outdoor conditions characteristic of marine and port environments, they boast a service life significantly exceeding that of comparable products. As a core supplier in the market for floating hoses used in marine engineering, Qingflex plays a pivotal role in supporting the advancement of marine engineering equipment both domestically and internationally.

 

V.Cooling Hose and Coupling Division

Cooling Hose and Coupling Division keeps pace with the rapid global development of the new energy and data center industries. Focused on the core sectors of thermal management fluid transmission and fluid connection, it is an integrated supplier of supporting solutions for liquid cooling systems, integrating professional R&D, precision manufacturing and customized services.

In the hose product segment, the division specializes in the R&D and production of a full range of core products, including liquid cooling hoses for data centers, liquid cooling tubes for new energy vehicles, cooling pipes for energy storage systems, and thermal management hoses for power batteries. Tailored to the harsh working conditions and special operational requirements of diverse liquid cooling scenarios, our dedicated liquid cooling hoses are elaborately engineered with outstanding properties such as low permeability, high insulation, resistance to coolant corrosion, resistance to high and low temperature cycling, long service life and pulse resistance. The products are fully compatible with mainstream thermal management media on the market including pure water and ethylene glycol coolant. Integrated customization of quick connectors is also available. Featuring easy installation, superior sealing performance, stable operation and long service life, they fully meet the operating requirements of various precision thermal management systems.

In the connector component segment, the division professionally develops and manufactures various hydraulic fittings and liquid cooling quick connectors. Equipped with top-tier Japanese precision lathes, we select high-quality raw materials such as stainless steel and carbon steel. Supported by an experienced in-house R&D team, we rigorously control every production process to deliver high-performance, highly stable and reliable fluid connection products for customers. Customized fluid connection solutions can be developed according to customers’ equipment working conditions and installation requirements, enabling precise matching and seamless integration between hoses and fittings.

Boasting a comprehensive and highly adaptable product portfolio, the division’s products are widely applied in large-scale IDC data centers, new energy passenger and commercial vehicles, industrial and commercial energy storage power stations, photovoltaic inverters, industrial temperature control systems, hydraulic control systems and many other fields. With a complete product matrix, reliable product quality and one-stop supporting service capabilities, the division has established itself as a premium supplier in the new energy liquid cooling supporting sector. It continuously empowers the efficient, safe and stable development of the new energy and digital computing industries.

I. Qingflex Equipment Advantages: Intelligent Manufacturing and Precision Testing, Building a Solid Foundation for Quality

Qingflex has invested heavily in world-class production and testing equipment, creating a digital and intelligent production workshop. Each of its five business divisions is equipped with an independent and dedicated production line, achieving fully automated and refined production throughout the entire process. The production line boasts core equipment such as German-style ultra-high pressure steel wire braiding machines, American-style four-deck and six-deck spiral machines, special thermoplastic extruding production lines, low-temperature freezing and setting systems, intelligent vulcanization production lines, and high-precision crimping assembly lines. This ensures high production precision and significantly improved production efficiency, reliably guaranteeing the mass production and consistent quality of high-end products such as ultra-high pressure thermoplastic hoses (above 300MPa) and ultra-high pressure fracturing hoses.

In terms of testing, Qingflex has established a municipal-level enterprise technology center and a professional testing laboratory, equipped with a full set of high-end testing equipment, including Gotech rubber testing equipment, ultra-high pressure burst testing machines, dynamic impulse testing machines, high and low temperature cyclic aging testing machines, corrosion resistance testing machines, and chemical analysis instruments. This has enabled Qingflex to establish a comprehensive quality control system. From raw material inspection upon arrival and real-time monitoring of the production process to 100% pressure testing, impulse life testing, and weathering resistance testing of finished products, all testing standards strictly adhere to top international standards such as API, DIN, SAE, and ISO. Testing data is fully traceable, ensuring that every product meets the requirements for use under extreme operating conditions, with quality comparable to leading international brands.

 

II. Qingflex’s Core Advantages

1. Technological R&D Advantages

Qingflex is a national high-tech enterprise with a professional R&D team focusing on tackling key technologies in the field of fluid transmission hoses. Qingflex has accumulated over seventy invention and utility model patents, led and participated in the formulation of multiple industry standards, and successfully overcome several core technical challenges in the industry, including ultra-high pressure bearing, special material formulation, and adaptation to extreme working conditions. In particular, it has achieved technological leadership in the fields of ultra-high pressure thermoplastic hoses above 300MPa and ultra-high pressure fracturing hoses, promoting the domestic substitution of high-end hose products.

2. Advantages of the entire industry chain

Qingflex has built a complete industrial chain production system from raw material research and development, mixing, extruding, building, testing to finished product delivery. It independently controls the core material formulas and production processes, without relying on external supply chains. This ensures product quality stability and effectively controls production costs. Qingflex can undertake large-volume and highly customized orders to meet the diversified delivery needs of global customers.

3. Advantages of Quality Certification

Qingflex has passed a number of authoritative international and domestic certifications, including ISO 9001 quality management system certification, ISO 24001 environmental management system certification, ISO 45001 established occupational health and safety management system certification, API Q1/7K/16C certification, and CCS, ABS, DNV certification. Its products have undergone rigorous working condition testing, and their core indicators such as service life, pressure resistance, and corrosion resistance are superior to industry standards. In the fields of ultra-high pressure and special fluid transmission products, Qingflex has gained unanimous recognition from domestic and foreign customers through extensive verification under actual working conditions, setting a quality benchmark for Chinese high-end hoses.

4. Service Network Advantages

Qingflex has established a global service network with multiple branches both domestically and internationally, providing a one-stop, end-to-end service from initial product selection and solution design to mid-term production follow-up and logistics distribution, and final installation guidance and after-sales maintenance. A professional technical team provides full support, responding quickly to customer needs and resolving various issues encountered during product use, ensuring worry-free product operation.

 

III. Industry Status

Qingdao Qingflex Hose Factory, with its deep expertise and innovation in the field of fluid transmission hoses, has firmly established itself as a leading enterprise in the high-end fluid transmission hose industry. It is a benchmark enterprise for ultra-high pressure fracturing hoses and a core supplier of ultra-high pressure thermoplastic hoses above 300MPa. Simultaneously, it holds significant market share in the niche markets of hydraulic hoses, floating marine hoses, and new energy liquid cooling hoses. Qingflex has successively won numerous honors, including National High-tech Enterprise, Qingdao Municipal Enterprise Technology Center, Contract-Abiding and Creditworthy Enterprise, and Specialized and Innovative Enterprise. Its products are supplied to renowned domestic and international enterprises, including SANY, XCMG, and Sinopec, and are exported to more than 70 countries and regions in Europe, America, the Middle East, Southeast Asia, and Australia. It has become a highly competitive Chinese brand in the global fluid transmission field and is committed to becoming a world-class fluid transmission hose manufacturer.