Lone Star Tubular Service, Inc. is a Lone Star, Texas; Oil Country Tubular Goods service company specializing in API threading, specialty machining, coupling service and hydrostatic testing.
LSTSI operates under API license 5CT-0024, and is listed in the Composite List of Manufacturers as a Threader.
Initial operations began in 1980 with portable testing and coupling installation. Current operations include a 150 acre service and storage facility to help meet the needs of our CUSTOMERS.
Currently our machines will thread from 4 ½ to 13 3/8.