API 11AX-0033


API Spec Q1

TQM – Total Quality Management

At Don-Nan, quality means more than just complying with the API Spec. Q1 and API 11AX requirements. We believe quality is exceeding expectations, doing things right the first time, and anticipating customer needs. This ensures customer satisfaction is always the end result, because it is our first priority. This belief extends beyond manufacturing to all aspects of the business.

Quality control and inspection are priorities at Don-Nan. From raw material to finished products, all products are tracked, inspected and documented.Our gauges are tested and certified monthly, ensuring precise machining on all products.