Oil Line Pipe
输油管线管
Steel Pipes / Longitudinal Submerged Arc Welded Steel Pipe
Oil Line Pipe
输油管线管
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Product Introduction
Our JCOE straight seam submerged arc welded pipes act as core conveying carriers for the whole petroleum industry chain, specially developed for large-bore, high-pressure and long-distance oil & gas transportation. The forming and welding craftsmanship directly decides the overall safety and service lifespan of long-haul pipelines.
Key Mechanical Performance Highlights
Superior pressure-bearing capacity All finished pipes pass strict mechanical tests. Their minimum yield strength is guaranteed to reach or exceed the theoretical value calculated according to pipeline design pressure, fully adapting to high working pressure operating conditions.
Excellent low-temperature toughness For projects built in cold frozen zones, the pipe’s Charpy impact energy is no less than 48J, which effectively avoids brittle fracture under extremely low temperatures.
Durable anti-fatigue property Buried long-distance pipelines are constantly affected by wind loads and uneven soil settlement. Our oil line pipes can withstand 1,000,000 fatigue load cycles without cracking, supporting stable long-term operation.
Classification of Welded Pipe Manufacturing Technologies
Three mainstream fabrication processes are applied for welded steel pipes: ERW (Electric Resistance Welded Pipe): Only applicable to medium and small diameter pipelines SAWH (Spiral Submerged Arc Welded Pipe) SAWL (Straight Seam Submerged Arc Welded Pipe, our core JCOE forming technology) At present, SAWH and SAWL are the two mainstream production solutions for all large-diameter energy transmission pipelines.
Complete Technical Specifications
Dimension & Production Capacity Table
Specification Item | JCOE Bare LSAW Pipeline | Anti-Corrosion Coated Pipe |
Outer Diameter Range | 457mm – 1422mm (18" to 56") | 219mm – 1620mm |
Wall Thickness Range | 8mm – 50mm | Not applicable |
Standard Single Pipe Length | 5800mm – 12300mm | 5800mm – 12300mm |
Annual Production Volume | 150,000 metric tons | Coating Output: 1200 square meters per 12 working hours |
Material Options & Corresponding Advantages
High-Strength Carbon Steel (Q235, Q345, X42/X46/X52/X56/X60/X65/X70/X80 etc.) Cost-effective material for high-pressure oil delivery. When matched with 3-layer PE external anti-corrosion coating, it balances stable performance and low overall project cost.
Duplex Stainless Steel Combines high tensile strength and outstanding corrosion resistance, suitable for pipeline systems carrying fluid containing hydrogen sulfide (H₂S). Its thermal expansion coefficient is close to carbon steel, simplifying on-site welding construction.
Chrome-Moly Alloy Steel Boasts remarkable heat resistance, fit for high-temperature oil product transmission inside refineries. Normalizing heat treatment is conducted during production to eliminate internal residual stress.
Adopted International Standards
Base Pipe Standards API Spec 5L (PSL1 & PSL2), ASTM A252, ASTM A672, ISO 3183 and other international industrial specifications
External Anti-Corrosion Coating Standards FBE / Double FBE Coating: CAN/CSA Z 245.20, DIN 30671 2LPE / 3LPE Polyethylene Coating: CAN/CSA Z 245.21, DIN 30670 2LPP / 3LPP Polypropylene Coating: DIN 30678, NFA49711
Typical Application Scenarios
Oilfield Gathering Network Transport crude oil extracted from wellheads to central gathering stations, used for short-distance, low-pressure field collection pipelines.
Inter-Regional Long-Distance Trunk Lines Cross-provincial or cross-border oil transmission mainlines with design working pressure between 8MPa and 12MPa. Large-diameter LSAW pipes are adopted to boost transport throughput.
Refinery Internal Process Piping Customized internal lining for different refined oil mediums, matched with outer epoxy enamel anti-corrosion coating. Medium & small bore sizes are preferred to cut daily operation costs.
Trading & After-Sales FAQ
Q1: What Incoterms can you provide for shipment? A: Our standard delivery term is FOB Tianjin Port. We also accept EXW, CFR, CIF, DDP and DDU. We will offer detailed freight quotations so you can pick the most convenient and cost-effective delivery plan.
Q2: What logistics methods are available for goods delivery? A: We provide two mature shipping solutions: ocean freight and international railway transport.
Q3: What after-sales protection can you offer? A: We supply a full 2-year quality warranty for all oil line pipes. Any factory-caused quality defects will be fully handled until you are completely satisfied.
Product Core Keywords
large diameter JCOE LSAW pipe, API 5L oil transmission pipeline, X grade line pipe, 3PE anti-corrosion steel pipe, buried crude oil pipeline, petroleum trunk line pipe, high strength welded pipe, oil & gas pipeline manufacturer
Specifications
Specification Item | JCOE Bare LSAW Pipeline | Anti-Corrosion Coated Pipe |
Outer Diameter Range | 457mm – 1422mm (18" to 56") | 219mm – 1620mm |
Wall Thickness Range | 8mm – 50mm | Not applicable |
Standard Single Pipe Length | 5800mm – 12300mm | 5800mm – 12300mm |
Annual Production Volume | 150,000 metric tons | Coating Output: 1200 square meters per 12 working hours |