In the field of industrial production and metal processing, rust has always been an "invisible killer" that affects the quality and service life of products. Whether it is precision parts, large structural parts, or long-term reserve metal work in progress, once the anti-rust treatment is not in place, the surface rust spots will affect the appearance, and the material performance will deteriorate, the equipment will be scrapped, causing incalculable economic losses. Because of this, choosing a truly efficient, stable and adaptable anti-rust product has become the focus of many manufacturing enterprises. Hank BS-400 series is such a systematic product matrix born to solve complex anti-rust problems. It is known as the "new benchmark for metal rust prevention" with its excellent protective performance, subdivided model design and rigorous process standards.
The Hank BS-400 series is not a single product, but a complete family covering a variety of anti-rust scenarios. The series finely divides the product line into four main models according to different metal materials, different anti-rust cycles, and different follow-up processing requirements: BS-401 thin-layer anti-rust oil, BS-402 soft film anti-rust oil, BS-403 water-based anti-rust agent, and BS-404 ultra-long-term anti-rust oil. Each model has undergone strict laboratory testing and field application verification, which not only retains the unified high-quality genes of the family, but also has its own emphasis, truly achieving "one family, all scenes".
BS-401 thin layer anti-rust oil is the star basic model in the Hank BS-400 series. It uses highly refined mineral oil as the base oil, compounded with a variety of high-efficiency anti-rust additives and film-forming agents, and has extremely low oil film thickness and excellent permeability. Unlike ordinary anti-rust oil, the protective film formed by BS-401 on the metal surface is extremely thin and transparent, which hardly changes the original dimensional accuracy and appearance color of the workpiece. It is especially suitable for precision bearings, gears, knives and parts that require subsequent assembly or inspection. User feedback shows that the oil film of BS-401 is not only thin, but also adheres evenly, does not flow and accumulate easily, and can effectively cover the tiny pores on the metal surface, thereby blocking the intrusion of moisture, oxygen and corrosive media. In the salt spray test, BS-401 exhibited corrosion resistance far exceeding that of similar products, providing medium-term anti-rust protection for materials such as carbon steel and cast iron for up to 6 to 12 months, and subsequent degreasing cleaning was very easy, greatly reducing the cleaning cost between processes.
If BS-401 is a lean inner layer guardian, then BS-402 soft film anti-rust oil is a heavy-duty guardian that focuses more on outdoor and harsh working conditions. BS-402 is also an oil-based anti-rust product, but its film-forming characteristics are significantly different. It can form a soft greasy film with a certain thickness and toughness on the metal surface. This film is soft and not brittle, capable of buffering minor bumps during handling, and can effectively resist the effects of high humidity, salt spray, and temperature difference. The soft film of BS-402 has strong self-healing ability. Even if it is partially scratched by bumps, the surrounding anti-rust film will slowly flow and heal, and continue to maintain complete protection. Therefore, BS-402 is particularly suitable for large castings, pipe fittings, exposed parts of mechanical equipment and workpieces that need to be stored in outdoor simple sheds. In practical applications, the anti-rust cycle of BS-402 can reach more than 12 months, and the soft film can be easily removed by solvent cleaning or alkali washing before subsequent use, without adding additional operating burden to end point customers.
Different from the above two oily products, BS-403 water-based anti-rust agent has opened up a new path of environmental protection for the Hank BS-400 series. The water-based anti-rust agent is based on deionized water as a carrier and does not contain any mineral oil components. It is completely flash-free, non-flammable and non-explosive. It is very suitable for workshops and warehouses with extremely high fire safety requirements. BS-403 adopts an advanced water-soluble organic and inorganic compound anti-rust system, which chemically adsorbs on the metal surface to form a dense molecular-level passivation film, thus effectively inhibiting the anodic reaction and achieving the purpose of anti-rust. Its greatest advantage is that the surface of the workpiece after use is clean and oil-free, which does not affect the subsequent welding, painting or bonding process. It is especially suitable as an anti-rust treatment agent For example, in machining, parts treated with cutting fluid need short-term rust prevention. After soaking or spraying BS-403 directly, it can be dried naturally without cleaning and will not interfere with the next processing step. BS-403 has excellent short-term rust prevention effect on cast iron and carbon steel. It can be kept for 1 to 3 months in indoor environment. If it is matched with sealed packaging, the rust prevention period can be further extended. At the same time, it does not contain nitrite and heavy metals, and the waste water treatment cost is low. It is a model of green manufacturing concept in the field of rust prevention.
BS-404 ultra-long-term anti-rust oil is the flagship product with the highest protection level in the Hank BS-400 series. It is designed for precious metal parts that require long-term storage or ocean transportation, such as export machinery, large gearboxes, precision molds, military parts, etc. BS-404 uses multi-layer composite film forming technology. The oil film is thick, transparent or light amber, and has strong adhesion to metal substrates. It can withstand high concentrations of salt spray, acid-base atmosphere and severe temperature alternation. Laboratory data show that the corrosion resistance time of BS-404 in a standard salt spray tank is more than twice the average level of congeneric products. In a dry indoor environment, its anti-rust protection period can reach more than 3 years, and it can also provide stable and effective protection for up to 18 months under outdoor covered conditions. To ensure easy unsealing after long-term storage, BS-404 is designed with a special balance of film strength and oil solubility. Users can use kerosene or professional cleaning agents to quickly remove the oil film without leaving any corrosive residue or stubborn residue on the metal surface.
In addition to the above four main models, the Hank BS-400 series also provides matching pretreatment agents and diluents to help users flexibly adjust the viscosity and construction method according to the actual working conditions. Whether it is soaking, brushing, spraying or rotary coating, the BS-400 series can maintain good uniformity and ductility. At the same time, all products in this series have passed the strict batch inspection under the ISO 9001 quality management system, and comply with environmental regulations such as RoHS and REACH. While providing long-term anti-rust, it can reduce adverse effects on human health and the environment.
In the feedback from many industry users, the Hank BS-400 series has been highly praised. An auto parts manufacturer once worked in progress due to rust problems during the rainy season, resulting in a large number of precision shaft bushings being reworked. After introducing BS-401 thin layer anti-rust oil as the anti-rust solution between processes, the rust rate dropped from more than 5% to less than 0.2%. At the same time, due to the thin and easy cleaning of the oil film, the heat treatment and assembly efficiency of the rear track were significantly improved. Another port machinery heavy industry enterprise used BS-402 soft film anti-rust oil to protect the whole machine for large export grabs. After three months of maritime turbulence and tropical high-humidity salt spray environment, the metal surface of the equipment was still as bright as new after unsealing, which won high recognition from overseas customers. And some electrical shell stamping plants use BS-403 water-based anti-rust agent as an important line of defense after stamping and welding of steel plates, which not only eliminates the oil pollution problem caused by the oiling process, but also is listed as a recommended product by the local fire department because the water-based product has no flammable risk. For tool, measuring tool and precision mold manufacturers, BS-404 ultra-long-term anti-rust oil is synonymous with "warehousing peace of mind". Many companies use it for the storage of prototype parts and spare parts to ensure that it can still be used normally after several years.
Choosing anti-rust products is essentially an investment in metal life cycle management. Poor quality anti-rust oils are not only difficult to provide stable protection, but their residues can also corrode metals, pollute the environment, and even affect subsequent processing. The Hank BS-400 series allows users to no longer have to choose "one bottle goes all over the world" through precise model division. Whether it is the pursuit of thin-layer protection for clean appearance and precision fit, or the soft film heavy load in the face of harsh outdoor environments, or the water-based solution for environmentally sensitive areas, and the flagship protection that requires ultra-long-term storage, the BS-400 family has given a targeted answer. What's more, the series has found an excellent balance between protection, ease of operation and environmental safety. This kind of systematic thinking is the "new benchmark" that modern industry urgently needs.
Of course, any anti-rust product is not a panacea, and the correct choice is just as important as the standardized use. Hank technicians suggest that before using the BS-400 series, the metal surface should be treated with necessary rust removal, oil removal and drying treatment to ensure that the surface is clean and pollution-free, so that the anti-rust film and the metal substrate can achieve the best combination. For long-term storage of workpieces, a three-dimensional protection system should also be formed by combining auxiliary means such as desiccant and gas phase anti-rust bags. In addition, according to the regional climate, workshop environment, storage conditions and estimated anti-rust cycle, a reasonable choice of model or combination of use will be able to maximize the value of the Hank BS-400 series.
All in all, the Hank BS-400 series represents not only a set of anti-rust products, but also a set of scientific, systematic and customizable metal anti-rust solutions. It starts from the real pain points of users, accurately covers different processes and different protection levels with different models, so as to truly realize the "whole family, full scene, full cycle" anti-rust promise. In the future, with the in-depth development of intelligent manufacturing and globalized trade, the requirements of metal anti-rust will only get higher and higher. The Hank BS-400 series is ready to lead the industry to a new height of more reliable, more environmentally friendly and more efficient with a solid technical foundation and a spirit of continuous innovation. If you are struggling with metal rust prevention, you might as well turn your attention to this series and let the Hank BS-400 family escort your products, so that rust is no longer a problem.
