Inspection standards for various products of explosion-proof tools

Explosion-proof tools manufacturer shares with you.

1. Plum wrench

a. The shank is straight, the shape is consistent, and cracks are not allowed. The symmetry of the wall thickness of products below 32mm is allowed to differ by 1mm, and the difference of products above 32mm is allowed to differ by 1.5mm.

b. Basic dimensions and tolerance ranges are strictly checked and accepted according to technical requirements.

c. Three defects within 1mm2 of product grooves below 32mm are allowed. Three defects of 2mm2 in the product groove of 32mm or more are allowed.

2. Percussion wrenches

a. The shank is straight and no cracks are allowed. The wall thickness and symmetry of products below 32mm are allowed to differ by 1mm, and the wall thickness and symmetry below 150mm are allowed to differ by 2mm.

b. The basic dimensions and tolerance ranges are accepted according to technical requirements.

c. For products below 32mm, three defects within 1mm2 of the slot are allowed, and for products below 80mm, three defects are allowed within 3mm2. Three defects of 5mm2 are allowed in the product groove of more than 80mm.

3. Live wrenches

a. The head and handle of the adjustable wrench are straight, the outline is clear, and no defects such as cracks and forgings are allowed.

b. The span should move flexibly on the full-body guide rail.

C. Two defects in the body slot (4mm～8mm) of 1mm2 are allowed, and two places of (10mm-24mm) of 2mm2 are allowed.

4. Pipe wrenches

a. There should be no cracks, burrs, obvious pinch marks, oxide layers on the parts of the pipe wrench, defects that affect the surface quality, and the head and the handle should be straight.

b. When adjusting the nut by hand, the movable jaw should move flexibly in the full stroke.

5. Hammers

a. The hammer body is upright, symmetrical, clear in outline, and there should be no defects such as cracks and burrs on the surface.

b. The basic dimensions and weight of the hammer body are strictly controlled within the tolerance range.

c. The hammer body and shank are straight and firmly installed.

6. F wrenches

The two claws of the F wrench should be symmetrical and straight with the shank, and there should be no defects that affect the appearance quality, such as cracks, obvious clamping marks, trachoma, and oxide layer.

7. Screwdriver

The cutter bar and the shank are straight, without distortion, and the surface is smooth and free of pinch marks.

8. Pliers and pump pliers

a. Visual appearance, parallelism, symmetry, clear outline, without cracks, burrs, and other defects.

b. The rotation part of the pliers is flexible and free, the edge part is not misaligned, and the tooth part is clear.

Nine, other categories

a. No burrs and cracks on the surface.

b. For products with handle, the head and the handle are straight and the installation is firm.

c. For products with blades, the blades are not allowed to have gaps, curling, etc.

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