Longtaidi is located in China, recognized as a professional supplier in providing integrated solutions for oil and gas company. Equipped with multi-base production facilities in south and north of China mainland, Longtaidi supplies high quality piping products including API 5L Line Pipe, carbon and alloy pipe, Casing and Tubing, Steel plate, Sucker Rod, Steel Pipe Fittings, valves, and equipment for oil and gas industries. All our items with full Material Traceability and Certification.