AB

Steel studs, all-thread studs, and stud bolts, all used with pipe flanges and valves for oil and gas projects, power plants, water works projects and heavy construction projects; steel heavy hex bolts used in oil and gas projects, power plants, water works projects and heavy construction projects; steel heavy hex nuts used in conjunction with steel studs or steel heavy hex bolts, all used in oil and gas projects, power plants, water works projects and heavy construction projects