Problem from Introduction to Electrodynamics, 4th edition, by David J. Griffiths, Pearson Education, Inc.
With API 5CT oil casing and API 5L oil line pipe as the main products,with production and sales integration, professional domestic and foreign trade operations, strength financial , rich experience.
Products: Oil Casing, Tubing, Line Pipe, Seamless Steel Pipe, Steel Pipe(ASTM/API/ASME/DN/BS/JIS/EN),Alloy Seamless Steel Pipe.
Performing Standard:API-5CT API-5L ASTM- A106-Gr.B ASTM- A53 DIN BS JIS EN.
Size of oil Tubing: 1.315″-4 1/2″ Ends: NUE/EUE.
Size of oil Casing: 4 1/2″ -20″Ends Connection: STC/LTC/BTC, Premium Connections. We can manufacture all kinds of Pup Joint of Tubing and Casing, Coupling with Left type and Right type.
Steel Grade(Materials):H40,J55,K55,N80,L80,C-90,C95,T95,P110,Q125,13Cr-80,13Cr-110,Super 13Cr.