Oasis Oil Tools Co., Ltd,
Oasis Oil Tools Co., Ltd
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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 |
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
Size Range: 1/4" to 24" (13.7 mm to 610 mm OD)
Wall Thickness: 2.87 mm to 16 mm
Minimum Yield Strength: 35,000 psi (35K) – Higher grades available for high-pressure applications
Smooth Wall Design: Ensures optimal fluid flow and reduces friction during installation
Connection Types: STC (Short Thread Coupling), LTC (Long Thread Coupling), BTC (Buttress Thread Coupling), P (Premium Threaded)
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
Certifications: ISO 9001, SGS, CTI, ROHS, BV (Bureau Veritas)
To enhance durability and corrosion resistance, API Casing pipes are available with various surface treatments, including:
Black paint
Varnish coating
Oiled finish
Hot-dip galvanized
Anti-corrosion coatings (epoxy, FBE, 3LPE)
API Casing is widely used in:
Oil & Gas Wells: Structural support for wellbores, preventing formation collapse
Liquid Delivery Systems: High-pressure fluid transportation
Structural Piping: Construction and industrial applications
High & Low-Pressure Boiler Tubes: Heat-resistant performance
Petroleum Cracking: Seamless steel tubes for refinery operations
Gas & Oil Pipelines: Reliable transportation of hydrocarbons
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;
