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Product introduction
API 5L PSL1 ERW Steel Gas Pipe Product Detail Page
Product Description
API 5L PSL1 ERW Steel Gas Pipe is a high-quality, cost-effective pipeline product specifically designed for onshore natural gas transmission and distribution, manufactured in strict compliance with API Spec 5L (Latest Edition) international standard. Adopting High-Frequency Electric Resistance Welding (ERW) technology, it features stable mechanical properties, reliable weld quality, excellent pressure-bearing capacity and good corrosion resistance. As a PSL1 grade product, it meets the baseline technical requirements for conventional gas pipeline projects, balancing performance and cost, and is widely used in global onshore gas gathering lines, distribution networks, and municipal gas pipeline systems.
Basic Product Specifications
Product Name: API 5L PSL1 ERW Steel Gas Pipe
Executive Standard: API Spec 5L (Latest Edition, 46th/47th), ISO 3183
Quality Level: PSL1 (Product Specification Level 1)
Manufacturing Process: High-Frequency Electric Resistance Welding (ERW), Cold Roll Forming
Steel Grades Available: X42, X46, X52, X56 (Customizable per project requirements)
Common Sizes: Outer Diameter (OD): 48.3mm - 323.9mm; Wall Thickness (WT): 2.11mm - 12.7mm (Custom sizes available)
Delivery Condition: As-rolled, no post-heat treatment (standard for PSL1)
Standard Length: 6m / 12m (Single Random Length, Custom fixed length available)
Surface Finish: Black bare steel with temporary anti-rust oil (internal & external) to prevent corrosion during storage and transportation
Pipe Ends: Plain Ends (PE) / 30°/45° Beveled Ends (BE) on request (for on-site welding)
Application: Onshore natural gas transmission, municipal gas distribution, gas gathering lines
Key Grade & Process Explanation
API 5L PSL1: The standard product specification level for conventional gas pipeline service, with baseline chemical composition, mechanical property and inspection requirements. It is cost-effective, suitable for non-critical, onshore gas transmission scenarios where high-performance PSL2 is not required.
ERW (Electric Resistance Welding): High-efficiency welding process for steel pipes, using high-frequency current to achieve full-penetration longitudinal welding. The weld seam is uniform, compact and defect-free, with mechanical properties close to the base metal, ensuring reliable pressure-bearing capacity for gas transmission.
Gas Pipe Special Design: Optimized chemical composition (low sulfur, low phosphorus) to reduce corrosion and cracking risk; strict dimensional control to ensure seamless connection and leak-proof performance, meeting the safety requirements of gas transmission.
Dimensional Tolerance (API Spec 5L PSL1 Standard)
|
Item |
Standard Tolerance |
|
Outer Diameter (OD) |
±0.75% of nominal OD (minimum absolute tolerance ±0.5mm) |
|
Wall Thickness (WT) |
-12.5% of nominal thickness, no positive upper limit |
|
Out-of-Roundness |
≤1.5% of nominal outer diameter |
|
Straightness |
≤3.2 mm per meter length |
|
Standard Length |
+500 mm, -0 mm (Single Random Length) |
Mechanical Properties (Typical Values for X52 Grade, PSL1)
|
Mechanical Property |
Standard Requirement |
|
Minimum Yield Strength ($$R_{eH}$$) |
≥360 MPa (52 ksi) |
|
Tensile Strength ($$R_m$$) |
460 – 670 MPa (66.7 – 97.2 ksi) |
|
Elongation at Break (A) |
≥21% |
|
Flattening Test |
Qualified, no cracks or defects after testing |
|
Hydrostatic Test |
100% pressure test (pressure & holding time per API 5L), no leakage or deformation |
|
Weldability |
Excellent, suitable for SMAW, GMAW, SAW and other on-site welding processes |
Note: Mechanical properties can be adjusted according to different steel grades (X42/X46/X56) to meet project requirements.
Chemical Composition (Heat Analysis, Max. %, PSL1)
|
Element |
C (Carbon) |
Mn (Manganese) |
P (Phosphorus) |
S (Sulfur) |
Si (Silicon) |
|
Limit |
≤0.24 (X52) / ≤0.28 (X56) |
≤1.40 (X52) / ≤1.60 (X56) |
≤0.035 |
≤0.040 |
≤0.45 |
Residual elements: Cu ≤0.50%, Ni ≤0.30%, Cr ≤0.30%, Mo ≤0.15% (max. %)
Manufacturing Process (ERW)
Raw Material Selection: High-quality hot-rolled steel coils complying with API 5L PSL1 requirements, strictly inspected for chemical composition and mechanical properties to ensure suitability for gas transmission.
Cold Roll Forming: The steel coil is cold-formed into a circular shape with precise dimensional control, ensuring uniform wall thickness and roundness.
ERW Welding: High-frequency electric resistance welding is used to achieve full-penetration longitudinal welding. The weld seam is heated and normalized to eliminate internal stress and ensure weld quality.
Sizing & Straightening: Precision sizing to meet API 5L dimensional tolerances; straightening to ensure straightness ≤3.2 mm/m, facilitating on-site installation.
Non-Destructive Testing (NDT): 100% Ultrasonic Testing (UT) of weld seams to detect internal cracks, inclusions and other defects, ensuring weld integrity.
Hydrostatic Test: Each pipe undergoes a hydrostatic pressure test to verify pressure-bearing capacity and leak-proof performance, meeting API 5L safety standards for gas transmission.
Finishing: Internal and external anti-rust oil coating, end finishing (plain or beveled), and marking to complete the production process.
Product Advantages
API Standard Certified: Fully compliant with API Spec 5L PSL1, recognized by global gas engineering projects, with complete certification documents (MTR).
ERW Weld Quality: Full-penetration weld seam, 100% UT inspection, no internal defects, ensuring reliable pressure-bearing and leak-proof performance for gas transmission.
Cost-Effective: PSL1 grade balances performance and cost, ideal for conventional onshore gas pipeline projects, reducing overall project investment.
Gas-Specific Design: Low sulfur and phosphorus composition reduces corrosion and cracking risk, adapting to long-term gas transmission service.
Precise Dimensions: Strict dimensional tolerance control, ensuring seamless connection and high installation efficiency on-site.
Excellent Weldability: Easy for on-site welding and fabrication, adapting to various gas pipeline construction scenarios.
Full Traceability: Complete heat number and batch records, with Mill Test Report (MTR) provided for each order, ensuring quality traceability.
Main Applications
Specialized for onshore natural gas transmission and distribution, widely used in:
Onshore natural gas gathering lines and trunk pipelines.
Municipal gas distribution networks (residential, commercial, industrial).
Gas storage station and gas transmission station auxiliary pipelines.
Low to medium pressure gas transmission projects.
General industrial gas conveying pipelines (non-corrosive gas).
Quality Inspection & Certification
Dimensional Inspection: Full inspection of outer diameter, wall thickness, length, straightness and out-of-roundness to meet API 5L PSL1 tolerance standards.
Mechanical Property Testing: Tensile test, flattening test to verify yield strength, tensile strength and ductility (impact test optional for PSL1).
Hydrostatic Test: 100% pressure test at specified pressure and holding time, ensuring no leakage or permanent deformation.
Non-Destructive Testing (NDT): 100% Ultrasonic Testing (UT) for weld seams; PT/MT testing available on request.
Chemical Analysis: Heat analysis to confirm chemical composition meets API 5L PSL1 and gas pipe requirements.
Certification: Mill Test Report (MTR) provided for each order, with full heat number traceability; API Monogram available on request.
Packaging & Delivery
Packaging: Bundled with heavy-duty steel strips, wrapped with waterproof woven cloth to prevent rust and damage during transportation; end caps installed to protect pipe ends; custom packaging available for bulk orders.
Marking: Each pipe is clearly marked with API Spec 5L, PSL1, steel grade, size (OD×WT), heat number, batch number, length, manufacturing date and "Gas Pipe" identification.
Trade Terms: FOB, CIF, CFR, DAP, DDU all available, supporting various international trade cooperation methods.
Shipping Ports: Major Chinese coastal ports (Qingdao, Tianjin, Shanghai, Ningbo), ensuring efficient and convenient global transportation.
Customization: Accept customized steel grades, sizes, lengths, pipe ends (beveled), and anti-corrosion coating to meet specific gas pipeline project requirements.
Contact Us
For quotation, stock availability, delivery lead time, and customized services of API 5L PSL1 ERW Steel Gas Pipe, please contact our sales team. We provide professional gas pipeline solutions with API-certified quality, supporting your global natural gas transmission and distribution 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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