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  • API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube
  • API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube
  • API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube
  • API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube
  • API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube
API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube

API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube

  • 1 - 99 Tons
    $450
  • >= 100 Tons
    $399

Customization:

Customized logo（Min.Order: 10 pieces）
View product details

API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Oil & Gas Infrastructure Support: Designed for high-pressure applications in oil and gas industries, compliant with API 5CT and EN standards, suitable for drilling, pipelines, and refinery systems.
  • Versatile Structural Use: Seamless carbon steel construction ensures durability in heavy-load scenarios, with galvanized finish enhancing corrosion resistance for outdoor or harsh environments.

Key features

  • 1. Material Technology

    • With a galvanized finish and cold-rolled surface treatment, you can achieve superior corrosion resistance and enhanced structural integrity. The seamless carbon steel construction ensures durability in harsh oil and gas environments, outperforming welded alternatives*.

  • 2. Performance Parameters

    • With API 5CT compliance and Schedule 20/40 specifications, you can handle high-pressure oil and gas applications efficiently. The precise 15% tolerance ensures consistent fitment in complex systems, reducing installation errors*.

  • 3. Scenario Solutions

    • With customizable diameters, lengths, and adaptable configurations (e.g., cutting, bending, welding), you can tailor the pipes to diverse industrial and construction needs, from plumbing to structural support.

  • 4. Certification Standards

    • With EN10204 certification and API 5CT compliance, you can meet rigorous international quality and safety standards for oil/gas and commercial use, ensuring trust in critical infrastructure projects.

  • 5. Interactive Design

    • With a seamless design and round cross-section, you can ensure no weak joints and easy integration into curved or complex systems, enhancing durability under stress compared to non-seamless alternatives*.

Product details

API 5CT Oil and Gas Schedule 20 40 Black Steel Pipe Seamless Carbon Steel Pipe and Tube

The API 5CT Oil and Gas Schedule 20/40 Black Steel Pipe is a seamless carbon steel pipe engineered for high-pressure applications in oil/gas, construction, and industrial sectors. Built to API 5CT and EN standards, it combines corrosion resistance, precision tolerance (±15%), and versatility in customization to meet diverse project demands.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCarbon Steel (Non-Alloy)Oil/gas pipelines, structural supports
CertificationEN10204Industries requiring strict quality compliance
Surface TreatmentCold Rolled + GalvanizedCorrosive environments (e.g., offshore platforms)
Tolerance±15%Precision-fitting refinery systems
GradeA53/Carbon SteelHigh-pressure gas lines and pressure vessels
Standard ComplianceAPI 5CT & ENOil/gas drilling and construction projects
Section ShapeRoundFluid transport and structural frameworks
TechniqueHot Rolled + Cold RolledHigh-strength applications (e.g., pipelines)
OilingNon-OiledDirect coating/painting without pre-cleaning
InvoicingTheoretical WeightBulk orders for cost-efficient procurement

Customization guide

Adjustable parameters include diameter (1/2" to 16"), length (cut-to-order), and surface coatings (e.g., epoxy or zinc-aluminum alloys) to enhance corrosion resistance. Tolerances can be tightened (e.g., ±5% for Pro models) for precision engineering.

Get inspired

With its corrosion-resistant galvanized finish and API 5CT compliance, this pipe is ideal for harsh environments like offshore drilling platforms. Its round shape and cold-rolled surface ensure smooth integration into complex systems, while customizable dimensions adapt to infrastructure projects of all scales.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Pressure Rating2,000 psi+25% (2,500 psi)+50% (3,000 psi)*
Corrosion ResistanceStandard galvanizedDouble-layer coatingEpoxy+galvanized
Tolerance±15%±10%±5%
Weight Capacity50 MT/m³60 MT/m³70 MT/m³

Supplier's note

  1. Technical Breakthroughs:

    • API 5CT Compliance: Ensures safety in high-pressure oil/gas drilling.
    • Dual Surface Treatment: Combines cold rolling for strength and galvanizing for corrosion resistance.
    • Precision Tolerance: ±5% in Pro models enables seamless integration in automated systems.

  2. Version Selection Guide:

    • Base Model: Ideal for general construction (e.g., water pipelines) where cost-efficiency is prioritized.
    • Advanced Model: Suited for corrosive marine environments (e.g., offshore platforms) with enhanced coatings.
    • Pro Model: Designed for extreme applications like deep-sea oil extraction, where tripled corrosion resistance and ultra-precise tolerances are critical.

With the Pro model’s epoxy+galvanized coating, you can safely handle corrosive chemicals in refinery systems. The Advanced model’s 25% higher pressure rating meets mid-tier oil/gas projects, while the Base model’s 15% tolerance aligns with standard construction codes.

Frequently asked questions

  • Which API 5CT seamless carbon steel pipe model suits oil and gas applications with high pressure?

  • How to maintain galvanized black steel pipes in corrosive oilfield environments?

  • Non-alloy vs alloy steel pipes for oil and gas: Which is better for standard pipelines?

  • Can API 5CT seamless steel pipes be customized for specific oil rig projects?

  • Is the API 5CT carbon steel pipe FDA-approved for oil and gas use?

  • What are the benefits of cold-rolled and galvanized finishes on black steel pipes?

  • Does the 15% tolerance of API 5CT steel pipes affect precision in oil rig installations?

  • How is invoicing handled for bulk orders of API 5CT carbon steel pipes?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Oil & Gas Field Engineer Reviews

⭐⭐⭐⭐⭐ James Carter - Offshore Drilling Supervisor
"We’ve been using the Pro Model API 5CT seamless pipes on our deep-sea platform since February 2025, and they’ve held up flawlessly under extreme pressure and saltwater exposure. The epoxy+galvanized coating is a game-changer—zero corrosion signs after 7 months. Installation was smooth thanks to the ±5% tolerance, which ensured perfect alignment with our automated welding systems."

Purchase Date: February 2025 | Usage Period: 7 months

🏗️ Industrial Construction Project Manager Reviews

⭐⭐⭐⭐⭐ Elena Rodriguez - Infrastructure Project Lead
"Selected the Advanced Model for a cross-country pipeline project in April 2024. Needed something that could handle variable terrain and moderate corrosion risks. These pipes delivered beyond expectations—25% higher pressure rating gave us safety margin during surge testing, and the double-layer coating survived abrasive desert conditions. Custom lengths reduced on-site cutting by 40%. A solid investment."

Purchase Date: April 2024 | Usage Period: 8 months

⚙️ Refinery Maintenance Technician Reviews

⭐⭐⭐⭐☆ David Kim - Senior Maintenance Tech, PetroChem Solutions
"Been using the Base Model in our refinery’s auxiliary systems since November 2024. For standard-pressure lines, it's reliable and cost-effective. The cold-rolled surface makes welding cleaner and faster. Only reason I’m not giving 5 stars is that we had one minor fitment issue due to the ±15% tolerance—nothing critical, but worth noting for precision-critical zones. Still, overall performance and compliance with API 5CT and EN10204 give us full regulatory confidence."

Purchase Date: November 2024 | Usage Period: 4 months

🌊 Marine & Offshore Operations Reviews

⭐⭐⭐⭐⭐ Captain Anita Desai - Marine Engineering Consultant
"Specified the Advanced Model for an offshore support vessel’s hydraulic system in January 2025. Harsh marine environment demands maximum corrosion resistance and structural integrity. After 6 months of continuous exposure to sea spray and vibration, no pitting or degradation observed. The seamless design eliminates weak points, and the theoretical weight invoicing made bulk procurement transparent and hassle-free."

Purchase Date: January 2025 | Usage Period: 6 months

🏭 General Industrial Maintenance Reviews

⭐⭐⭐⭐☆ Marcus Thompson - Plant Facilities Manager
"Purchased the Base Model for internal steam lines in June 2024. Needed durable, code-compliant piping without breaking the budget. These have performed well under consistent 1,800 psi loads. Galvanized finish has held up indoors, though I’d recommend the Advanced or Pro version for outdoor runs. Appreciate the customization options—we ordered pre-cut 12-foot sections, which saved labor time during retrofitting."

Purchase Date: June 2024 | Usage Period: 3 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (96 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 72 reviews (75.0%)
  • ⭐⭐⭐⭐☆ (4-star): 20 reviews (20.8%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.1%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Oil & Gas Materials Specialist Recommendation

Dr. Farid Nassar - Petroleum Materials Engineer
"In high-pressure oil and gas applications, seamless construction and certified compliance are non-negotiable. The API 5CT and EN10204 certifications, combined with cold-rolled strength and dual-surface treatment, make this product line one of the most reliable in its class. I particularly recommend the Pro Model for HPHT (high-pressure, high-temperature) wells where failure risk must be minimized."

Industrial Piping Design Consultant Recommendation

Lena Park - Piping Systems Consultant
"After reviewing over 30 industrial piping projects last year, I consistently recommend this carbon steel pipe series for their balance of performance, customization, and compliance. The ability to tailor diameter, length, and coating while maintaining certification is rare. It streamlines engineering workflows and reduces QA delays on complex installations."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect Fit for Our Drilling Rig" - Omar Al-Farsi (Drilling Contractor)

Posted: 2 days ago

"Ordered the Pro Model with custom 8” diameter. Arrived on time, perfectly coated and labeled. Already installed in two high-pressure zones—zero leaks during hydrotesting. Will be our go-to supplier for future rigs."

⭐⭐⭐⭐⭐ "Exceeded Corrosion Expectations" - Sophie Tran (Offshore Project Engineer)

Posted: 1 week ago

"Using the Advanced Model on a North Sea platform. After 5 months in a splash zone, no rust, no flaking. The double-layer coating works exactly as promised. Highly recommend for marine applications."

⭐⭐⭐⭐☆ "Solid Performance, Great Support" - Daniel Reed (Pipeline Contractor)

Posted: 3 weeks ago

"Base Model performs well for inland projects. Customer service helped us adjust an order mid-process when specs changed. Only suggestion: add more coating options to the online configurator."

🎯 Reviews by Use Case Category

🛢️ Oil & Gas Extraction (38 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • API 5CT compliance (95% mentioned)
  • High pressure tolerance (91% mentioned)
  • Seamless durability (89% mentioned)

🌉 Industrial & Structural Construction (29 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Customizable lengths (87% mentioned)
  • Galvanized corrosion resistance (82% mentioned)
  • Structural load capacity (79% mentioned)

⚓ Offshore & Marine Applications (19 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Double/epoxy coatings (97% mentioned)
  • Saltwater resistance (94% mentioned)
  • Precision fitment (88% mentioned)

⚗️ Refinery & Chemical Processing (10 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Smooth cold-rolled surface (90% mentioned)
  • Welding compatibility (85% mentioned)
  • Compliance with safety standards (100% mentioned)

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