Product Description
API Casing – High-Strength Seamless Steel Pipe for Oil & Gas Wells
API Casing is a premium-grade, large-diameter seamless steel pipe designed to serve as a structural retainer for oil and gas wellbores. It is a critical component in well construction, providing reinforcement to prevent borehole collapse, protect subsurface formations, and ensure safe drilling operations. Once inserted into the wellbore, the casing is cemented in place to maintain well integrity, facilitate drilling fluid circulation, and enable efficient hydrocarbon extraction.
Specifications
| Sizes | OD 4-1/2”~20” |
| Grade | H40, J55, K55, N80, M65, L80, C90, C95, T95, P110, Q125 |
| Length | R1, R2, R3 |
| Standard | API SPEC 5CT |
| Application | Serves as walls of a well |
| Packing | Bundle or bulk |
Key Features & Specifications
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Material Grades: GR.B, ST52, ST35, ST42, ST45, X42, X46, X52, X56, X60, X65, X70, SS304, SS316, Duplex 2205, 2507, 3507, SUS201, SUS304, SUS316, SUS906
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Size Range: 1/4" to 24" (13.7 mm to 610 mm OD)
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Wall Thickness: 2.87 mm to 16 mm
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Minimum Yield Strength: 35,000 psi (35K) – Higher grades available for high-pressure applications
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Smooth Wall Design: Ensures optimal fluid flow and reduces friction during installation
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Connection Types: STC (Short Thread Coupling), LTC (Long Thread Coupling), BTC (Buttress Thread Coupling), P (Premium Threaded)
Standards & Certifications
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Manufacturing Standards: API 5L, ASTM A106 Gr.B, ASTM A53 Gr.B, ANSI A210, ANSI B36.10M, ASTM A1020, ASTM A179, BS 3059-2, DIN 17175, DIN 1630, DIN 2448
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Certifications: ISO 9001, SGS, CTI, ROHS, BV (Bureau Veritas)
Surface Treatment Options
To enhance durability and corrosion resistance, API Casing pipes are available with various surface treatments, including:
Applications
API Casing is widely used in:
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Oil & Gas Wells: Structural support for wellbores, preventing formation collapse
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Liquid Delivery Systems: High-pressure fluid transportation
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Structural Piping: Construction and industrial applications
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High & Low-Pressure Boiler Tubes: Heat-resistant performance
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Petroleum Cracking: Seamless steel tubes for refinery operations
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Gas & Oil Pipelines: Reliable transportation of hydrocarbons
FAQ
1.who are we?
We are based in Henan, China, start from 2012, There are total about 51-100 people in our factory.
2. how can we guarantee quality?
Always final Inspection before shipment.
3. why should you buy from us not from other suppliers?
Owning 12 years researching experience, our company has following advantages: the advanced R&D technology; the high-qualified workers; the various premium products; the excellent enterprise culture; the superior special customized service.
4. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF;
Accepted Payment Currency:USD,EUR;
Accepted Payment Type: T/T,L/C;
More Details
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Our company
Oasis Oil Tools Co., Ltd, is a famous manufacturer which integrates the research and development, design, manufacture and sell water well screens/Johnson screens/wedge wire screen/rod base screen/continuous slot screen/non-enforced Johnson screen, oil well screens and sand control well screens, bridge slotted well screens, pipe based well screens/perforated base pipe with screen jacket/pipe base screen/reinforced Johnson type screen, perforated pipe (base pipe), gravel pre-packed well screens, passive water intake screens etc. water, oil and gas well filtering products as well as API/Stainless Steel Casing& Tubing and pipes and industrial parts.
Please contact with us for more details.
Our techinical team will give you the best choice.
Mail: oapipe@163.com
Whatsapp:+8613949678537
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Large-Diameter Seamless Steel Pipe Essential for Oil Well Screen and Drilling Operations API Casing Images
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