Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api spec 5l 273.1×7.8 x52 psl1 in China. Welcome to buy discount api spec 5l 273.1×7.8 x52 psl1 made in China here from our factory. Quality products and low price are available.
Product introduction
API Spec 5L 273.1×7.8 X52 PSL1 Line Pipe Product Details
Product Description
This product is high-quality carbon steel line pipe, manufactured strictly in accordance with API Spec 5L (46th Edition) standard. It adopts X52 (L360) steel grade and PSL1 product specification level, featuring stable mechanical properties, excellent weldability, reliable pressure-bearing capacity and cost-effectiveness. It is widely used in onshore oil and gas gathering and transmission, municipal water supply, industrial fluid transportation and general engineering pipeline projects, perfectly meeting the requirements of conventional working conditions.
Basic Specification & Standard
Executive Standard: API Spec 5L (46th Edition) (American Petroleum Institute Line Pipe Specification)
Steel Grade: X52 (L360) (Minimum Yield Strength: 360 MPa)
Product Specification Level: PSL1 (Basic quality level for general service)
Outer Diameter (OD): 273.1 mm (10.75 inch)
Wall Thickness (WT): 7.8 mm
Inner Diameter (ID): 257.5 mm
Theoretical Weight: 50.89 kg/m
Normal Length: 6m, 12m (standard)
Custom Length: 3m ~ 18m (available upon request)
Pipe End: Beveled end / Plain end (beveled end as default, suitable for on-site girth welding)
Dimensional Tolerance: - OD Tolerance: ±0.75% - WT Tolerance: +15% / -12.5%
Chemical Composition (Mass Fraction, %)
|
Element |
C (max) |
Mn (max) |
P (max) |
S (max) |
Si (max) |
Nb/V/Ti (max) |
|---|---|---|---|---|---|---|
|
X52 PSL1 |
0.28 |
1.40 |
0.030 |
0.030 |
0.45 |
0.04 |
Carbon Equivalent (Ceq): ≤ 0.42, which ensures excellent on-site welding performance and avoids welding cracks.
Mechanical Properties (PSL1 Standard Requirement)
|
Mechanical Property |
Minimum Required Value |
Typical Value |
|---|---|---|
|
Yield Strength (Rp0.2) |
360 MPa (52 ksi) |
380 – 430 MPa |
|
Tensile Strength (Rm) |
485 MPa |
500 – 560 MPa |
|
Elongation (A) |
≥ 20% (50mm gauge length) |
23 – 29% |
|
Hardness (HV10) |
≤ 240 |
195 – 215 HV |
Note: Charpy V-notch impact test is not mandatory for PSL1 grade; it can be customized according to customer requirements.
Manufacturing Process
Pipe Type: Seamless Steel Pipe (SMLS) / ERW Welded Pipe (High-Frequency Resistance Welding)
Forming Process: Seamless pipe - Rotary piercing + continuous rolling / cold drawing; ERW pipe - High-frequency welding + sizing
Heat Treatment: Hot Rolled / TMCP (Thermo-Mechanical Controlled Process) / Normalized (optional)
Process Features: Uniform wall thickness, low ovality, high dimensional accuracy, smooth inner and outer surfaces, ensuring stable performance and easy construction.
Product Advantages
Stable Strength: X52 medium-strength steel grade, fully meets the design requirements of medium-pressure pipeline systems.
Excellent Weldability: Low carbon equivalent design, compatible with on-site manual welding, automatic welding and semi-automatic welding, reducing construction difficulty.
Cost-Effective: PSL1 basic quality level, balances performance and cost, suitable for large-scale conventional pipeline projects.
Precise Specification: Strict dimensional control, consistent outer diameter and wall thickness, convenient for pipe connection and installation.
Strong Versatility: Adaptable to various anti-corrosion coatings, suitable for different working environments such as humidity, corrosion and normal temperature.
Application Fields
Oil & Gas Industry: Onshore oil and gas gathering pipelines, oilfield internal pipe networks, low-medium pressure transmission pipelines.
Municipal Engineering: Urban water supply main pipelines, water transmission and distribution pipelines, sewage treatment pipelines.
Chemical Industry: Transmission of neutral and weakly corrosive chemical media (such as water, oil, inert gas).
Industrial Pipelines: Circulating water pipelines in power plants and steel mills, process pipelines for general industrial production.
General Engineering: Steel structure columns, supports, piling pipes, and other engineering auxiliary pipelines.
Surface & Anti-Corrosion Treatment
Factory Surface: Black anti-rust paint / anti-rust oil (to prevent oxidation during storage and transportation).
Optional Anti-Corrosion Coatings: - External Coating: 2PE/3PE anti-corrosion coating, FBE (Fusion Bonded Epoxy) powder coating. - Internal Coating: Cement mortar lining, internal epoxy powder coating (to improve corrosion resistance and fluidity).
Inspection & Quality Assurance
Mandatory Inspection Items
Chemical composition analysis (per heat batch, with complete test records).
Tensile test (to verify yield strength, tensile strength and elongation).
100% Hydrostatic pressure test (no leakage, ensuring pressure-bearing capacity).
100% Dimensional and visual inspection (checking outer diameter, wall thickness, surface defects, pipe end flatness).
Optional Inspection Items
Non-Destructive Testing (NDT): Ultrasonic Testing (UT) / Eddy Current Testing (ET).
Mechanical Performance Tests: Flattening test, flaring test, bending test.
Charpy V-notch impact test (at room temperature or low temperature, optional).
Packing & Delivery
Packing: Bundled with steel strips, 2-5 pieces per bundle (single piece for large-caliber pipes); seaworthy packaging, suitable for ocean transportation.
Marking: Clearly printed on the pipe surface with API Spec 5L, steel grade (X52), specification (273.1×7.8), heat number, batch number and manufacturer information.
Delivery Condition: Hot rolled / normalized + anti-rust treatment, clean inner and outer surfaces.
Documentation: Provide complete MTC (Material Test Certificate) complying with API 5L PSL1 standard, supporting customs clearance and quality inspection.
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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