Maryland Welding Technology Inc. AWS Certified Welder Tests and TrainingCertified welder tests provide a definitive series of procedures which specify how to correctly execute various weld processes. By gaining a welding credential through testing at our AWS ATF s’s(American Welding Society Accredited Test Facility) , you are demonstrating proficiency in meeting a specific weld process requirement. Your welding credentials received at Md Weld Tech Inc. AWS ATF are nationally recognized and can benefit your salary increase and employment prospects.