Tianjin Dalipu Oil Country Tubular Goods Co., Ltd is currently an emerging production and marketing enterprise based production Casing and Tubing.Located in Tianjin, near the capital Beijing, and Tianjin Port the largest port in north of China, owning convenient transportation, unique geographical conditions. 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. Size of oil Tubing: 1.9"-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 Ype and Right Ype. Steel Grade(Materials):H40,J55,K55,N80,L80,C-90,C95,T95, , P110,Q125,13Cr-80,13Cr-110,Super 13Cr.1CR,3CR,5CR,9CR,15CR,17CR,28CR,PSL1,PSL2,PSL3 Oil Casing, Tubing Size of oil Tubing: 1.9"-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 Ype and Right Ype. Steel Grade(Materials):H40,J55,K55,N80,L80,C-90,C95,T95, , P110,Q125,13Cr-80,13Cr-110,Super 13Cr. Line Pipes: Size: 1/2"(21.3mm)-40"(1016mm) Steel Grade(Materials): Gr.B,X42.X46.X52.X60.X65.X70.X80.X100 WT: SCH10SCH20,SCH30,SCHTD,SHC40,SCH60,XS,SCH80,SCH100 , ,SCH120,SCH140,SCH160,XXS Alloy Steel Pipe: Size: 6mm-560mm Steel Grade(Materials):P5（Cr5Mo),P9(Cr9Mo),P11,P22 (10CrMo910,P91（T91),P92 an,d so on.WB36.Also can order manufacture by the customers requirement. Contact: James Wang (General Export Dept.) E-Mail:jameswang@dlpoctg.com WhatsApp:18892208811 Skype:dlp04dlp04