To become a certified welder, you must first be sure that you have the proper training and experience as a welder. This is usually a requirement when applying for a certification. Visit the local licensing or certifying government agency which has jurisdiction over the county or city where you intend to practice your profession as a welder. Typically, you will be required to submit some documents like certificates of training or proof of experience, You will need to fill up some forms and pay some fees to get your certification. In some cases, you may also need to pass a certification exam.