Providing heavy-duty, high-temperature, and wear-resistant lubricating fluids engineered for extreme mechanical conditions. Select a product line to review test documentation and viscosity specifications.
Understanding thermal oxidative stability, viscosity indexes, and molecular shear resilience in heavy-duty machinery systems.
In modern industrial air compression systems, the lubricating medium serves as both a sealing agent and a cooling mechanism. Operating temperatures inside rotary screw and reciprocating piston compressors regularly exceed 100°C, with localized hot spots hitting extreme levels. High-performance compressor engine oil must maintain a high Viscosity Index (VI) to prevent the breakdown of the hydrodynamic oil film. If the film ruptures, direct metal-to-metal contact causes rapid abrasive wear on the rotor profiles and cylinder walls, leading to catastrophic equipment failure.
Furthermore, under severe mechanical shear forces, standard low-grade lubricants undergo molecular degradation. Our premium formulations use shear-stable polymer viscosity index improvers combined with highly refined Group II and Group III base oils. This chemical architecture resists molecular tearing, ensuring consistent viscosity control and sustained power efficiency over extended drain intervals up to 8,000 operational hours.
Air compressors are highly susceptible to the formation of carbonaceous varnish and lacquer-like deposits. When oxidation occurs, standard lubricant molecules combine with heat and atmospheric oxygen to form volatile acidic compounds. These compounds condense on the cooler discharge valves and downstream piping, forming thick, sticky residues. Over time, these deposits harden into carbon build-ups, which restrict airflow, increase internal operating pressures, and significantly escalate energy consumption.
To address this critical operating issue, Shandong Longhai's engineering team has designed specialized antioxidant additives. These synthetic oil chemistries actively suppress thermal polymerization, preventing the precursors of varnish from forming. The result is a clean discharge chamber, minimal valve carbonization, and a substantial reduction in fire hazards caused by compressed air sparks interacting with built-up oily carbon crusts.
An industry-leading lubricant manufacturer combining 15+ years of chemical development with global standard compliance.
Shandong Longhai Lubrication Technology Development Co., Ltd. was established in 2009 and is headquartered in Zibo, Shandong—the chemical manufacturing heartland of Northern China. Over the past 15 years, the company has grown into a prestigious high-tech enterprise that integrates research, advanced chemical synthesis, large-scale production, and global commercial sales.
We own the well-known national brand "Century Longhai" alongside our international strategic cooperation brand, the British "A Ba" series. Our comprehensive product catalog covers diesel engine oils, gasoline engine oils, gear oils, hydraulic transmission fluids, anti-wear hydraulic fluids, specialized engineering machinery lubricants, natural gas engine oils, fully synthetic lubricants, automotive urea solutions, eco-friendly antifreeze, motorcycle oils, and heavy-duty industrial lubricants. Every formulation is insured by the People's Insurance Company of China (PICC), guaranteeing financial security and product liability support for all global partners.
A visual insight into our state-of-the-art laboratory testing equipment and smart production lines.
Why major global industrial distributors partner with Shandong Longhai for cost optimization, supply security, and chemical innovation.
Shandong Longhai's headquarters in Zibo, Shandong, provides direct access to one of the world's most concentrated refining and chemical engineering networks. This proximity allows us to source premium base oils (including advanced Group II, III, and synthetic PAO bases) directly from upstream domestic and multinational refiners. By eliminating transport delays and long-distance middle-man costs, we secure a stable raw material pipeline. This structural logistical advantage directly translates to cost savings for our global wholesale partners.
Our production facilities utilize modern metrological technologies, ensuring extreme chemical stability across production runs. Shandong Longhai has integrated fully automatic volumetric filling lines. These advanced systems operate on high-precision metering principles, securing a filling accuracy of 1‰ to 2‰. While maintaining this precision, the automated infrastructure increases packaging and filling speeds by 20% to 35%. This high-capacity throughput guarantees short lead times even for massive volume orders.
Innovation dictates the future of lubricant engineering. Longhai commits over 5% of its gross annual revenue to product research and development. We maintain active research partnerships with leading domestic chemical engineering universities. Our laboratory is equipped with state-of-the-art testing suites, including gas chromatographs, atomic emission spectrometers, and automatic viscometers, allowing us to perform detailed oil analysis and design tailored formulations matching strict customer specifications.
Ensuring continuous run-time, minimizing wear, and driving down operational expenditures across diverse industrial ecosystems.
Compressors deployed in mining and earthmoving sectors face harsh environments filled with airborne dust, grit, and significant temperature swings. If the compressor oil does not provide immediate air-release and anti-foam performance, air bubbles get trapped inside the oil lines. This causes cavitation, resulting in local metal erosion and sudden bearing collapse.
Longhai's compressor engine oils are formulated with specialized silicone-free defoaming additives. This ensures that entrained air is separated rapidly, preventing cavitation under high pressures and protecting heavy equipment running continuously in remote and hostile environments.
Refrigeration compressors demand specialized oils that can withstand chemical contact with modern hydrofluorocarbon (HFC) and natural refrigerants while operating at low temperatures without waxing. Standard mineral oils lose fluid mobility under these conditions, causing the oil to solidify inside the evaporator pipes, which lowers heat transfer efficiency.
Our professional-grade refrigeration oil line features excellent low-temperature fluidity, a low pour point, and superior solubility with modern refrigerants. This keeps the internal tubes clean, prevents valve sticking, and maximizes thermal efficiency in commercial cold storage facilities.
Automotive assembly plants, electronics manufacturing facilities, and food processing lines rely on pure, moisture-free compressed air. Water droplets condensed inside air lines can mix with the compressor oil, forming a thick emulsion. This emulsion ruins sealing gaskets and leads to expensive production downtime.
Longhai's advanced formulation features high demulsibility. The oil sheds water rapidly, allowing condensed moisture to be easily drained from the compressor reservoir. This keeps the oil clean, protects sensitive pneumatic tools, and keeps production lines running smoothly.
Offshore oil rigs and marine transport vessels operate under high relative humidity, constant salt-mist exposure, and variable loads. Corrosion protection is critical for these applications. Acidic compounds from combustion or humidity can quickly degrade compressor surfaces.
We incorporate advanced rust and corrosion inhibitors into our formulas. These additives form a chemical barrier on all internal metal components. This protective layer repels moisture and neutralizes acids, ensuring long-term rust protection even during extended equipment downtime.
From customized chemical synthesis to complete branding and logistics support, we provide full-service lubrication solutions.
We design custom fully synthetic and semi-synthetic lubricant formulations tailored to your vehicle or machinery specifications, operating environment, and target market positioning. Our engineers adjust viscosity levels, anti-wear properties, and additive packages to meet international standards such as API, ACEA, and DIN.
Longhai supports a wide range of batch sizes, from small-scale trial runs to high-volume commercial production. Our manufacturing lines handle engine oils, gear fluids, transmission fluids, and industrial lubricants. We offer flexible packaging sizes, ranging from 1-liter bottles for retail to 200-liter drums and IBC totes for industrial applications.
Shandong Longhai maintains strict quality control systems. Our operations are certified under ISO 9001, ISO 14001, and ISO 45001. We provide detailed third-party laboratory testing reports for every batch, verifying kinematic viscosity, flash points, pour points, and water separation properties to ensure complete international compliance.
We provide complete design and branding support to help build your brand identity. Our creative team handles bottle designs, label layouts, and shipping carton designs. We also provide technical data sheets (TDS) and safety data sheets (SDS) to ensure a professional product presentation in your target markets.
A structured approach designed to ensure quality, performance, and efficiency from initial consultation to final delivery.
1. Demand Analysis
Understanding viscosity, base oil, and machinery requirements.
2. Formula Design
Developing custom additive packages and base oil ratios.
3. Sample Testing
Verifying chemical properties in our high-precision laboratories.
4. Production & Packing
Scaling production using high-speed volumetric filling lines.
5. After-Sales Support
Providing oil analysis reports and regular quality audits.
Our most requested industrial and automotive lubricants, preferred by procurement managers worldwide for quality consistency and field performance.
API SP Grade Protection
Advanced Synthetic Lubrication
High Stability Gasoline Protection
Reliable Operational Stability
Heavy Duty Diesel Protection
Extended Service Life Formula
High Thermal Stability
Heavy Load Wear Protection
Certified operations meeting ISO international standards. Quality approved for Mercedes-Benz and insured by PICC.
An inside look at our facilities, showing the manufacturing floor and precision testing areas that support our production quality.
Staying ahead of changes in industrial lubrication, driven by carbon neutrality targets, energy efficiency standards, and shifting base oil markets.
The industrial market is moving away from traditional Group I mineral oils toward high-purity Group III, PAO (Polyalphaolefin), and synthetic ester base oils. Modern, high-output rotary screw compressors operate at higher temperatures and pressures, which can cause mineral oils to break down quickly. Synthetics provide improved thermal stability and oxidation resistance, extending typical oil drain intervals from 2,000 hours to over 8,000 hours. This shift helps reduce waste oil disposal volumes and lowers overall maintenance costs.
Energy costs make up a significant portion of a compressor's lifetime operating expense. High-performance lubricants help reduce these costs by lowering internal friction. Premium synthetic formulations maintain a stable lubricating film at high temperatures while reducing fluid drag under cold-start conditions. Field tests show that switching to optimized synthetic formulations can improve overall compressor efficiency by 1.5% to 4.0% compared to standard mineral-based oils.
Environmental regulations are driving the development of biodegradable lubricants for sensitive operations like marine construction, mining, agriculture, and forestry. In these sectors, accidental oil leaks can cause soil and water contamination. The industry is responding by developing synthetic ester formulations that offer rapid biodegradability and low toxicity, without sacrificing the high-temperature and anti-wear protection expected of heavy-duty industrial oils.
Answers to common technical and procurement questions, compiled by our chemical engineering and quality assurance teams.
Mineral compressor oils are derived from refined crude petroleum and are typically classified under Group I or Group II base oils. While cost-effective for light-duty, intermittent operations, they have lower oxidation stability and are prone to varnish deposits at operating temperatures above 85°C. Synthetic compressor oils, utilizing Group III, PAO (Polyalphaolefin), or Ester bases, possess a highly uniform molecular structure. This results in an exceptionally high Viscosity Index, lower volatility, superior thermal oxidative resistance, and fluid stability. Synthetics can operate reliably at temperatures up to 110°C, and their service life often extends to 8,000 hours, whereas mineral oils typically require replacement after 2,000 to 3,000 hours.
As ambient air is drawn into a compressor, humidity condenses into liquid water inside the system. If the compressor oil has poor demulsibility, it will mix with the water to form a sticky emulsion. This emulsion degrades the oil's load-carrying capacity, accelerates oxidation, blocks filters, and can lead to corrosive wear on internal bearings. High demulsibility means the oil resists emulsification and separates from water quickly. This allows operators to easily drain water from the bottom of the oil reservoir, keeping the lubricant clean, maintaining a stable fluid film, and protecting components from rust and premature wear.
Viscosity selection depends on the compressor type, operating pressures, and ambient environment. Rotary screw compressors typically require lower viscosity oils, such as ISO VG 32 or ISO VG 46, to ensure rapid heat transfer, good cooling performance, and fast circulation through tight rotor clearances. Reciprocating piston compressors, which experience higher mechanical loads, generally require heavier oils like ISO VG 68 or ISO VG 100 to maintain a robust seal on cylinder walls. You should always consult the original equipment manufacturer (OEM) manuals to match the required ISO VG viscosity grade with your specific operating temperature range.
We ensure batch-to-batch consistency through our fully automated blending and filling infrastructure. Our plant utilizes PLC-controlled weight-batching and inline blending systems, which monitor raw materials to an accuracy of 1‰ to 2‰. Additionally, our quality control laboratory conducts testing on every production batch. We verify physical and chemical properties, including kinematic viscosity at 40°C and 100°C, flash point, water content, and foaming tendencies, before release. This thorough testing process ensures all products meet international ISO and IATF standards.
We offer a wide selection of packaging options to meet different market demands. For retail brands, we provide small containers ranging from 1-liter to 5-liter HDPE bottles. For commercial and heavy industrial clients, we supply 18-liter pails, 200-liter steel drums, and 1,000-liter IBC containers. Our packaging services include custom container designs, silk-screen label printing, multi-language technical documentation, and safety data sheet (SDS) compliance to support clean product launches in international markets.
Browse our additional formulations covering diesel engines, marine power units, hydraulic transmissions, and specialty industrial gear systems.
"Products are character, quality is life." We work closely with partners worldwide to deliver reliable lubrication solutions.
Our engineering team is available to assist with formulation customization, product selection, or technical specifications. Contact us to learn more about our wholesale pricing, laboratory testing reports, and OEM/ODM capacities.
Longhai
