To 1.25 times the allowable working load for 10min static test for pre-embedding.
Hook should be tested once a year, the test to 1.25 times the allowable working load for 10min static test with a magnifying glass or other methods of inspection, there should be no cracks, cracks and residual deformation. The three dangerous sections should be cleaned with kerosene and examined with a magnifying glass to see if there are any cracks. Plate hook should check the bushing, pin wear.
Hooks should be official professional factory according to the technical conditions of the hook and the safety specification requirements of the production and manufacture, the product should have the manufacturer's quality certificate, otherwise not allowed to use. In the process of use should often check the hook has no cracks or serious deformation, corrosion and wear phenomenon.
Expanded Information:
Personal Defense Door Installation of the relevant requirements of the regulations:
1, fixed to check the distance between the door frame and the reserved door opening, if the gap is large, you can be properly chiseled on the side of the reserved opening, supporting the template after the use of concrete to fill in the joints, gently striking. To achieve strength after the removal of the template, timely and careful maintenance; if the gap is small, sealing, closing and other plastering.
2, after the door is transported to the construction position, drop the hook, the door will be placed on the ground, and check the door frame line, the sling will be loosened, and then use a large crowbar pry, a little force can be pried, the door frame prying to the location of the line, and use hardwood wedges to temporarily fixed.
3, with a line drop to adjust the verticality of the door frame, according to the line to adjust the front and back of the door frame, left and right, up and down position, after verification of the correctness of the wooden wedge stuffed tightly, and then welded the anchor bar in the wall tendons fixed.
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