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API 5CT Q125 P110/C110 C90/R95/T95/C95 Seamless Carbon Steel Pipe&Tube for Oil1
Petroleum ProductsT95 API 5CT Seamless Carbon PipeAPI 5CT R95 Seamless Pipe
EZ Steel Industrial Co., Ltd.
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Product DescriptionCarbon Steel PipeSteel tubes are versatile and important products in the engineering and construction industries. Their unique material properties, manufacturing processes, and wide range of applications make them a crucial component.PackageReinforced plywood case bysted angle bar, Playwood cased Plastic bags packing, Condenser, heat exchanger tube packing, U-tube packed with wooden cases.Related steel gradesASTM A53/A53M, ASTM A106/A106M, ASTM A179/A179M, ASTM A192/A192M, ASTM A210/A210M, ASTM A333/A333M, ASTM A335/A335M, ASTM A500/A500M, ASTM A523/A523M, ASTM A135/A135MAPI 5L PSL1/PSL2, ISO 3183EN 10210, EN 10216, EN 10217, EN 10255JIS G3452, JIS G3454, JIS G3455, JIS G3456, JIS G3457GB/T 8162, GB/T 8163, GB/T 3087, GB/T 5310, GB/T 9711ASME B36.10M, ASME B36.19MTPITUV, SGS, BV, Lloyd's, etc.Payment:L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union,SpecificationAPI 5CT J55/K55/N80/N80Q/L80 LSAW Carbon Steel Pipes are longitudinal submerged arc welded (LSAW) carbon steel pipes manufactured in accordance with API Specification 5CT, which governs casing and tubing for oil and gas well applications. These pipes are designed to withstand high pressure, corrosion, and mechanical stress in downhole and surface operations. The grades (J55, K55, N80, N80Q, L80) indicate different strength levels and properties, ensuring suitability for varying well conditions (e.g., depth, pressure, corrosivity). LSAW technology ensures high structural integrity with a single longitudinal weld, making them ideal for large-diameter, heavy-wall applications.Size- Outer Diameter (OD): Typically ranges from 4.5 inches (114.3 mm) to 20 inches (508 mm), with common sizes for oilfield casing/tubing.- Wall Thickness: Varies by grade and application, from 5.21 mm (0.205 inches) to over 25 mm (1 inch), with strict tolerances (e.g., ±0.76 mm) to ensure pressure resistance.- Length: Available in standard lengths such as R1 (4.88–6.71 m), R2 (6.71–8.53 m), and R3 (8.53–10.36 m), or custom lengths as per customer requirements. Pipes may have threaded ends (STC, LTC, BTC) or plain ends for welding.Testing- Tensile Strength: Q125 (862–1034 MPa), P110/C110 (758–965 MPa), C90/R95/T95/C95 (620–827 MPa).- Yield Strength: Minimum 862 MPa (Q125), 758 MPa (P110/C110), 620 MPa (C90/R95/T95/C95).- Elongation: ≥14% (ensures ductility under stress).- Impact Testing: Charpy V-notch at -10°C or lower (required for sour service grades like C110) to verify toughness.- Hydrostatic Testing: 100% tested at 90% of specified minimum yield strength (SMYS) to detect leaks.- Nondestructive Testing (NDT): Ultrasonic Testing (UT) for internal/external defects, Eddy Current Testing (ECT) for surface flaws, and magnetic particle inspection (MPI) on ends/threads.- Corrosion Testing: Sulfide Stress Cracking (SSC) testing (per NACE TM0177) for sour service grades (e.g., C110).- Thread Inspection: Conformance to API 5B standards via gauging and visual checks for tight, leak-free connections.Composition- Carbon (C): 0.20–0.40% (varies by grade; controls strength and hardenability).- Manganese (Mn): 0.70–1.60% (enhances toughness and weldability).- Chromium (Cr): 0.50–1.50% (improves corrosion resistance and hardenability; higher in P110/C110).- Molybdenum (Mo): 0.15–0.50% (boosts high-temperature strength and resistance to sulfide stress cracking, critical for sour service in grades like C110).- Silicon (Si): 0.10–0.40% (aids deoxidation).- Sulfur (S): ≤0.015%, Phosphorus (P): ≤0.020% (strict limits to prevent brittleness, especially in sour environments).- Q125: Highest strength grade, with optimized Cr-Mo content for ultra-high pressure resistance.Application - Oil & Gas Exploration: Casing for wellbore stabilization, tubing for fluid extraction (oil, gas, water) in onshore and offshore wells.- High-Pressure Pipelines: Surface gathering lines and transmission pipelines for hydrocarbon transport.- Geothermal Wells: Handling high-temperature, corrosive fluids due to grade-specific resistance (e.g., L80 in sour conditions).- Mining: Piping for slurry transport and dewatering systems in harsh environments.- Surface Treatment: Anti-corrosion coatings (e.g., epoxy, galvanization) for external protection; internal coating (e.g., fusion-bonded epoxy) to reduce friction and corrosion.- Certifications: API 5CT monogram certification, ISO 9001, and compliance with regional standards (e.g., ASTM, EN) for global markets.- Quality Control: Traceability of raw materials (heat numbers), welding process validation, and third-party inspection (e.g., SGS, BV) for critical projects.- Packaging: Bundled with steel straps, wrapped in anti-rust paper, and loaded on wooden skids to prevent damage during transportation.Company Profile EZ STEEL INDUSTRIAL Co., Ltd, together with LONG-RUN METALS Co., Ltd, is the export division and window company of EZ STEEL GROUP, which was founded in 1996 and has been committed to the development and manufacturing of industrial tubes in the past 20 years. It is one of the largest steel tube manufacturing enterprise groups in China. CertificationsFAQ
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