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A Certain Tower Type Equipment With On-site Welding Belongs To The Second Category Of Medium-pressure Vessels Of Pressure Vessels. The Unit That Can Undertake The On-site Welding Should Have The License (). AD2 Level Manufacturing License (the Second Category Of Low And Medium Pressure Vessels) BD1 Level Manufacturing License (the First Category Of Pressure Vessels)
A certain tower type equipment with on-site welding belongs to the second category of medium-pressure vessels of pressure vessels. The unit that can undertake the on-site welding s...
22小时前