Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of octg lsaw steel pipe api 5l in China. Welcome to buy discount octg lsaw steel pipe api 5l made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
OCTG LSAW Steel Pipe API 5L is a heavy‑duty longitudinal submerged‑arc welded steel pipe designed for oil country tubular goods, oil‑gas well casing, tubing, gathering lines, and wellhead transmission pipelines. Manufactured strictly in accordance with API 5L (PSL1 / PSL2), ISO 3183 and GB/T 9711 standards, it adopts high‑strength low‑alloy steel plates and double‑sided submerged‑arc welding (LSAW) technology. Featuring high yield strength, excellent collapse resistance, strong corrosion resistance, low‑temperature toughness and stable weld quality, this OCTG‑grade LSAW pipe is widely used in onshore and offshore oil‑gas well projects, shale gas development, oil‑gas gathering‑delivery systems and well site pressure piping. It provides reliable long‑term service under high‑pressure, high‑temperature and complex geological conditions for global oil and gas field development.
Basic Product Specifications
Product Name: OCTG LSAW Steel Pipe API 5L
Executive Standard: API 5L PSL1 / PSL2, ISO 3183, GB/T 9711
Manufacturing Process: LSAW (Longitudinal Submerged Arc Welding), plate forming, double‑sided SAW, cold expansion, weld normalization, stress relief
Steel Grade: API 5L X42, X52, X56, X60, X65 (OCTG special grades)
Outer Diameter (OD): 323.9 mm – 1422 mm
Wall Thickness (WT): 10 mm – 40 mm, custom thick‑wall up to 50 mm for deep‑well service
Standard Length: 12 m (main), 6 m optional, custom fixed lengths available
Delivery Condition: Normalized, Quenched & Tempered (Q&T) for high‑strength OCTG service
Surface Finish: Black bare steel with anti‑rust oil; 3PE / FBE anti‑corrosion coating optional
Pipe End: Beveled ends, plain ends, threaded ends (BTC/LC/BC) for OCTG connection
Application: Oil‑gas well casing & tubing, oil‑gas gathering pipelines, wellhead high‑pressure transmission lines, shale gas field pipelines, offshore oil‑gas platform connecting pipes, deep‑well injection pipelines
Grade & Process Explanation
OCTG‑Grade Steel Performance: API 5L X52‑X65 are core grades for OCTG LSAW pipes. X65 grade with minimum yield strength ≥448 MPa offers outstanding collapse resistance and tensile performance, suitable for deep‑well and high‑pressure oil‑gas fields. Strict control of sulfur and phosphorus improves sulfide stress corrosion cracking resistance, adapting to sour gas environments.
LSAW Process for OCTG: Single steel plate forming + double‑sided full‑penetration submerged‑arc welding ensures weld mechanical properties match base metal. Cold expansion optimizes roundness and wall‑thickness uniformity, critical for casing collapse resistance under underground geological pressure. Post‑weld heat treatment eliminates residual stress for long‑term down‑hole service safety.
OCTG Specialized Design: Optimized for well site high‑pressure, impact and corrosion conditions. Strict dimensional tolerance controls guarantee thread machining accuracy. Optional anti‑corrosion coating resists underground water, brine and crude oil corrosion, extending service life in harsh 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 X65 for OCTG Reference)
|
Property |
Standard Requirement |
|
Minimum Yield Strength |
≥448 MPa (X65); ≥360 MPa (X52) |
|
Tensile Strength |
531 – 758 MPa (X65) |
|
Elongation |
≥19% |
|
Hydrostatic Test |
100% tested, no leakage or deformation |
|
Charpy Impact |
≥27 J at 0 °C (PSL2 mandatory) |
|
Collapse Resistance |
Meet API OCTG casing collapse standard |
|
Flattening / Bend Test |
No cracks or weld separation |
Chemical Composition (Max. %, API 5L X65)
|
Element |
C |
Mn |
P |
S |
Si |
|
X65 |
≤0.26 |
≤1.50 |
≤0.030 |
≤0.030 |
≤0.45 |
Residual elements: Cu ≤0.50%, Ni ≤0.30%, Cr ≤0.30%, Mo ≤0.15%. Low‑sulfur low‑phosphorus formula improves anti‑H₂S corrosion performance for sour oil‑gas fields.
Manufacturing Process (LSAW for OCTG)
Raw Material Inspection: High‑strength OCTG‑grade steel plates strictly tested for chemistry and mechanical properties.
Plate Forming: Precision cold forming to ensure uniform wall thickness and high roundness for casing anti‑collapse performance.
Double‑sided LSAW Welding: Full‑penetration welding + weld normalization to match base‑metal performance; 100% UT inspection.
Cold Expansion: Improves circularity and relieves residual stress, enhancing underground pressure resistance.
Heat Treatment: Normalized or quenched‑tempered for high‑strength OCTG service.
NDT Inspection: 100% UT & RT for weld seams, meeting API 5L PSL2 requirements.
Hydrostatic Test: Full‑line pressure testing per API 5L & OCTG standards.
Finishing: Thread processing (BTC/LC), end beveling, anti‑rust treatment, marking, anti‑corrosion coating optional.
Product Advantages
OCTG‑Grade High‑Strength Performance: X52‑X65 high‑strength grades with excellent collapse, tensile and corrosion resistance for deep‑well and sour‑gas oil‑gas fields.
Reliable LSAW Weld Quality: Full‑penetration double‑sided welding, low defect rate, stable performance under long‑term down‑hole pressure.
High‑Precision Dimensional Control: Strict tolerance meets OCTG thread machining requirements for tight connection and sealing.
Strong Geological Adaptability: Resists underground soil pressure, brine corrosion and temperature variation.
Full API 5L Compliance: Strictly certified by API standards, compatible with global oil‑gas field OCTG system specifications.
Complete Traceability: Heat number tracking, MTR reports and third‑party inspection (SGS/BV) available.
Main Applications
Oil‑gas well casing, tubing and liner pipes
On‑shore & offshore oil‑gas gathering and transmission pipelines
Shale gas and unconventional natural gas development pipelines
Wellhead high‑pressure transmission and injection pipelines
Oil‑gas field water injection and gas injection pipelines
Deep‑well and high‑pressure sour‑gas field OCTG projects
Quality Inspection & Certification
Full dimensional inspection of OD, WT, length, straightness and roundness
Tensile, flattening, bend, hydrostatic, impact and collapse‑resistance tests
100% UT + RT weld inspection for PSL2 high‑safety level
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 cloth, steel end caps to protect threaded ends
Marking: API 5L, LSAW, OCTG grade, OD×WT, heat number, batch number, "OCTG Pipe"
Trade Terms: FOB, CIF, CFR, DAP available
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization: Custom wall thickness, thread type, anti‑corrosion coating and lengths supported
Contact Us
For quotation, stock availability, delivery schedule and customized solutions of OCTG LSAW Steel Pipe API 5L, please contact our sales team. We provide API‑certified OCTG‑grade LSAW pipes and professional technical support for global oil‑gas field, deep‑well and unconventional gas development 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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