Nail welder/ Punching and Shearing Machine/ Insulation nails welder price Usage: mainly used in shipbuilding welding heat nail hull interior thermal insulation and pipe insulation nails welding class. Features: This product has been specially equipped with thermal insulation for the shipbuilding and pipeline industries nail design, welding structure of professional design, gun lines up to 1 meter Hakka, welding small, easy to move, you can weld thicker than 0.8 mm outside plate, welding strength, high welding speed and easy operation.