API 5L X65 Steel Plate is a high-performance pipeline steel designed for long-distance oil, gas, and fluid transmission systems under high pressure and harsh environments. As a high-strength line pipe steel plate, it offers an excellent balance of yield strength, weldability, and toughness, making it one of the most widely used grades in global energy infrastructure projects.
As a professional API 5L X65 steel plate supplier and exporter, we provide stable stock availability, competitive pricing, and global delivery solutions for EPC contractors, pipeline fabricators, and energy project buyers.
API 5L X65 Steel Plate Supply (Stock, Price & Export Ready)
We supply API 5L X65 steel plate in hot rolled condition with strict compliance to API 5L PSL1 and PSL2 standards, covering both offshore and onshore pipeline applications.
- Available Thickness: 6mm – 100mm
- Width Range: 1000mm – 4000mm
- Length: 6000mm – 18000mm (custom cutting available)
- Delivery Condition: Hot Rolled / Normalized / Thermomechanical Controlled Process (TMCP)
- Stock Availability: Regular stock for fast shipment
- MOQ: 10–25 tons depending on specification
- Export Packaging: Seaworthy steel bundling + anti-rust protection
We support global export to the Middle East, South America, Africa, Southeast Asia, and CIS regions with flexible logistics and project-based supply pricing.
API 5L X65 Steel Plate Specification (PSL1 / PSL2 Standard)
The specification of API 5L X65 pipeline steel plate follows international pipeline steel standards for high-pressure transmission systems.
- Standard: API 5L (Latest Edition)
- Grade: X65 (L450 equivalent strength level)
- Product Form: Steel Plate / Coil / Cut-to-length Plate
- Delivery Types: PSL1 / PSL2
- Heat Treatment: Normalizing / TMCP / Controlled Rolling
- Surface Condition: Black / Oiled / Shot Blasted
This grade is engineered for welded pipeline construction, offering excellent forming ability for UOE, JCOE, and spiral pipe manufacturing.
API 5L X65 Chemical Composition
The API 5L X65 steel chemical composition is controlled to ensure high strength and weldability.
- Carbon (C): ≤ 0.12%
- Manganese (Mn): 1.10% – 1.70%
- Silicon (Si): ≤ 0.45%
- Phosphorus (P): ≤ 0.025%
- Sulfur (S): ≤ 0.015%
- Niobium (Nb): ≤ 0.05%
- Vanadium (V): ≤ 0.10%
- Titanium (Ti): ≤ 0.04%
Micro-alloying elements (Nb, V, Ti) enhance grain refinement and improve toughness for low-temperature pipeline environments.
API 5L X65 Mechanical Properties
The API 5L X65 mechanical properties are designed for high-pressure oil and gas transmission pipelines.
- Yield Strength: 450 – 565 MPa
- Tensile Strength: 535 – 760 MPa
- Elongation: ≥ 18% (depending on thickness)
- Impact Toughness: ≥ 27J at -20°C (PSL2 requirement typical)
- Hardness: ≤ 250 HB
This combination ensures excellent resistance to internal pressure, external stress, and harsh environmental conditions such as offshore corrosion and low-temperature service.
API 5L X65 Steel Plate Applications
The API 5L X65 steel plate for pipeline applications is widely used in energy and infrastructure industries:
- Oil & gas transmission pipelines (onshore & offshore)
- Natural gas distribution systems
- High-pressure water transmission pipelines
- LNG plant piping systems
- Petrochemical refinery pipeline structures
- Long-distance cross-country pipeline projects
- Offshore platform pipeline fabrication
It is especially preferred in EPC projects requiring high strength-to-weight ratio and long service life.
Why Choose Our API 5L X65 Steel Plate Supplier
Choosing the right API 5L X65 steel plate supplier directly impacts project safety, cost efficiency, and delivery reliability.
- Stable stock for urgent project requirements
- Competitive factory-direct export pricing
- Full MTC (EN 10204 3.1 / 3.2 available upon request)
- Strict API 5L PSL1 / PSL2 compliance inspection
- Cutting, beveling, and machining services
- Professional export packaging for sea shipment
- Experience in large EPC and pipeline tenders
We focus on long-term cooperation with distributors, contractors, and energy infrastructure developers worldwide.
API 5L X65 Steel Plate FAQ
1. What is the price of API 5L X65 steel plate?
The price depends on thickness, quantity, delivery condition, and global steel market trends. As a supplier and exporter, we offer project-based pricing with discounts for bulk orders and long-term contracts.
2. What is API 5L X65 steel plate used for?
It is mainly used for oil and gas pipeline construction, including high-pressure transmission lines, offshore pipelines, and petrochemical infrastructure requiring high strength and toughness.
3. What is the difference between API 5L X65 vs X60 steel plate?
X65 has higher yield strength (450–565 MPa) compared to X60, meaning better pressure resistance and suitability for deeper or higher-stress pipeline systems.
4. What is the delivery time for API 5L X65 steel plate export orders?
For stock sizes, delivery can be within 7–15 days. For production orders, typical lead time is 20–40 days depending on specifications and quantity.