Hebei Borun Petroleum Pipe Manufacturing Co.,Ltd , as the subsidiary company of BORUN, is specialized in making Casing Pipe, EU Tubing Pipe as well the accessorie such as Couplings, Pup Joints, Thread Protectors. Hebei Borun Steel Trade Co.,Ltd, as the head office,has more than 15 years of experience in dealing with steel pipes and foreign trade business. It gives customers more access to steel purchase and business negotiation. The main products we mainly supply include: seamless pipes, API 5L pipeline, casing pipe, oil tubing, galvanized pipes, ERW steel pipe, LSAW steel pipe, SSAW (spiral) steel pipe, Square steel tube/square hollow section etc. And the steel pipes can be provided according to GB, ASTM, API, DIN, JIS standards. Besides our main products and specifications, we can also make the steel pipes with the special size and material as per customers' requirements.* CARBON SEAMLESS STEEL PIPE1.StandardGB/T8162/8163/3087/5310, ASME B36 10, ASTM A106/A53, API 5L/5CT, DIN2448/1629, EN10210/10219, JIS G3466, ASTM A1792.Steel Grade10#, 20#,45#,16Mn, GRB, Q345B, X42-56, ST44, ST52，S355, S275, STKR490, A500, A1793.O.D.21.3MM-610MM4.W.T.SCH10-SCHXXS5.Length5m--12m6.CertificatesAPI 5L/ 5CT, CE, ISO7.UsagesPetroleum, oil, gas, water, shipbuilding, large constructions, machinery, power plant etc8.EndsPlain or beveled, with plastic caps on both ends if required *CASING PIPEDescriptions: 1 Production Process: Seamless & ERW 2 Specification: API 5CT /5B3 Out Diameter: 4 1/2"- 20" (114.3mm-508mm) 4 Thread: LTC ( Long Round Thread), STC ( Short Round Thread), BTC ( Buttress Thread) and other premium connections which can be made as per the given drawings5 Length:R1(4.88-7.62m), R2(7.62-10.36m), R3(10.36-14.63m))6 Steel Grade: H-40, J55, K-55, N-80, L-80, P110, Q-1257 Surface: Corrosion proofing water based paint8 Heat treatment: Normalized, Quencher+Temper