How to identify the quality of explosion-proof wrench
we are in the procurement of hardware things, such as ring wrench, live wrench, percussion wrench, how to identify the kind of brand of explosion-proof wrench good quality? now small make up to teach you a few small methods, let you easily deal with this problem.
1. Rotate the pulley of Hukou from the maximum to the minimum after taking it. See if there is a local area with clamping teeth. See if the movable circulation degree
2 and the wrench weight are similar to those of the same level. If it is relatively light, it is necessary to identify the raw materials. You can use a sharp instrument to slightly cut the expression and paint, look at what raw material
3 is inside, and carefully investigate whether the tiger's mouth is regular and whether there is any appearance of non-parallel or fracture.
The second is the brand, the price level. I produced the explosion-proof wrench series, raw materials are selected beryllium copper alloy and aluminum copper alloy. Beryllium bronze is a national grade II C product and does not detonate gas when operating in hydrogen with a concentration of 21%. The other is aluminum bronze, which is a national grade II B product and does not detonate gas when operating in ethylene gas with a concentration of 7.8. Because the beryllium bronze data is zero magnetic, so the beryllium bronze thing is also called antimagnetic things, can be in the magnetic field environment security tasks. The product of these two kinds of raw materials can play the function of explosion-proof after processing and disposal. And the beryllium bronze alloy product is both explosion-proof and antimagnetic products, this product is rare suitable for use in the increasingly harsh places.
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