Can Tubing and Casing be used in offshore and corrosive environments?

Yes. Tubing and Casing are widely used in onshore and offshore oil and gas fields, including deepwater and corrosive environments. With appropriate material selection, corrosion-resistant alloys, and premium connections, they can ensure long-term well integrity and safe operation.

Pup Joint for OCTG

Name: API 5CT K55 J55 N80 L80 P110 Casing/Tubing /Coupling/Pup Joint for OCTG
Brand: Shanghai Baori Steel Industries Co., Ltd.
SKU: 2271300465

Shanghai, ChinaShanghai Baori Steel Industries Co., Ltd.

US$800.00-1,000.00

1 Ton

Product profile

After-sales Service

According to The Contract

Warranty

According to The Contract

Manufacturing Process

ERW and Seamless

Model NO.

Customized

Surface Treatment

Corrosion Proofing Water Based Paint

Operation Pressure

Atmospheric Pressure

Material

Cast Steel

Steel Grade

J55/K55/N80/L80/P110/C95/T95/Q125/etc

Connect Type

Nu/EU/Stc/Ltc/Btc

Transport Package

Protection Caps in Both Ends, Waterproof Paper Wra

Specification

Customized

Trademark

PETROTEX

Origin

Jiangsu, China

HS Code

73052000

Production Capacity

200000tons/Years

Key features

API 5CT Certified Quality: Manufactured strictly according to API 5CT standards with PSL1 & PSL2 options.

Wide Steel Grade Range: Available in J55, K55, N80, L80, P110, C95, T95, Q125, and corrosion-resistant 13Cr.

Sour Service Resistance: NACE MR0175 / ISO 15156 compliant options for enhanced H2S corrosion resistance.

Flexible Connection Types: Supports NU, EU, STC, LTC, BTC, and premium metal-to-metal sealing connections.

Dual Manufacturing Processes: Produced via both ERW and Seamless methods to meet diverse mechanical strength needs.

Customizable Specifications: Custom steel grades and connection types (Nu/EU/Stc/Ltc/Btc) available per contract.

Comprehensive Warranty: Long warranty period provided according to the contract terms.

Professional Technical Support: 24-hour online support and factory inspection for material, specs, and pressure.

Company profile

High Repeat Buyers ChoiceFast DeliveryLow MOQFlexible Customization

Shanghai Baori Steel Industries Co., Ltd.

Shanghai, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤1.60h

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 main difference between Tubing and Casing?

Casing is installed in the wellbore during drilling to support the well structure, prevent collapse, isolate formations, and protect freshwater zones. Tubing is run inside the casing after well completion and serves as the primary conduit for transporting oil and gas from the reservoir to the surface during production.

Q:What standards do Tubing and Casing comply with?

Tubing and Casing are typically manufactured in accordance with API 5CT standards. Upon request, products can also meet additional international or customer-specific requirements, including special inspection, testing, and certification.

Q:What steel grades are commonly available for Tubing and Casing?

Common steel grades include J55, K55, N80, L80, P110, C95, T95, and Q125. For corrosive or sour service environments, corrosion-resistant options such as 13Cr, stainless steel, and special alloy grades are also available.

Q:What connection types can be supplied?

Tubing and Casing can be supplied with API connections such as NU, EU, STC, LTC and BTC, as well as premium connections featuring metal-to-metal sealing for high-pressure and high-temperature applications.

Q:How do customers select the correct Tubing and Casing for a well?

Selection depends on well depth, pressure, temperature, production rate, and environmental conditions. Key factors include pipe size, wall thickness, steel grade, and connection type. Technical support is usually provided to help customers choose the most suitable solution.