[Q&A] Catalytic Coking Reformate Blending Edition 20171101
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Participation: Reward of 3~5 Wealth points； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: What are the main types of welding machines? Answer: There are DC welders and AC welders. Use your fingers to get involved – our ultimate goal is for everyone to acquire knowledge. http://bbs.hcbbs.com/static/image/hrline/1.gif http://bbs.hcbbs.com/static/image/hrline/2.gif The answers will be announced automatically after two days. 【Daily Question】Summary post for 2017 on the catalytic coking and reforming oil blending version: http://bbs.hcbbs.com/thread-1811219-1-1.html 【Q&A】Summary post for 2017 on the catalytic coking and reforming oil blending version: http://bbs.hcbbs.com/thread-1826018-1-1.html
AC arc welder, DC arc welder, gas shielded welder
AC arc welder, DC welder, TIG welder, CO2 shielding
AC arc welder, DC welder, TIG welder, CO2 shielded arc welder
There are two types: AC transformer type and DC generator type.
AC arc welders, DC welders, TIG welders, CO2 shielded arc welders, butt welders, spot welders, submerged arc welders, high-frequency welders, flash butt welders, pressure welders, collision welders, laser welders.
Welding machines mainly include AC arc welders, DC arc welders, gas shielded welders, etc
Arc welders, resistance welders, and special welding machines