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  • Aak Hydraulic Directional Control Valve Won Another Large Order In 2 Years - China

    price: 100.00 Dollar US$

    AAK hydraulic directional control valve, which has been used for 2 years, is free of rust and corrosion.

    It stands out from 3 hydraulic valve manufacturers.

    Joseph finally received a large order for 1000 hydraulic directional control valves from customer.

    Joseph is the purchasing manager of a hydraulic pump company in Italy.

    Two years ago, the company received a test order for a special chemical hydraulic pump, which needs a hydraulic direction control valve.

    The customer requires that after 2 years, if the hydraulic directional control valve is free of rust and corrosion, it will have the opportunity to obtain a large order.

    The boss asked Joseph to find a very professional hydraulic valve manufacturer.

    Joseph knew that relying only on the existing hydraulic valve suppliers is not enough to guarantee the quality.

    He checked with all the hydraulic valve manufacturers he had contacted before and the new ones searched online, and selected 16 hydraulic valve factories, including AAK Hydraulic Valve.

    He asked all hydraulic valve manufacturers to provide 2 samples of hydraulic directional control valves according to the drawing requirements of the customer for testing at their headquarters.

    According to the post analysis to the drawing of hydraulic directional control valve from Joseph, we found that there is no problem to meet the accuracy, sensitivity and durability of this hydraulic directional control valve, except that the finish of the outer surface of the hydraulic directional control valve must be free of abnormality, rust and corrosion after 2 years of use, which is too uncertain.

    We didn't receive email from Joseph until 15 days after we sent out the hydraulic directional control valve samples.

    According to their simulation test, only the hydraulic directional control valves from 3 factories can be approved to send samples to their customer.

    It would take 2 years for AAK to know if we can get the order of hydraulic directional control valve.

    At that time, we were very surprised that there were such strange customers.

    We almost forgot the test order of this hydraulic directional control valve 2 years ago.

    Last week, Joseph sent an email asking about the production time and new price of 1000 hydraulic directional control valves, and told us that the surface of the hydraulic directional control valves from other two hydraulic valve manufacturers began to have scratches, corrosion, fading and rust after more than a year of use, only the surface gloss of AAK hydraulic direction control valve does not change.

    In fact, when we sent out the hydraulic directional control valve samples, we were not 100% sure to meet this special requirement, because we used a new process to proofing.

    We know that the conventional nickel plating, chromium plating, zinc plating, blackening and other processes basically can not keep the same appearance after 2 years of use.

    We adopted electroless nickel plating.

    The principle of this process is to generate a coating on the metal surface by solution chemical reduction reaction, and the coating is amorphous.

    After treatment, the surface of the metal is smooth, corrosion-resistant and wear-resistant, and the coating film has few pores and uniform thickness.

    At the same time, the hardness of the heat treatment can reach HRC70 - After confirming the order, Joseph privately reminded us several times that the surface finish treatment of large goods should be careful.

    His boss said that after this order was shipped smoothly, there would be more and more inquiries later, and his salary was raised by 2 levels.

    AAK hydraulic directional control valve is rust free and corrosion free.

    It is still the same as the new one after being used for 2 years.

    Welcome to have a small try! AAK HYDRAULIC VALVE (135) 2022-01-11


    Company Contact:


    • Phone: +8657483008115

    • Address: Bona Business Building, No. 456 Taikang Middle Road,, Yinzhou, Ningbo, China, Ningbo , Zhejiang , China

    • Email: Email


    Published date: February 16, 2022

    • Business Description: Focused on the Development and Manufacturing of Hydraulic Valves since 2006, in Ningbo China

      Since its establishment 12 years ago, 6 first-line international brand importers have placed orders with AAK for 5 consecutive years, with a re-peat order rate of 62%.

      Exported to more than 20 countries, AAK Hydraulic Valves used on "AIRCRAFT" have been supplied to Russian customers.

      68%+ of the high precision hydraulic valves exported from Ningbo Port come from AAK hydraulic valves.

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