Explore our elite selection of wholesale industrial lubricants engineered for extreme pressures, anti-wear protection, and operational longevity.
Tribology Pioneers Since 2009
Established in 2009 and headquartered in the highly industrialized city of Zibo, Shandong Province, Shandong Longhai Lubrication Technology Development Co., Ltd. is a state-level high-tech enterprise integrating pioneering R&D, precision manufacturing, and global marketing operations. Spanning over 15 years of industry excellence, we have established a complete lubricant production value chain, positioning ourselves as a leading name for high-grade ISO hydraulic fluids and industrial lubricants globally.
Our footprint features our proprietary brand "Century Longhai" alongside the internationally coordinated premium brand "A Ba" series. Our comprehensive catalog ranges from anti-wear hydraulic oils and transmission fluids to special engineering machinery lubricants, eco-friendly synthetics, antifreeze, and diesel/gasoline engine oils. Crucially, all our core formulations are backed by quality product liability insurance through the PICC (People's Insurance Company of China), assuring ultimate peace of mind for heavy industries.
Insights into the global shifts in viscosity standards, base oil upgrades, and chemical formulation improvements.
ISO VG classifications determine the kinematic viscosity of oil in centistokes (cSt) at 40°C. In modern heavy industries, selecting the precise viscosity grade represents the baseline of energy efficiency and component preservation. The global shift toward operating machines under severe high-pressure conditions (upwards of 350 bar) demands uncompromising viscosity stability.
Traditional anti-wear hydraulic oils utilize Zinc Dialkyldithiophosphate (ZDDP) as an active boundary lubricant. ZDDP forms a protective tribofilm on metal surfaces under high localized pressure and heat, preventing metal-to-metal contact. However, environmental regulations and the rise of multi-metal hydraulic pumps have accelerated the adoption of ashless anti-wear technologies.
Ashless (zinc-free) hydraulic oils are formulated with sulfur-phosphorus organic compounds. These advanced chemical solutions deliver distinct advantages: they eliminate heavy metal contaminants, prevent filter plugging in water-contaminated conditions, and remain fully compatible with silver-plated components commonly found in high-performance piston pumps.
For multinational procurement managers, procuring hydraulic fluids involves navigating logistics bottlenecks, fluctuating base oil indexes, and complex regulatory landscapes. Choosing a robust supplier in China like Shandong Longhai guarantees price competitiveness, chemical quality compliance, and rapid turnaround times.
We source high-grade Group II and Group III base oils directly from primary refineries, ensuring chemical stability and resistance to oxidation.
Our automatic volumetric metering lines operate within a 1‰-2‰ margin of accuracy, accelerating delivery by 20% to 35%.
Collaborations with global leaders allow us to custom-blend additives for shear stability, demulsibility, and air release.
Different industrial fields require unique properties from their hydraulic mediums. Below is a macro-level guide outlining how Shandong Longhai tailors hydraulic fluids to critical global industries:
Our fluids feature high shear stability index (SSI) and elevated flash points. Designed for heavy hydraulic excavators and high-temperature furnace controls where thermal stresses degrade low-grade lubricants.
Equipped with superior demulsibility, our hydraulic oils quickly separate water in moisture-rich environments, preventing the formation of corrosive emulsions and pump cavitation.
Engineered for high filtration precision down to 3 microns. Keeps delicate electro-hydraulic proportional valves clean, eliminating varnishing and varnish buildup.
Meeting global standards through robust quality systems and state-of-the-art laboratory testing.
To provide reliable lubrication products, Shandong Longhai has established a rigorous quality framework certified to international standards:
We operate flexible production setups to meet diverse market demands:
Fine-tuning fluid performance for viscosity index, shear stability, and additives to match local temperatures.
From 1L cans to 200L drums and IBC totes, supporting all global freight specifications.
State-of-the-art testing equipment analyzes flash points, water separation, copper strip corrosion, and viscosity indices.
Creating fully compliant label layouts detailing specifications, GHS classifications, and hazard statements.
A structured workflow designed for seamless custom blending, rigorous testing, and reliable delivery.
Demand Analysis
Formula Design
Sample Testing
Mass Production
After-Sales Support
Take a closer look at our Zibo manufacturing plant, custom analytical laboratory, and high-efficiency raw material storage.
Engineering long-term value through eco-friendly lubricants, nanotechnology, and advanced synthetic formulations.
Global regulatory bodies are shifting toward environmentally acceptable lubricants (EALs) for marine, forestry, and agricultural hydraulic systems. Shandong Longhai's engineering team is developing biodegradable synthetic ester-based hydraulic fluids. These formulations provide natural high viscosity indices and high flash points while ensuring minimal impact on soil and aquatic life in the event of lines leaks or operational spillage.
Synthetic esters offer superior thermal stability, significantly extending drain intervals. Their high film strength protects pumps at elevated temperatures, leading to measurable energy savings and reduced overall maintenance costs.
Traditional chemical compounds face structural limitations in high-load, boundary lubrication regimes. Shandong Longhai is actively researching nanoparticle dispersions—such as nanocopper and graphene—as mechanical anti-wear additives. These particles fill microscopic surface rough spots on friction pairs, converting sliding friction into rolling micro-friction. This lowers friction coefficients, prevents localized wear, and extends pump life.
Integrating these nanomaterials with standard ashless anti-wear systems allows us to supply industrial lubricants designed to withstand high pressures, challenging the limits of traditional formulations.
Frequently asked questions answered by our application engineers and global supply team.
Explore our advanced formulations designed for commercial transportation, gear protection, and extreme mechanical workloads.
Longhai
