Description: BBN steel is a well-known steel manufacturer and service provider in China, API 5L PSL2 X70 line pipe is our superior product, we are favored by customers with high quality, competitive price and excellent service
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API 5L PSL2 X70 Line Pipe (L485) | High-Strength Seamless & Welded Pipe | 1/2" – 48" OD
High-Strength Carbon Steel Line Pipe for High-Pressure Transmission | 70,300 psi (485 MPa) Min. Yield Strength | Reliable Low-Temperature Toughness & Excellent Weldability | MTC, EN 10204 3.1 / 3.2, Full API Inspection Reports
485 MPa / 70,300 psi YieldMinimum yield strength of 70,300 psi (485 MPa) — built for long-distance and heavy-duty energy pipeline projects.
PSL2 Premium StandardPSL2 adopts stricter chemical, mechanical, delivery and testing requirements than PSL1 for high-safety service.
Seamless & Welded Full RangeSeamless (SMLS), ERW, welded, fabricated and CDW pipes supplied with complete certifications.
01Product Overview & Specifications
API 5L PSL2 X70 (L485Q) is a high-strength carbon steel line pipe for high-pressure oil, gas and water transmission. Complying with the API 5L 44th edition standard, it features a minimum yield strength of 70,300 psi (485 MPa), ideal for long-distance and heavy-duty energy pipeline projects.
API 5L specifies two product levels: PSL1 and PSL2. PSL2 adopts stricter chemical, mechanical, delivery and testing requirements. X70 PSL2 pipe offers high strength, reliable low-temperature toughness and excellent weldability, widely used for onshore / offshore high-pressure trunk pipelines and heavy-duty fluid systems. We supply full-size seamless and welded X70 PSL2 pipes with complete certifications and custom processing.
In-stock: 3–7 days; custom production: 10–30 working days
Certification
MTC, EN 10204 3.1 / 3.2, full API standard inspection reports
Custom Service
Custom cutting, pipe end processing, anti-corrosion coating, personalized packaging
02API 5L Grade Series & Delivery Conditions
X70 belongs to the high-grade X-series pipeline steels — the grade number indicates the minimum yield strength in Ksi, which is why X70 is also designated L485 (485 MPa).
API 5L Grade
Min. Yield (Ksi)
Min. Yield (MPa)
A25
25
172
A
30
207
B
35
241
X42
42
290
X46
46
317
X52 / L360
52
360
X60
60
414
X65 / L450
65
450
X70 / L485
70
485
X80
80
552
Acceptable delivery conditions for API 5L PSL2 line pipes (designated by suffix letter):
R — As-rolled, normalizing rolled or normalized formed
N — Normalized, or normalized formed, or normalized and tempered
Q — Quenched and tempered
M — Thermomechanical rolled, or thermomechanical formed
Note: X70Q (L485Q) denotes the quenched and tempered delivery condition — the data in sections 03 and 04 below apply to X70Q. Other delivery conditions are available on request.
03Chemical Composition
Chemical composition (max, %) of API 5L PSL2 X70Q steel pipe — tighter phosphorus and sulfur limits are one of the key differences from PSL1.
Element
Max %
Element
Content %
C (Carbon)
0.18
V (Vanadium)
g
Si (Silicon)
0.45
Nb (Niobium)
g
Mn (Manganese)
1.80
Ti (Titanium)
g
P (Phosphorus)
0.025
Other
h
S (Sulfur)
0.015
—
—
Note g: Unless otherwise agreed, Nb + V + Ti ≤ 0.15%. Note h: Unless otherwise agreed, Cu ≤0.50%, Ni ≤0.50%, Cr ≤0.50% and Mo ≤0.50%. Technical data is based on API Spec 5L-2007; the exact product analysis of each pipe is stated in its Mill Test Certificate (MTC / EN 10204 3.1 or 3.2).
04Mechanical Properties
Room-temperature mechanical properties of API 5L PSL2 X70Q (L485Q) line pipe — the strength level required by the most demanding long-distance trunk lines.
485 – 635Yield Strength Rt0.5MPa
570 – 760Tensile Strength RmMPa
≤0.93Ratio Rt0.5 / RmMaximum
70,300 psiMin. Yield Strength485 MPa
Pipe Grade
Yield Strength Rt0.5 (MPa)
Tensile Strength Rm (MPa)
Ratio Rt0.5 / Rm Max.
L485Q / X70Q
485 to 635
570 to 760
0.93
Note: Values apply to both seamless and welded PSL2 pipe as specified in API Spec 5L-2007. Elongation and CVN impact values are verified per order agreement and recorded in the inspection reports supplied with delivery.
05Strict Testing Standards
All API 5L PSL2 X70 pipes undergo full standard testing to eliminate defects and ensure high safety for high-pressure pipeline operation.
Test Items
Test Purpose
Chemical Product Analysis
Verify all element indicators fully comply with API 5L PSL2 X70 standards
Tensile & Bending Test
Ensure stable high strength and structural ductility under pressure
Hydrostatic Pressure Test
Validate high-pressure resistance and overall pipeline tightness
Flattening Test
Inspect pipe body uniformity and internal defect-free quality
CVN Impact Test
Mandatory PSL2 test to ensure excellent low-temperature fracture toughness
MT & NDT Non-destructive Testing
Completely eliminate surface and microscopic internal defects
06Application Fields & Procurement
From long-distance trunk lines and offshore systems to heavy-duty petrochemical service — X70 covers the top end of the API 5L range.
High-Pressure Energy Transmission
Long-distance high-pressure crude oil and natural gas trunk transmission pipelines.
Offshore & Onshore Pipeline Projects
Marine pipeline engineering and complex terrain onshore energy pipeline systems.
Petrochemical Industry
High-pressure petrochemical medium transmission pipelines and supporting facilities.
Structural & Mechanical Engineering
Heavy-duty pressure-bearing pipeline structures and mechanical component fabrication.
1
Sufficient Stock
Full-size X70 PSL2 pipes in sufficient stock, delivered within 3–7 days.
2
Custom Processing
Custom cutting, pipe end processing and beveling, completed within 10–30 working days.
3
Anti-corrosion & Packing
Anti-corrosion coating and personalized packaging for export shipment.
4
PSL2 Quality Control
Strict PSL2 control with MTC, EN 10204 3.1 / 3.2 and full API reports.
Full-spec API 5L PSL2 X70 seamless and welded line pipes from sufficient stock
NPS 1/2" – 48" OD with SCH5 to SCH XXS wall thickness options
Custom cutting, pipe end processing, anti-corrosion coating and packaging
MTC, EN 10204 3.1 / 3.2 and full API standard inspection reports
Get Your API 5L PSL2 X70 Line Pipe Quotation Now
Send us your pipe type (seamless / welded), OD and wall thickness (or schedule), length, quantity, end type and coating requirements. We will reply with the latest stock, official datasheets and competitive factory prices within 24 hours.
BBN Steel has established a complete set of production and supplier management system processes to ensure the improvement of product quality and better service to users.
Production Control
BBN Steel has established a complete production quality control process to ensure every link from research and development to mass production.
Supplier management
Our supplier selection will consider factors such as health and safety, ethics, environmental protection, price and quality to better serve customers.
Certification & Patent
We have successively won various international authoritative certifications, GB /T19001-ISO9001: 2000 quality management system was implemented.
After sales service
We provide booking space, shipping tracking service and after-sales service, we will always be first-class products and perfect pre-sale and after-sales service.
Get in Touch
Welcome to contact us through online consulting, emails and hotline if you are interested in our company or products. Our staff will reply you within 24 hours.
Address: HIGH-TECH DEVELOPMENT ZONE, ZHENGZHOU, CHINA
