
DL Sc 510 Semi-Synthetic Cutting Fluid
A stable emulsion system for general metal cutting, balancing lubrication and cooling with excellent value.
From cutting fluids and hydraulic/guide oils to forming, rust-preventive and heat-treatment media — 67+ grades, tailored to your conditions.

A stable emulsion system for general metal cutting, balancing lubrication and cooling with excellent value.

Designed for hard-to-machine stainless steel, with outstanding extreme-pressure lubrication and rust protection.

Built for carbide (tungsten steel) grinding with good settling behavior, ensuring fine surface finish.

Eco-friendly fully synthetic formulation — low foam, long sump life, ideal for central systems.

For general hydraulic and circulation systems, blended from refined mineral base oils and selected additives.

Semi-synthetic base oil with high-performance additives for low-temperature anti-wear duty; excellent viscosity-temperature and demulsibility.

One oil for hydraulics and slideways — excellent anti-stick-slip performance for combined systems.

Tailored for CNC machine slideways: good tackiness and anti stick-slip behavior to protect precision rails.

For heavily loaded gearboxes: superb extreme-pressure anti-wear performance and thermal stability.

Synthetic base oil for wide temperature range — ideal for high heat, heavy loads and extended drains.

For low-speed, high-load sliding contact of worm gear sets — excellent oiliness and transmission efficiency.

Good lubricity, cooling and thermal stability, blended from refined base oils and multiple additives.

High film strength and EP performance to prevent galling and die wear in stainless steel drawing.

For high-speed aluminum foil stamping — volatile, low residue, keeps foil surfaces bright and clean.

For aluminum-alloy die casting of electronics: clean release, no carbon build-up, protects dies and castings.

High-efficiency lubricant for aluminum stamping — fewer cracks, higher yield.

Long-term preservation with an even, dense oil film — ideal for storage and marine shipment of metal goods.

Economical water-based inter-process rust protection for machined parts.

Ideal cooling curve and brightness — minimal distortion, uniform hardness for precision heat treatment.

Mineral heat-transfer oil with strong thermal stability and low coking tendency for indirect heating systems.

Tailored for screw compressors: excellent oxidation resistance and oil-water separation for long runs.

Synthetic formulation with low carbon deposit at high temperature and extended drain intervals.

Low evaporation and odor, with excellent insulation and cooling for stable, efficient spark erosion.

Designed for metal sawing: less blade wear and clogging, cleaner cuts, higher efficiency.
Founded in December 2014, Guangzhou Dourland Medium Technology Co., Ltd. is a technology-driven enterprise integrating R&D, production, sales and service of metalworking fluids and lubricants. We were certified as a Guangzhou high-tech enterprise in 2018, and passed GB/T19001-2016 / ISO 9001 quality and GB/T24001-2016 / ISO 14001 environmental management system certifications in 2020.
We operate an advanced R&D laboratory with modern production and testing equipment. Our team is seasoned, and we have engaged two professor-level senior engineers holding State Council allowances as advisors — enabling fast response to challenges raised by customers' new processes and materials.


Guided by our motto — Sincere, Pragmatic, Quality, Efficient — we are the reliable media partner behind metalworking enterprises.
Two professor-level senior engineers holding State Council allowances serve as advisors; our R&D and service teams bring deep industry experience.
Air release value tester, demulsibility tester, foam characteristics tester, micro-water tester, distillation/flash/pour point testers, low-temperature chamber and more.
Certified to ISO 9001 quality and ISO 14001 environmental management systems; selected member of the Brand Power Program for cutting fluids.
Rapid reaction to issues from new processes and materials, delivering the right product and selection proposal while continuously developing new products.
National High-Tech Enterprise · Specialized & Sophisticated SME · Innovative SME · Science & Technology SME




Our products have been serving BYD, Chen Hsong, Midea, AUX, Changhong and other leading companies.










Recognized by the Guangdong Department of Industry and Information Technology, validating our specialized and refined capabilities.
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With sustained R&D and technical innovation, Dourland was listed as a Guangdong Innovative SME with a three-year validity.
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After qualification reviews and public-opinion monitoring, Dourland became a preferred member unit of the Brand Power Program in the cutting-fluid industry.
Read MoreWelcome to inquire about product selection, technical support and cooperation — our engineers will get back to you shortly.
We are always looking for R&D, sales and service talents passionate about the metalworking industry. Send your resume to: 13802527886@163.com
Advancing toward a modern enterprise, moving forward with time