Tube And Casing manufacturers API Casing Product description API Casing is one of seamless steel pipe, a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.It is inserted into a well bore and cemented in place to protect both subsurface formations and the well bore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi. API Casing material: H40, J55, K55, M65, N80, L80, P110, Q125 etc, Custom-made stainless steel material with API connection ASTM pipe size: Size 4-1/2" to 20" Outside Diameter : 114.3mm to 508.00 mm The thickness of the tubing: 5.21mm to 16.66mm Connection type of Stainless Steel Tubing: STC, LTC, BTC, P Standard:API-5CT, API-5B, API5L , Other material, unit length, connection could follow the ASTM A106 Gr.B, ASTM A53 Gr.B, ANSI A210-1996, ANSI B36.10M-2004 , ASTM A1020-2002,ASTM A179-1990 ,BS 3059-2,DIN 17175 ,DIN 1630 ,DIN 2448 Certification: ISO9001, SGS, CTI, ROHS, BV, CE Grade: SUS201,SUS304,SUS316, Duplex2205, Duplex2507,Duplex3507, SUS906 Surface Treatment: Paint, varnish, galvanized, anti-corrosion coatings Application: Liquid delivery; Structure pipe; High and low pressure Boiler tube; Seamless steel tubes for petroleum cracking; oil pipe; gas pipe. We can also manufacture other special connection types according to customers’ requirements. SizeDiameterWall ThicknessWeight (lb/ft) inmminmmNUEEUE 2 3/8”2.37560.320.1674.244.00— 2.37560.320.1904.834.604.70 2.37560.320.2546.455.805.95 2 7/8”2.87573.020.2175.516.406.50 2.87573.020.2767.017.807.90 3 1/2”3.500088.900.2165.497.70— 3.500088.900.2546.459.209.30 3.500088.900.2897.3410.20— 4”4.000101.600.2265.749.50— 4.000101.600.2626.6510.7011.00 4.000101.600.3308.3813.20— 4 1/2”4.500114.300.2716.8812.6012.75 4.500114.300.3378.5615.20— Tube And Casing manufacturers website:http://www.oawellscreen.com/tube-and-casing/