What certifications does the product hold?

The products hold CE, RoHS, ISO 9001, API 5CT, GOST, and ISO 14001 certifications.

What is the warranty period for the casing?

We provide a 1-year warranty for our oil casing pipes.

API 5CT Oil Casing Pipe Seamless Steel Casing for Oil Well Drilling

Name: API 5CT Oil Casing Pipe Seamless Steel Casing for Oil Well Drilling
Brand: Shanghai Baori Steel Industries Co., Ltd.
SKU: 2269609145

Shanghai, ChinaShanghai Baori Steel Industries Co., Ltd.

US$800.00-1,000.00

1 Ton

Product profile

After-sales Service

According to Contract

Warranty

1 Year

Certification

CE, RoHS, ISO 9001:2000

Model NO.

customisation

Applicable Medium

Natural Gas, Crude Oil

Structure

Plug-In

Material

Steel

Standard

API5CT

Tubing Outer Diameter

2 3/8''-4 1/2'' (60.3mm-114.30mm)

Casing Outer Diameter

4 1/2''-20''(114.3mm-508mm)

Wall Thickness

0.205''-0.635''

Length

R1,R2,R3

Steel Grade

J55/K55/N80/L80/P110/C95/T95/Q125/L80-13cr

Transport Package

Waterproof Paper Wrapped

Specification

Customized

Trademark

Baori Steel

Origin

China

Key features

High Strength & Integrity: Premium steel with exceptional tensile, compressive, and crush resistance for deep wells.

Corrosion Resistance: Resistant to H2S/CO2 with options for FBE, 3PE, and galvanised finishes.

API & ISO Compliance: Strict adherence to API 5CT/ISO standards with API certification marks.

Wide Specification Range: OD 4.5-20 inches, various wall thicknesses, and special thread connections.

Multiple Steel Grades: Available in J55, N80, L80, P110, C95, T95, Q125, and 13Cr alloys.

Quality Control System: Thread parameters exceed API standards by 20% with 100% inspection coverage.

Proven Manufacturing: 15+ years experience, own factory, and 200,000 tonnes annual capacity.

Global Export Experience: Exported to 50+ countries with established export process systems.

Company profile

High Repeat Buyers ChoiceFast DeliveryLow MOQFlexible Customization

Shanghai Baori Steel Industries Co., Ltd.

Shanghai, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤1.64h

AI-Powered supplier vetting

SummaryThe supplier is a small limited company with three employees, offering Spring Steel Cold Coin and a broad range of hardware, building-material, ceramic, automotive, motorcycle, timber, packaging, and related products. It has flexible customization capability but no ODM service, popular-brand OEM capability, SDK, overseas warehouse, overseas showroom, overseas agent or branch, or in-stock service capacity. The supplier reports one year of export experience and lead times of within 15 working days to one month. Its service controls include 10 qualified suppliers and relevant records, but no written assessment procedure or corrective/preventive-action procedures. Quality-assurance, traceability, fire-drill, and environmental-assessment statuses are unknown, while quality-control test equipment is listed as zero. A TUV Rheinland audit is recorded, but the audit result is listed as 0; the stated report validity ended on 2025-10-14. No evidence of customer cases or offline trade-show participation is provided.

After-Sales capabilityThe supplier has 10 qualified service-capability suppliers and accepts FOB, CIF, CFR, LC, and T/T terms, but it has no overseas warehouse, showroom, overseas agent or branch, or in-stock service capacity. Complaint handling is recorded as “Others,” without a defined method, while quality-assurance and traceability statuses are unknown.

R&D capabilityThe supplier launched no new products during the past year and does not provide ODM services, popular-brand OEM services, or an SDK. One R&D engineer is listed, whose responsibility is to handle product photos, so the available evidence does not demonstrate substantive product-development capability.

Production capacityThe supplier has three employees, no in-stock capability, and no overseas service infrastructure. Reported lead times are within 15 working days to one month in both off-season and peak season, but quality-control test equipment is listed as zero and formal service corrective/preventive-action procedures are absent.

Customization capabilityThe supplier explicitly states that it provides flexible customization. This is direct evidence of customization availability, although no details are provided regarding customization scope, tooling, technical support, or delivery impact.

Product Q&A

Q:What is the primary function of oil casing?

To support the wellbore walls, isolate formations, prevent blowouts, and establish a secure pathway for oil and gas extraction.

Q:How should one select the appropriate casing steel grade?

Selection depends on well depth, formation pressure, and corrosive environment. Common grades include N80 (general conditions), L80 (corrosive environments), and P110 (deep wells with high pressure).

Q:What is the difference between API threads and special threads?

API threads offer cost-effective versatility; special threads provide superior sealing, tensile strength, and torsional resistance, suitable for high-pressure gas wells or complex well conditions.

Q:What key parameters are required when ordering casing?

Outer diameter, wall thickness, steel grade, thread type, length, and quantity. Specify whether API compliance is required.

Q:How to determine if casing quality meets standards?

Verify API certification marks and third-party inspection reports. Inspect physical markings, dimensional accuracy, thread machining quality, and non-destructive testing records.