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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel Pipe & Tube > API 5L Grade B Seamless Rectangular Steel Pipe for Oil and Gas Pipelines

API 5L Grade B Seamless Rectangular Steel Pipe for Oil and Gas Pipelines

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Product Spotlights

Hunan Yige's API 5L Gr B Seamless Rectangular Steel Pipe delivers unmatched pipeline integrity for oil & gas. Seamless construction eliminates weld failure points, ensuring superior pressure containment and safety. Compliant with rigorous API 5L standards, it offers reliable material performance. The rectangular profile optimizes flow capacity and space efficiency in constrained installations. ISO 9004/14000 certified manufacturing guarantees consistent quality. Customizable dimensions and surface treatments provide tailored solutions for global projects, backed by extensive export experience.

Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, API 5L Grade B Steel

Surface Treatment:

Other, Optional (e.g., Black, Galvanized)

Shape:

Rectangular

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Hunan Yige Special Steel Science Technology Co.,Ltd

2Yrs

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

7 days

Product Details
Company Profile
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Material Other, API 5L Grade B Steel

Surface Treatment Other, Optional (e.g., Black, Galvanized)

Shape Rectangular

Manufacturing Process Seamless

Application Oil and Gas Pipelines, Structural

Certification ISO9004, ISO14000

Standard Compliance API 5L Specification

Size Range Customizable dimensions available

Hunan Yige Special Steel Science Technology Co., Ltd., established in 2015 and operating from a modern 5,000-10,000 square meter facility in Changsha, China, specializes in high-performance steel solutions for demanding global industries. As an ISO-certified manufacturer, we proudly present our API 5L Grade B Seamless Rectangular Steel Pipe – engineered specifically for the rigorous requirements of oil and gas pipeline infrastructure. This product embodies our commitment to delivering robust, reliable, and precisely manufactured components that ensure operational integrity under high-pressure conditions and harsh environments. Our extensive reach across North America, South America, Europe, Asia, Africa, and Oceania underscores our capability to meet diverse international standards and project specifications.

Our seamless rectangular pipes offer distinct advantages for pipeline and structural applications:

Superior Strength & Integrity: The seamless manufacturing process eliminates weld seams, the most common failure point in pipelines. This results in:
- Enhanced pressure containment capabilities critical for oil and gas transmission.
- Uniform structural strength around the entire circumference.
- Improved resistance to internal and external stresses, including impact and bending.
API 5L Grade B Compliance: Manufactured strictly to API 5L specifications, ensuring:
- Consistent chemical composition (Carbon, Manganese, etc.) and mechanical properties (Tensile Strength, Yield Strength).
- Reliable performance in hydrocarbon service environments.
- Traceability and quality assurance throughout production.
Optimized Flow & Space Efficiency: The rectangular cross-section provides:
- Increased cross-sectional area for fluid flow compared to some round profiles within spatial constraints.
- Efficient bundling and space utilization in installations, reducing overall footprint.
- Flat surfaces simplify mounting and integration with support structures.
Material Excellence: API 5L Grade B steel offers an optimal balance of strength, weldability, and toughness, making it suitable for both pipeline and structural support roles within oil and gas facilities.
Customization: We offer tailored solutions to meet specific project needs:
- Wide range of dimensions (Wall Thickness, Width, Height).
- Various surface treatments (Black, Varnished, Galvanized upon request).
- Cutting to precise lengths.

Key Technical Specifications (Typical Range - Customizable):

Parameter	Value Range	Standard
Outer Width (A)	20mm - 500mm	API 5L ISO9004 ISO14000
Outer Height (B)	10mm - 300mm
Wall Thickness (t)	1.5mm - 40mm
Length	Up to 12m (Standard), Custom Lengths
Yield Strength (Min)	≥ 245 MPa	API 5L Gr B
Tensile Strength (Min)	≥ 415 MPa	API 5L Gr B

Benefits for Your Operations:

Enhanced Safety: Seamless construction minimizes leak risks, crucial for hazardous oil and gas transport.
Reduced Maintenance Costs: Superior corrosion resistance (especially with optional coatings) and structural integrity lead to longer service life and lower lifecycle costs.
Design Flexibility: Rectangular shape allows for innovative and space-saving pipeline routing and structural designs.
Global Project Compatibility: Manufactured to internationally recognized API and ISO standards, ensuring acceptance worldwide.
Supply Chain Reliability: Direct sourcing from a certified manufacturer (Hunan Yige) with a proven track record in supplying diverse global markets ensures consistent quality and timely delivery.

Backed by ISO 9004 (Quality Management) and ISO 14000 (Environmental Management) certifications, Hunan Yige operates stringent quality control protocols within our advanced manufacturing facility. Our established presence supplying North America, South America, Eastern & Western Europe, Southeast Asia, Africa, Oceania, the Middle East, and domestic China demonstrates our capability to meet the exacting standards of international oil and gas projects. We understand the critical nature of pipeline integrity. Choosing our API 5L Grade B Seamless Rectangular Pipes means investing in durability, safety, and operational efficiency. Contact us today to discuss your specific requirements, request a quote, or learn more about how our solutions can enhance your pipeline infrastructure.

Frequently Asked Questions (FAQ):

Q: What is the minimum order quantity (MOQ) for these pipes?
A: Our standard MOQ is typically 1 metric ton. However, we are flexible and can discuss requirements for initial samples or smaller trial orders.
Q: Can you provide pipes with different surface finishes besides black?
A: Yes. While black (mill finish) is standard, we offer options like varnish for temporary corrosion protection or hot-dip galvanizing for enhanced long-term corrosion resistance. Availability depends on size and quantity.
Q: What are the standard delivery lead times?
A: Lead times vary based on order size, customization requirements, and current production schedule. Generally, standard specifications ship within 15-30 days after order confirmation. We provide specific timelines upon order placement.
Q: Are test certificates provided with the shipment?
A: Absolutely. We provide Mill Test Certificates (MTCs) conforming to API 5L requirements, detailing chemical composition, mechanical properties, and hydrostatic test results for each batch.
Q: How does the rectangular shape benefit pipeline applications compared to round pipes?
A: Rectangular pipes offer advantages in specific scenarios: They allow for higher flow capacity within a given height constraint, enable tighter bundling of multiple lines, provide flat surfaces for easier mounting/support, and can be more efficient in certain structural frameworks within processing plants.
Q: Do you offer pipes compliant with standards other than API 5L?
A: Our core production is API 5L. However, we can discuss manufacturing pipes to other international standards (e.g., ASTM, EN) based on specific project requirements and feasibility.
Q: What packaging is used for export?
A: We use robust packaging suitable for long-distance sea freight, typically involving steel strapping on wooden pallets or in wooden crates, ensuring protection against damage during transit.
Q: Can you produce non-standard sizes outside the typical range?
A> We specialize in customization. Please provide your specific dimensional requirements (Width, Height, Wall Thickness, Length), and our engineering team will assess feasibility.