Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of lsaw carbon steel pipe for oil and gas in China. Welcome to buy discount lsaw carbon steel pipe for oil and gas made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
LSAW Carbon Steel Pipe For Oil And Gas is high‑quality longitudinal submerged‑arc welded carbon steel pipe specially designed for onshore & offshore crude oil, natural gas gathering, transmission and trunk pipeline systems. Manufactured strictly to API 5L (PSL1 / PSL2), ASTM A106 Gr.B, ISO 3183 and GB/T 9711 standards, it adopts high‑quality carbon & low‑alloy steel plates and double‑sided submerged‑arc welding process. With full‑penetration weld seam, high pressure resistance, good low‑temperature toughness, stable mechanical performance and reliable anti‑corrosion property, this pipe is widely used in long‑distance oil‑gas trunk lines, oil‑gas field gathering pipelines, refinery transmission pipelines and cross‑regional energy transportation projects, providing safe, durable and cost‑effective pipeline solutions for global oil and gas industry.
Basic Product Specifications
Product Name: LSAW Carbon Steel Pipe For Oil And Gas
Executive Standard: API 5L PSL1 / PSL2, ASTM A106 Gr.B, ISO 3183, GB/T 9711
Manufacturing Process: LSAW (Longitudinal Submerged Arc Welding), plate cold forming, double‑sided SAW welding, cold expansion, weld normalization, stress relief
Steel Grade: API 5L X42, X52, X56, X60; ASTM A106 Gr.B
Outer Diameter (OD): 219 mm – 1626 mm
Wall Thickness (WT): 8 mm – 45 mm, custom thick‑wall up to 60 mm for high‑pressure service
Standard Length: 12 m (standard), 6 m optional, custom fixed lengths available
Delivery Condition: Normalized; Stress‑relieved for low‑temperature & sour gas environments
Surface Finish: Black bare steel with anti‑rust oil; 3PE, 2PE, FBE anti‑corrosion coating optional
Pipe End: 30°/45° beveled ends for field welding; plain ends optional
Application: Long‑distance oil‑gas trunk pipelines, oil‑gas field gathering lines, refinery & petrochemical pipelines, offshore oil‑gas platform connecting pipelines, cross‑regional natural gas transmission projects
Grade & Process Explanation
Carbon Steel Grade for Oil & Gas: X52, X60 and A106 Gr.B are core grades for oil‑gas service. X52 with yield strength ≥360 MPa has excellent pressure resistance and weldability for medium‑high pressure oil‑gas pipelines. Low‑sulfur & low‑phosphorus composition effectively improves resistance to sulfide stress corrosion cracking, suitable for sour gas fields. ASTM A106 Gr.B features stable performance for general oil‑gas transmission systems.
LSAW Process Advantages: Single steel plate forming avoids longitudinal splicing defects. Double‑sided full‑penetration submerged‑arc welding ensures weld mechanical properties match base metal, with low defect rate and high structural stability. Cold expansion optimizes pipe roundness and relieves residual stress, greatly improving long‑term pressure‑bearing safety for buried oil‑gas pipelines.
Oil‑Gas‑Oriented Design: Strict dimensional tolerance control ensures reliable connection with oil‑gas valves, flanges and fittings. Smooth inner surface reduces fluid resistance and medium deposition. Optional multi‑layer anti‑corrosion coating adapts to soil, brine and crude oil corrosion in complex oil‑gas field environments.
Dimensional Tolerance (API 5L PSL2 Standard)
|
Item |
Tolerance |
|
Outer Diameter |
±1.0% of nominal OD |
|
Wall Thickness |
+15% / −12.5% of nominal WT |
|
Out‑of‑Roundness |
≤1.2% of outer diameter |
|
Straightness |
≤2.5 mm per meter |
|
Length |
+300 mm / −0 mm |
Mechanical Properties (API 5L X52 Reference)
|
Property |
Standard Requirement |
|
Minimum Yield Strength |
≥360 MPa (X52); ≥415 MPa (X60); ≥240 MPa (A106 Gr.B) |
|
Tensile Strength |
460 – 670 MPa (X52) |
|
Elongation |
≥21% |
|
Hydrostatic Test |
100% tested at 1.5× working pressure, no leakage |
|
Charpy Impact |
≥27 J at 0 °C (PSL2 mandatory) |
|
Flattening / Bend Test |
No cracks or weld separation |
Chemical Composition (Max. %)
|
Element |
C |
Mn |
P |
S |
Si |
|
X52 |
≤0.24 |
≤1.40 |
≤0.035 |
≤0.035 |
≤0.45 |
|
A106 Gr.B |
≤0.30 |
0.29‑1.06 |
≤0.035 |
≤0.035 |
0.10‑0.35 |
Residual elements: Cu ≤0.50%, Ni ≤0.30%, Cr ≤0.30%, Mo ≤0.15%. LF refining reduces non‑metallic inclusions to enhance anti‑corrosion performance for oil‑gas media.
Manufacturing Process
Raw Material Inspection: High‑quality carbon steel plates strictly inspected for chemical composition and mechanical properties.
Plate Forming: Precision cold forming to ensure uniform wall thickness and high roundness.
Double‑sided LSAW Welding: Full‑penetration welding + weld normalization; 100% online UT inspection for weld quality.
Cold Expansion: Improves circularity and relieves residual stress for long‑term pressure service.
NDT Inspection: 100% UT for weld seams; RT optional for high‑safety trunk‑line projects.
Hydrostatic Test: Full‑line pressure testing per API 5L standards.
Heat Treatment: Normalized standard; stress‑relieved optional for harsh oil‑gas environments.
Finishing: End beveling, anti‑rust treatment, marking, anti‑corrosion coating optional.
Product Advantages
High Pressure‑Bearing & Anti‑Corrosion: Optimized carbon steel composition + optional anti‑corrosion coating adapts to crude oil, natural gas and sour gas transmission.
Stable LSAW Weld Quality: Full‑penetration double‑sided welding, low defect rate, suitable for long‑distance buried oil‑gas pipelines.
Precise Dimensional Accuracy: Strict tolerance control ensures perfect connection with oil‑gas system components.
Wide‑Range Specification: Covers small‑medium to large‑diameter sizes for diversified oil‑gas project demands.
Full API Standard Compliance: Meets API 5L international standards, recognized by global oil‑gas operators.
Complete Quality Traceability: Heat number tracking, MTR reports and third‑party inspection (SGS/BV) available.
Cost‑Effective: LSAW process balances high performance and economic efficiency for large‑scale oil‑gas pipeline construction.
Main Applications
Long‑distance cross‑regional crude oil & natural gas trunk pipelines
On‑shore & offshore oil‑gas field gathering and transmission pipelines
Petrochemical refinery oil‑gas process pipelines
Natural gas storage and peak‑shaving station connecting pipelines
Urban gas transmission main pipelines
Sour gas field and high‑pressure oil‑gas transmission projects
Quality Inspection & Certification
Full dimensional inspection of OD, WT, length, straightness and roundness
Tensile, flattening, bend, hydrostatic and Charpy impact tests
100% UT weld inspection, RT optional for high‑safety projects
Heat‑batch chemical composition analysis
API‑certified Mill Test Report (MTR), third‑party inspection available
Packaging & Delivery
Packaging: Bundled with heavy‑duty steel strips, wrapped in waterproof woven cloth, end caps for protection
Marking: API 5L, LSAW, Carbon Steel Pipe For Oil And Gas, OD×WT, steel grade, heat number, batch number
Trade Terms: FOB, CIF, CFR, DAP available
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization: Custom wall thickness, anti‑corrosion coating, length and pipe‑end forms supported
Contact Us
For quotation, stock availability, delivery schedule and customized solutions of LSAW Carbon Steel Pipe For Oil And Gas, please contact our sales team. We provide API‑compliant LSAW carbon steel pipes and professional technical support for your global oil‑gas transmission and gathering pipeline projects.
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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