Designed for oil and gas drilling, completion, and production operations, our octg casing manufactured from high-strength carbon and alloy steels. Boasting exceptional tensile strength, collapse resistance, corrosion resistance, and sealing reliability, our Oil Country Tubular Goods (OCTG) are widely used in onshore/offshore oilfields. Suitable for shallow, deep, ultra-deep wells, as well as high-pressure high-temperature (HPHT) and sour service (H₂S/CO₂) environments, they ensure structural integrity and efficient production throughout the well's lifecycle.
Key Features
Standards:
API SPEC 5CT: Global industry standard, covering grades J55, K55, N80, L80, C90, T95, P110, Q125.
ISO 11960: Equivalent to API 5CT, used in international projects.
NACE MR0175 / ISO 15156: For sulfide stress cracking (SSC) resistant materials in sour environments.
Supplementary Standards: SY/T 6194, EN 10216-2.
Materials:
Carbon Steel: J55, K55, N80, L80 (13Cr, 9Cr), P110, Q125
Alloy & Corrosion-Resistant Alloys:
C90, T95 (high strength, SSC resistant)
13Cr, Super 13Cr, Duplex 2205, Incoloy 825, Hastelloy C276 (for severe corrosive wells)
All materials meet strict chemical, mechanical, and inclusion control requirements.
Dimensions:
OD: 2-3/8" (60.3mm) to 20" (508mm)
Wall Thickness: Standard (ST), Extra Strong (EXT), XL (Extra Heavy)
Length: R1 (16–25 ft), R2 (25–34 ft), R3 (34–48 ft), customizable
Thread Types:
API Threads: Long Thread (LC), Short Thread (SC), Buttress (BTC)
Premium Connections: VAM TOP, Hydril Wedge, TenarisTaq, WLT Tight Joint (for HPHT & high seal integrity)
Applications:
Casing: Stabilizes wellbore, isolates formations, prevents collapse (surface, intermediate, production casing).
Tubing: Transports oil/gas to surface, core component of production string.
Suitable for conventional wells, shale gas, tight oil, offshore platforms, and geothermal wells.
Certifications:
Classification Society Approvals:
While OCTG is primarily downhole, for offshore drilling modules or subsea systems, we support:
CCS Material Certification
ABS, DNV Factory Assessment (for integrated system compliance)
End-User & Engineering Company Qualifications:
Approved supplier for:
International: Saudi Aramco, ADNOC, Shell, BP, TotalEnergies, Chevron, ExxonMobil
Domestic: CNPC, CNOOC, Sinopec
EPCs: TechnipFMC, Saipem, Petrofac, CPECC, COOEC
Quality & System Certifications:
API 5CT Monogram License (globally recognized)
ISO 9001, ISO 14001, ISO 45001
NACE MR0175 / ISO 15156 Compliance (SSC resistance)
PED 2010/35/EU (CE Marking)
SAE AS9100D (for advanced quality management)
Common Customer Questions (Q&A Format)
Q: Do your casing and tubing comply with API 5CT? Do you have the API Monogram?
A: Yes, all products are manufactured to API SPEC 5CT and hold API 5CT Monogram certification. Each pipe is stamped with the API mark for global traceability and acceptance.
Q: Can you supply H₂S-resistant casing/tubing, such as C90, T95, or 13Cr?
A: Yes. We supply C90, T95, L80 13Cr, and Super 13Cr grades compliant with NACE MR0175, suitable for sour service environments.
Q: What is your maximum casing OD? Do you supply 20" surface casing?
A: Max OD: 20" (508mm). We routinely supply large-diameter surface casings (13-3/8", 18-5/8", 20") for deep and offshore wells.
Q: Do you offer premium connections like VAM TOP or TenarisTaq?
A: Yes, we provide premium connections including VAM TOP, Hydril Wedge, TenarisTaq, and WLT Tight Joint for HPHT and high-seal applications.
Q: Are you approved by Saudi Aramco or ADNOC?
A: Yes, we have passed technical audits by Saudi Aramco, ADNOC, CNPC, and other major operators, and are qualified suppliers.
Q: What is the typical lead time? Do you have stock for common sizes?
A: Standard lead time: 30–60 days. Common grades (J55, N80, P110) and sizes (7", 9-5/8") are in stock for fast delivery.
Q: Do you provide full quality documentation, such as MTC and NDT reports?
A: Yes, each batch includes MTC (Type 3.1/3.2), chemical analysis, mechanical tests (tensile, impact, hardness), flattening/flaring, UT/ET reports.
Q: Can you manufacture per customer SPEC or MDS?
A: Yes, we fully support custom production per customer specifications, MDS, drawings, or technical agreements, including special grades, tolerances, heat treatment, and threads.
Q: Are your products suitable for offshore drilling? Can you support class society inspection?
A: Yes, widely used in offshore projects. We support third-party inspections by ABS, CCS, etc., and provide compliance documentation.
Q: What is your export packaging? Does it meet international shipping standards?
A: Packaged with rust preventive oil, plastic end caps, steel strapping, and marine protection frames. Clearly labeled (grade, heat no., size, standard), compliant with API RP 5L1 and international shipping requirements.
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