The tanks are 100% welded by TIG. We are factory sales, we take any wholesale order, feel free to ask.And we will do the same for you automatically! Thank you for your cooperation. The item "NEW Front Mount Intercooler 600 x 300 x 76mm Core Universal 3 Inch In/Outlet" is in sale since Monday, December 5, 2016. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Turbos, Nitrous, Superchargers\Turbo Chargers & Parts". The seller is "coolingsuper" and is located in San Bernardino, California. This item can be shipped worldwide.