PICC Insured Performance Proven Under Demanding Industrial and Automotive Conditions
The Evolution of High-Pressure Fluid Power Mechanics and Thermal Stress Mitigations
In modern industrial and heavy engineering architectures, hydrostatic systems operate under conditions far exceeding traditional design thresholds. Modern high-speed, variable-displacement piston pumps and high-torque motors mandate lubricants that can serve simultaneously as power transmission media, heat transfer fluids, dynamic sealants, and boundary-lubrication barriers. Viscosity stability is paramount; a minimal shear degradation rate directly correlates with system power losses and heightened component friction.
Shandong Longhai Lubrication Technology addresses this demanding operational paradigm by engineering hydrostatic gear and transmission fluids configured with robust shear-stable polymer viscosity modifiers. In contrast to lower-grade alternatives, our formulations utilize high-viscosity index (HVI) base oils that retain structural integrity at peak running temperatures while ensuring rapid pumpability in arctic starting environments.
Within hydrostatic transmissions, micro-pitting, scuffing, and fatigue-induced spalling represent constant system failures due to high contact pressures. Our formulation engineers incorporate optimized levels of zinc dialkyldithiophosphate (ZDDP) coupled with advanced sulfur-phosphorus extreme pressure (EP) chemistry. This synergetic design constructs a low-shear, sacrificial protective tribo-film at micro-asperity points. This prevents metal-to-metal contact and prolongs pump gear life under continuous operational pressures.
Across the EU, North America, and rapidly growing infrastructure zones in the Asia-Pacific, industrial regulations now demand longer oil drain intervals (ODI) and minimal eco-impact. The transition to higher-tier base stocks (Group II hydro-cracked and Group III synthetic esters) has altered the wholesale sourcing dynamic. Wholesalers and factory fleet procurement officers need suppliers capable of supplying massive, globally compliant volumes with consistent quality certifications.
As a leading Chinese manufacturing hub based in Zibo, Shandong, our factory addresses this international supply gap. Operating a state-of-the-art 131-acre manufacturing center, we deliver fully compliant, high-spec lubricants to over 139 cities domestically and to major international regions. Our logistics operations ensure containerized cargo is blended, packaged, and verified under strict ISO-9001 and ISO-14001 guidelines, maintaining supply-chain continuity for global OEM distributors.
Rapid circulation of fluid in high-volume hydrostatic systems induces severe cavitation hazards. Entrained air weakens fluid compressibility, reducing system response times and accelerating pump wear through micro-dieseling. Century Longhai's advanced line of hydrostatic lubricants integrates sophisticated silicone-free polymeric air-release agents that guarantee rapid bubble coalescence. This maintains consistent volumetric efficiency across wide system pressure loops.
Established in 2009 in the industrial center of Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. has developed into a leading high-tech manufacturer of automotive and industrial lubricants. With more than 15 years of industry experience, we offer comprehensive R&D, advanced blending processes, and global wholesale supply.
Our portfolio features our domestic brand "Century Longhai" and the British Strategic partner brand "A Ba". Our operations span heavy-duty diesel oils, premium synthetic motor oils, industrial gear oils, anti-wear hydraulic fluids, automotive urea, and hydrostatic transmission fluids. The quality and performance of all Longhai brand products are guaranteed by the PICC (People's Insurance Company of China), providing reliable risk mitigation for our global industrial partners.
Industry Excellence
Production Base Area
Annual Blending Capacity
Precision Engineering, Modern Blending Lines, and Rigorous Laboratories
Our manufacturing plant uses modern, fully automated metering filling lines. By replacing traditional weight-based filling with advanced pressure-metered filling, we maintain high accuracy down to 1‰ to 2‰.
This system increases standard filling throughput speeds by 20% to 35%, ensuring rapid delivery and consistent product quality for large bulk shipments.
All batches undergo testing in our precision labs. Our quality system is certified under ISO 9001-2015, ISO 14001, and ISO 18001, and our formulations carry global OEM approvals, including German Mercedes-Benz certifications.
Custom Formulations Designed for Global Environments and Heavy Operating Settings
Protects combined harvesters and heavy tractors under dusty, continuous load conditions. High anti-foam and thermal oxidation resistance keep hydraulic valves clear and prevent component wear.
Formulated with high EP (Extreme Pressure) additives to withstand extreme shock loads and prevent metal-to-metal contact in heavy mining and earth-moving machinery.
Engineered for industrial CNC systems and robotics. Designed for shear stability and high filterability, protecting sensitive components and maintaining exact fluid response times.
Engineered with a low pour point and high viscosity index, ensuring quick start-up performance and cold-flow properties in sub-zero and arctic operating environments.
Custom Formulations and High-Speed Blending Infrastructure for Global Brands
We formulate synthetic, semi-synthetic, and mineral oils customized to specific climatic conditions, target equipment profiles, and regional regulations. Our formulations meet international standards including API, ACEA, and relevant OEM specifications.
Learn moreWe support production runs from small trial batches to massive bulk supplies. Our filling lines support multiple container shapes, sizes, and drum volumes, providing flexibility for retail and industrial packaging needs.
Learn moreCertified under ISO 9001, ISO 14001, and ISO 18001. We provide detailed third-party test reports, certificate analysis sheets, and batch tracing to ensure full compliance and consistent quality.
Learn moreWe provide full label design, packaging customization, material safety documentation (MSDS), and technical training support to help you establish a strong brand presence in your market.
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1. Demand Analysis
2. Formula Design
3. Sample Testing
4. Bulk Production
5. After-Sales Care
Pioneering the Next Generation of Eco-Friendly, Ultra-Low Shear Industrial Fluids
We are developing high-performance, biodegradable synthetic ester formulations. These oils provide excellent lubrication properties while meeting strict environmental regulations for forestry and offshore projects.
Using nanotech additive materials to create low-friction boundary films. This technology reduces micro-wear and surface fatigue under high friction pressures.
Designing specialized fluid markers that work with online sensors. This allows operators to monitor fluid health, depletion levels, and mechanical condition in real time.
Where Strict Quality Controls Guarantee Reliable Industrial Solutions
ISO Compliant, OEM Approved and Insured by PICC
ISO 9001 Quality System
ISO 14001 Environmental
ISO 18001 Health Safety
PICC Insurance Verified
Technical Information and Guidance for Professional Fluid Sourcing Managers
Hydrostatic systems rely on fluid pressure to transmit power, requiring the fluid to maintain consistent compressibility, anti-foam, and air-release properties under high pressures. Standard gear oils focus primarily on boundary lubrication and extreme pressure protection for mechanical gears. Hydrostatic fluids combine these gear-protection qualities with the clean hydraulic response times needed for high-pressure control valves.
Under high-speed, high-pressure conditions, the polymer molecules used to improve viscosity index can break down, causing the fluid to thin. High shear stability prevents this degradation. This ensures the fluid maintains its protective film at high operating temperatures, reducing pump wear and maintaining system volumetric efficiency.
Our products are manufactured under ISO 9001:2015, ISO 14001, and ISO 18001 standards. Our formulations meet major international requirements including API, ACEA, and specific OEM specifications, such as German Mercedes-Benz automatic transmission fluid approvals.
Yes, our R&D center provides customized formulations based on specific operating requirements. We adjust base stock composition and additive packages to optimize fluids for extreme temperature ranges, high-load wear resistance, or eco-friendly biodegradable applications.
Lead times depend on order volume and packaging specifications. Typically, customized blending runs are completed within 15–20 days. We offer flexible packaging options ranging from 1L and 4L bottles to 200L steel drums and IBC totes.
Precision Engineered Fluid Solutions for Reliable System Operation
Longhai
