Southwest Galvanizing It has been more than four decades since the founding of Southwest Galvanizing in Houston, TX. We have since grown to become the largest galvanizing operation in the Houston area. We began with two kettles in a 440 sq. ft. building and have continued to expand our capabilities. Today we have a total of six kettles and a production capacity of 5,500 tons per month. Our Houston facility now also include metalizing and sandblasting services. Our sales team has excellent customer service skills to follow an order from beginning to end. We take pride in our ability to ensure that our customers are completely satisfied.