Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api spec 5l psl1 erw hfw pipe 76~660mm natural gas branch line tube in China. Welcome to buy discount api spec 5l psl1 erw hfw pipe 76~660mm natural gas branch line tube made in China here from our factory. Quality products and low price are available.
Product introduction
1. Product Overview
Product Name
API Spec 5L PSL1 ERW HFW Pipe 76~660mm Natural Gas Branch Line Tube
Core Standard & Product Positioning
This series of ERW / HFW longitudinal welded line pipe is manufactured strictly in accordance with API Spec 5L (45th Edition) PSL1, the universal global standard for petroleum and natural gas transportation pipelines. Adopting mature high-frequency electric resistance welding technology, outer diameter covers 76mm to 660mm. It is specially developed for onshore natural gas branch lines, urban gas distribution networks, gas gathering pipelines and medium-pressure gas transmission auxiliary pipelines.
PSL1 is the standard product specification level for general gas distribution projects, meeting basic mechanical, welding and pressure containment requirements for non-sour conventional natural gas service. Compared with PSL2, it delivers excellent cost performance for medium and low-pressure gas branch networks without excessive strict supplementary testing requirements. Our HFW/ERW line pipe features stable weld integrity, precise dimensional control and reliable air tightness, widely adopted by gas operators, energy contractors and pipeline engineering companies worldwide.
Core Advantages for Natural Gas Branch Line
Different from general structural or fluid pipes, this API 5L PSL1 line pipe is designed for continuous natural gas transportation. Solid-state HFW/ERW welding eliminates welding filler metal; narrow heat affected zone ensures consistent metallurgical property between weld and base material. Smooth inner wall reduces gas transmission resistance. The whole production process complies with API 5L mandatory inspection rules, effectively preventing gas leakage risk. It balances safety, delivery cycle and project investment, becoming the preferred solution for medium & low-pressure natural gas branch distribution networks.
2. Key Technical Specifications
2.1 Dimension Range
Outer Diameter: 76 mm ~ 660 mm
Wall Thickness: 3.0 mm ~ 22 mm (custom thick wall for higher design pressure gas routes)
Standard Length: 6m / 12m; random length 5.8–11.8m, support custom fixed-length cutting, pipe end bevel for field girth welding
Tolerance: OD, wall thickness, straightness and ovality controlled per API Spec 5L PSL1 requirements
2.2 Available API 5L Steel Grades (PSL1)
|
Grade |
Minimum Yield Strength |
Minimum Tensile Strength |
Typical Gas Application |
|
Grade B (L245) |
≥245 MPa |
≥415 MPa |
Urban residential gas branch, low-pressure distribution network |
|
X42 (L290) |
≥290 MPa |
≥415 MPa |
Conventional medium-pressure natural gas branch pipeline |
|
X46 (L320) |
≥320 MPa |
≥435 MPa |
Medium-pressure gas trunk branch, suburban gas distribution |
|
X52 (L360) |
≥360 MPa |
≥460 MPa |
Heavy-flow natural gas gathering line, industrial gas supply branch |
2.3 Gas Transportation Performance Parameters
Working Medium: Conventional dry natural gas, non-sour gas (H₂S-free service)
Operating Pressure: Suitable for low & medium pressure natural gas distribution systems
Weld Property: HFW solid-state forge welding, no porosity, slag inclusion risk; weld efficiency ≥90% base metal
Air Tightness: Every pipe undergoes hydrostatic test to prevent gas leakage
Climate Adaptability: -20℃ ~ +60℃, applicable for inland and coastal onshore buried gas pipelines
Processing Performance: Excellent field weldability, compatible with standard pipeline girth welding procedures
3. ERW & HFW Manufacturing Process for API 5L Line Pipe
Raw Material Inspection: API 5L certified hot rolled coil, chemical composition & mechanical property batch verification
Continuous Precision Forming: Multi-pass roller forming to guarantee uniform wall thickness and regular circularity
Dual Welding Option: ERW for medium-small diameter; HFW high-frequency induction welding for larger diameter gas line pipe
Internal & External Weld Burr Removal: Smooth inner surface to lower gas flow resistance and avoid turbulence
Optional Weld Zone Heat Treatment: Relieve welding residual stress upon customer request
Online Sizing & Straightening: Strict straightness control for long-distance pipeline laying
Fixed-length Cutting & Pipe End Finishing: Deburr, customized bevel for field pipeline connection
NDT & Hydrostatic Test: Mandatory inspection per API 5L PSL1 specification
Marking & Surface Treatment, final sorting and warehousing
4. API Spec 5L PSL1 Mandatory Quality Inspection
Raw material chemical analysis and tensile test per heat batch
100% Online Ultrasonic Testing for full weld seam to detect internal welding defects
Individual hydrostatic pressure test on each pipe as required by API 5L
Transverse weld bend test for production lot verification
Full dimensional & visual inspection of outer surface, pipe ends
Permanent pipe marking compliant with API 5L marking regulation
Issue official Mill Test Certificate (MTC) in accordance with API 5L
Accept third-party witness inspection: SGS, BV, TÜV for energy project acceptance
Note: PSL1 does not require mandatory Charpy impact testing by default; impact test can be added as supplementary customer requirement.
5. Core Product Advantages for Natural Gas Branch Line Projects
Fully Compliant with API Spec 5L PSL1 Standard All production, testing and marking follow API 5L specification, complete documentation to meet international gas pipeline project acceptance standards.
Reliable HFW/ERW Weld Integrity Filler-free high-frequency welding with stable metallurgical bonding; low leakage risk for continuous natural gas transportation.
Optimized for Gas Distribution Branch Network 76–660mm full OD range covers most branch, service and gathering line sizes; one-stop procurement for gas network contractors.
Excellent Cost Efficiency Compared with seamless line pipe, ERW/HFW welded pipe offers shorter lead time and competitive price, ideal for large-scale urban gas branch projects.
Customizable Anti-Corrosion Scheme Support bare black finish, black anti-rust varnish, FBE, 2PE / 3PE external anti-corrosion for underground buried gas pipelines.
Complete Export Supporting Service Standardized API marking, formal MTC, flexible packaging, suitable for cross-border energy infrastructure tender projects.
6. Main Application Scenarios
Urban natural gas distribution branch pipelines
Onshore natural gas gathering lines connecting wellheads to processing stations
Industrial park medium-pressure gas supply pipelines
Municipal gas network reconstruction & expansion projects
Suburban and township low/medium-pressure natural gas transmission lines
Auxiliary connecting pipelines for gas pressure regulating stations
7. Surface Treatment & Packaging
Surface Treatment Options
Standard: Bare pipe + black anti-rust varnish (temporary protection for transit)
Buried Pipeline Anti-Corrosion: Fusion Bonded Epoxy (FBE), 2PE / 3PE external coating
Shot blasting available as pretreatment for customer on-site coating work
Packaging Standard
Small & medium diameter pipes: Steel strip bundling + plastic end caps to prevent dirt entering pipe bore
Large diameter pipes: Separated by wooden supports (ISPM15 available for export)
Waterproof tarpaulin wrapping for sea transportation
Permanent marking on pipe body: Standard, grade, OD×WT, heat number, batch No., manufacturer name
8. Manufacturer Strength
Professional HFW/ERW production lines dedicated to API 5L line pipe, OD range 76–660mm
Mature production system for API Spec 5L PSL1 welded line pipe, long-term supply for global gas distribution projects
Independent testing laboratory equipped with UT equipment, hydrostatic test bench and mechanical test machines
Strict traceability system for each production batch, full document support for energy engineering tender
Capable of bulk continuous supply, flexible to handle trial orders and long-term framework contracts
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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