What should be paid attention to when welding galvanized steel pipe
1. Need to polish in the early stage However, the galvanized layer of the weld must be polished away, otherwise bubbles, trachoma, and false welding will occur. It also makes the weld brittle and the...
How to use drilling tools scientifically？
The bit is directly broken part of the rock, its shape, structure, material, processing technology, etc. directly affect the crushing effect and the life of the bit. The drilling requirements for the...
What is stick welding?
Stick welding is also known as shielded Metal Arc welding (SMAW) or manual metal arc welding(MMA) . Stick welding is an arc welding process in which coalescence of metals is produced by heat from an...
Rock drilling machinery and pneumatic tools
During operation, one hopper of the fuselage discharges material to both sides. The small diameter front wheel drives the steering wheel. The larger diameter rear wheels are the rollers. The engine...
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