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Double Hook

Double Hook
Double Hook

Product Name: Double Hook

1, hook must not affect the safety of the use of the performance of defects, hook defects shall not be welded, hook surface should be smooth, no cracks, folding, acute angle, burr, stripping, over burning defects;

2, can be in the hook openings at a short distance of the selection of two suitable location printing is not easy to wear signs, measuring the distance of the mark, as the use of detection in the opening of the basis for changes;

3, the hook material may choose 20 high-quality carbon steel or the hook special material dg20mn, Dg34crmo and so on forging makes, is forbidden to use the casting hook. The material of the board hook generally applies A3, C3 ordinary carbon steel, or 16Mn low-alloy steel;

4. The longitudinal axis of the plate hook and hook piece must be located in the rolling direction of the steel plate, and the hook piece is not allowed to splice;

5, the board hook and Hook piece application countersunk head rivet riveting, and in the plate hook and lifting material hanging point contact with high stress bending parts shall not be used rivet connection;

6, the board hook laminated between the full closed welding, allowing only intermittent welding;

7. The hook which has carried out overload test should be treated as scrap.

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