Metal Welding Machine
1. Permanent: The mark will not fade due to environmental factors (touch, acid and reduced gas, high temperature, low temperature, etc.). 2. Anti-counterfeiting: The engr...
USA metal craft welding machine
Standard machines for arc welding service shall be designed and constructed to carry their rated load with rated temperature rises where the temperature of the cooling air does not exceed 40 deg. C. (104 deg. F.) and where the altitude does not exceed 3,3 ...