Parveen Industries Pvt. Ltd. Offers API Threaded Adapters. The API Threaded Adapters falls in the category of the Wireline pressure Control Equipment and Tool String. Parveen Industries Pvt. Ltd. Is an ISO 9001: 2000 certified company. The API Threaded Adapters have an API pin thread down and a quick box connection up. These adapters are applicable for lower working pressure.