What is the material of the special heavy-duty sleeve?




The sleeve tool offers superior dimensional accuracy, tensile strength, and wear resistance compared to standard steel tools. Its surface treatment features a black coating with a gray hammer pattern finish, enhancing both durability and grip.
Heavy-duty sleeves are available in both metric and imperial sizes. Despite having the same concave shape, the sleeve head is designed as a hexagonal cylinder, allowing for greater versatility. The inner hexagonal edges are precisely arranged according to the bolt type, making it easy to choose the right size for different applications.
The term "sleeve head" refers to a socket wrench, which is a specialized tool used for tightening or loosening screws, particularly those that require a hex nut. This makes it an essential tool in mechanical and industrial settings where precision and strength are crucial.
These special hand tools are custom-made based on drawings or specific construction requirements. Unlike regular consumer hardware tools, they are built with higher hardness, a more robust structure, and a broader range of applications. Examples include steel adjustable wrenches, steel tap wrenches, special sleeves, steel F-wrenches, steel hex crowbars, top handles, thimbles, and listening needles.

Special tools are developed using German technology, following the DIN7444 standard (GD/T4388-1995, GB/T4389-1995, GB/T43390-1995). They are manufactured from high-quality alloy structural steel, using die forging and processed through large presses ranging from 630 to 1600 tons. This ensures exceptional quality and performance under demanding conditions.

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'What is the material of the special heavy-duty sleeve?

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