Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api spec 5l 406.4×10.31 x56 psl1 in China. Welcome to buy discount api spec 5l 406.4×10.31 x56 psl1 made in China here from our factory. Quality products and low price are available.
Product introduction
API Spec 5L 406.4×10.31 X56 PSL1 Line Pipe
Product Overview
API Spec 5L 406.4×10.31 X56 PSL1 Line Pipe is a mid‑strength carbon steel line pipe manufactured in accordance with API Spec 5L (46th Edition) standards. Featuring an outer diameter of 406.4 mm (16 in), wall thickness of 10.31 mm, steel grade X56, and specification level PSL1, this pipe delivers reliable mechanical properties and good weldability. It is a cost‑effective solution for general‑purpose oil, gas, and water transmission pipelines.
Basic Specifications
| Item | Details |
|---|---|
| Standard | API Spec 5L (46th Edition), ISO 3183 |
| Size | 406.4 mm (OD) × 10.31 mm (WT) |
| Steel Grade | X56 (L390) |
| Specification Level | PSL1 (Product Specification Level 1) |
| Manufacturing Process | Seamless (SMLS) / ERW / LSAW (optional) |
| Length | SRL: 5.8–7.2 m; DRL: 11.8–12.2 m; Custom lengths available |
| End Finish | Beveled End (BE, standard), Plain End (PE, optional) |
| Surface Treatment | Anti‑rust oil, black paint; Optional FBE / 3PE coating |
| Delivery Condition | Hot rolled (HR), Normalised (N), or TMCP |
Chemical Composition (PSL1, Max %)
| Element | C | Mn | P | S | Si |
|---|---|---|---|---|---|
| Limit | ≤ 0.28 | ≤ 1.40 | ≤ 0.030 | ≤ 0.030 | ≤ 0.45 |
Key Note: PSL1 allows wider composition tolerances; optimized for good weldability and cost efficiency.
Mechanical Properties (X56 PSL1)
| Property | Requirement |
|---|---|
| Yield Strength (Rp0.2) | ≥ 386 MPa (56,000 psi) |
| Tensile Strength (Rm) | ≥ 490 MPa (71,100 psi) |
| Elongation (A5) | ≥ 18% |
| Hardness | ≤ 241 HB |
| Hydrostatic Test | Standard pressure test (per API 5L) |
PSL1 Difference: No mandatory Charpy impact test (unlike PSL2).
Dimensional Tolerances (API 5L PSL1)
Outer Diameter: ± 0.0075D (max ± 3.2 mm) → ± 3.05 mm for 406.4 mm
Wall Thickness: +12.5% / −10% → +1.29 mm / −1.03 mm
Straightness: ≤ 3 mm/m
Ovality: ≤ 1.5% of OD
Key Features & Advantages
Cost‑Effective Performance: X56 strength at PSL1 quality, ideal for standard‑pressure pipelines.
Good Weldability: Balanced chemistry supports easy field and shop welding.
Versatile Production: Available in seamless, ERW, and LSAW to suit project needs.
Wide Application Range: Suitable for non‑corrosive, mild‑environment installations.
Standard Compliance: Fully meets API 5L PSL1 requirements with standard quality controls.
Typical Applications
General‑purpose oil & natural gas transmission pipelines
Water pipelines and municipal fluid transport
Low‑to‑medium pressure gathering lines
Non‑critical industrial process pipelines
Utility and infrastructure piping projects
Inspection & Testing (PSL1)
Chemical composition analysis
Tensile, flattening, and flaring tests
Hydrostatic pressure test
Ultrasonic (UT) or Eddy Current (ET) testing (standard)
Dimensional and visual inspection
Packaging & Marking
Packaging: Steel bundles with plastic end caps; seaworthy export packing.
Marking: Standard API stenciling - Standard, Grade, Size, PSL1, Heat No., Length, Manufacturer Logo.
Quality Assurance
Manufactured under ISO 9001 system
Material Test Certificate (MTC) provided per batch
Compliance with API Spec 5L PSL1 requirements
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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