Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api spec 5l 273.1×6.35 x56 psl1 in China. Welcome to buy discount api spec 5l 273.1×6.35 x56 psl1 made in China here from our factory. Quality products and low price are available.
Product introduction
API Spec 5L 273.1×6.35 X56 PSL1 Pipe Product Details
Product Overview
This product is API Spec 5L X56 PSL1 line pipe, manufactured in accordance with the latest API standard, featuring stable mechanical properties, excellent weldability and reliable pressure bearing performance. It is widely applied in onshore oil and gas gathering pipelines, fluid transportation and industrial pipeline projects.
Standard & Grade Parameters
Executive Standard: API Spec 5L (46th Edition)
Product Specification Level: PSL1
Steel Grade: X56 (L390)
Outer Diameter (OD): 273.1 mm (10.75 inch)
Wall Thickness (WT): 6.35 mm (0.250 inch)
Nominal Diameter: DN250
Normal Length: 6m / 12m; Custom length available from 3m to 18m
Pipe End: Plain end / Beveled end (beveled end by default)
Dimensional Tolerance:
OD tolerance: ±0.75%
WT tolerance: +15% / -12.5%
Theoretical Weight
Weight per meter: 41.77 kg/m
Weight per 12-meter pipe: 501.28 kg/pc
Chemical Composition (Mass Fraction, %)
| Element | C (max) | Mn (max) | P (max) | S (max) | Si (max) | Nb/V/Ti (max) |
|---|---|---|---|---|---|---|
| X56 PSL1 | 0.28 | 1.40 | 0.030 | 0.030 | 0.45 | 0.04 |
Carbon Equivalent (Ceq): ≤ 0.43
Good weldability for field girth welding and automatic welding
Mechanical Properties (PSL1 Requirement)
| Item | Minimum Required Value | Typical Value |
|---|---|---|
| Yield Strength | 386 MPa (56 ksi) | 410–460 MPa |
| Tensile Strength | 490 MPa | 520–580 MPa |
| Elongation | ≥ 20% (50mm gauge) | 22–28% |
| Hardness | HV10 ≤ 240 | 200–220 HV |
Charpy impact test is not mandatory for PSL1 grade, optional upon request.
Manufacturing Process
Pipe Type: Seamless Steel Pipe (SMLS) / ERW Welded Pipe
Forming Process: Piercing, continuous rolling, hot rolling
Heat Treatment: Hot rolled / Thermo-mechanical controlled process (TMCP) / Normalized as required
Stable dimensional precision, low ovality and uniform wall thickness.
Product Advantages
Medium-high strength steel grade, suitable for medium-pressure pipeline systems.
Low carbon equivalent, excellent welding performance for on-site construction.
PSL1 quality level, cost-effective and meets general transmission requirements.
Precise size control, convenient for pipe connection and construction installation.
Compatible with various external and internal anti-corrosion coatings.
Application Fields
Onshore oil & gas gathering and transmission pipelines
Municipal water supply and water transportation pipeline projects
Chemical medium transmission pipelines
Power plant and industrial circulating water pipelines
Structural support, piling and general engineering steel pipe applications
Surface & Anti-corrosion Treatment
Original surface: Black paint / rust-preventive oil
Optional anti-corrosion coatings:
External: 2PE / 3PE anti-corrosion coating, FBE epoxy powder coating
Internal: Cement mortar lining, internal epoxy coating
Inspection & Quality Assurance
Mandatory Inspection
Chemical composition analysis (heat certificate)
Tensile property test
100% hydrostatic pressure test, no leakage
Full dimensional and visual inspection
Optional Inspection
Ultrasonic testing (UT) / Eddy current testing (ET)
Flattening test, flaring test, bending test
Charpy V-notch impact test
Packing & Delivery
Packing: Bundled with steel strips, stable package for ocean transportation
Pipe Marking: Standard, steel grade, size, heat number, batch number clearly printed
Delivery Condition: Hot rolled with rust-proof coating
Documentation: Complete MTC (Material Test Certificate) in compliance with API 5L PSL1 standard
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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