Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of hot rolled hfw welded pipe od76~660mm low carbon steel for pipeline in China. Welcome to buy discount hot rolled hfw welded pipe od76~660mm low carbon steel for pipeline made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
Hot Rolled HFW Welded Pipe OD76~660mm Low Carbon Steel For Pipeline is medium & large diameter high-frequency straight welded pipeline pipe, manufactured from hot rolled low carbon steel coils as raw material, specially developed for municipal water supply, city gas, industrial circulating fluid and medium-low pressure oil & gas gathering transmission pipelines. The outer diameter fully covers 76mm to 660mm mainstream pipeline calibers, complying with GB/T 3091, ASTM A53, API 5L, EN10217 global fluid pipeline standards.
Adopting hot rolled low carbon strip with stable uniform metallographic structure, the pipe is formed and welded via advanced HFW high-frequency induction welding technology without filler metal. Weld realizes full metallurgical fusion with base metal, matched with online internal & external flash removal and weld normalization heat treatment to eliminate welding residual stress. All finished pipes pass 100% full-length hydrostatic tightness test and weld eddy current / ultrasonic NDT inspection, with smooth burr-free inner wall, low fluid flow resistance and reliable anti-leakage performance. Optional black anti-rust oil, hot dip galvanized, 3PE/FBE external anti-corrosion and internal epoxy lining can adapt to buried, overhead, coastal saline soil and seasonal temperature alternating environments. With stable batch quality and high cost performance, this hot rolled HFW low carbon pipe is the universal preferred pipeline for global civil and industrial fluid transportation projects.
1. Basic Product Specifications
Product Name: Hot Rolled HFW Welded Pipe OD76~660mm Low Carbon Steel For Pipeline
Executive Standards: GB/T 3091, ASTM A53 Type E, API Spec 5L PSL1, EN10217
Raw Material: Hot rolled low carbon steel coils
Outer Diameter Range: 76mm ~ 660mm full standard pipeline sizes
Conventional Wall Thickness: 2.75mm – 20mm, STD / SCH40 / SCH80 customizable wall thickness
Low Carbon Steel Grades: Q235B, ASTM A53 Gr.B, L245, S235JR
Production Process: Hot rolled strip slitting → multi-roll forming → HFW high-frequency induction welding → online internal & external burr removal → weld stress relief heat treatment → sizing & straightening
Standard Length: 6m / 9m / 12m; custom fixed length within 12m supported
Applicable Media: Tap water, natural gas, sewage, industrial circulating water, crude oil & refined oil, low-corrosive liquid & gas
Design Working Pressure: ≤2.5MPa for medium-low pressure pipeline networks
Pipe End Options: Plain ends, 30°~37.5° beveled welding ends, plastic anti-collision end caps
Surface Treatment: Black anti-rust oil, hot dip galvanized, 2PE/3PE, FBE, internal food-grade epoxy lining
Core Features: Hot rolled low carbon raw material, full 76–660mm caliber series, HFW narrow heat-affected zone weld, smooth inner bore, zero leakage, multiple anti-corrosion customization, factory mass supply, low engineering comprehensive cost
2. Core Product Advantages
2.1 Hot Rolled Low Carbon Steel, Stable Uniform Base Material
Adopt hot rolled low carbon steel coil with fully homogenized microstructure after high-temperature rolling, strictly controlled low carbon, sulfur and phosphorus impurities. The material owns balanced plasticity, toughness and weldability, no internal lamination or uneven hardness defects existing in cold rolled strips. It maintains stable mechanical performance under long-term alternating fluid pressure and seasonal temperature change, perfectly fit long-distance buried pipeline service conditions.
2.2 Complete 76–660mm Caliber Series, One-Stop Pipeline Sourcing
Covers all mainstream medium and large diameter pipeline specifications for water, gas and oil transmission, fully compatible with standard elbows, tees, flanges and valves of GB, ASTM, API and EN standards. Customers can complete all caliber procurement from single factory, simplify purchasing management, cut multi-supplier logistics and communication costs, accelerate project construction schedule.
2.3 Advanced HFW Induction Welding, High Integrity Weld Without Leakage
HFW high-frequency induction heating concentrates heat only on strip edges with narrow heat-affected zone, avoiding coarse grain growth. Weld is solid-state extruded fusion without pores, slag inclusions and microcracks. Online weld normalization eliminates residual stress to prevent delayed cracking; 100% full-length hydrostatic test and weld NDT inspection thoroughly eliminate fluid leakage hidden danger of trunk pipelines.
2.4 Smooth Inner Wall, Reduce Fluid Transmission Loss
Online mechanical scarving completely removes internal welding flash to form flat smooth inner surface. It effectively lowers friction loss of water, gas and oil medium, prevents wax, sediment and impurity deposition inside pipes, stabilizes pipeline flow and pressure, and reduces long-term energy consumption of water pumps and gas compressors.
2.5 Diversified Anti-Corrosion Solutions For All Laying Environments
Black anti-rust oil: For short-term storage and indoor overhead pipelines
Hot dip galvanized: For urban overhead gas & water pipelines with atmospheric anti-rust demand
3PE coating: For general buried pipelines, strong soil abrasion and electrochemical corrosion resistance
FBE + internal epoxy lining: For coastal saline soil and clean tap water / crude oil transmission projects, extend service life up to 40–50 years
2.6 Mass Production High Cost Performance
Hot rolled coil raw material matches high-speed automatic HFW production line, large batch output greatly reduces unit cost compared with seamless pipe. Stable yield rate, low defective rate and minimal later maintenance expense, ideal bulk procurement choice for municipal reconstruction, oil field gathering and industrial fluid pipeline EPC projects.
3. Dimensional Tolerance Standard
|
Inspection Item |
Standard Tolerance |
|
Outer Diameter (76mm–168mm) |
±0.8% nominal OD |
|
Outer Diameter (168mm–660mm) |
±1.0% nominal OD |
|
Wall Thickness |
+12% / −10% nominal thickness |
|
Pipe Straightness |
≤1.5mm per meter |
|
Out-of-Roundness |
≤1.0% of outer diameter |
|
Cutting Length |
+100mm / −0mm |
4. Mechanical & Chemical Properties (Low Carbon Steel)
4.1 Mechanical Properties
|
Steel Grade |
Min. Yield Strength |
Tensile Strength |
Min. Elongation |
Mandatory Factory Test |
|
Q235B |
≥235MPa |
370–500MPa |
≥26% |
100% hydrostatic test, weld UT inspection, flattening & bend test |
|
ASTM A53 Gr.B |
≥240MPa |
≥415MPa |
≥20% |
100% hydrostatic test, weld eddy current inspection, reverse bend test |
|
L245 |
≥245MPa |
415–655MPa |
≥20% |
100% hydrostatic test, full weld NDT |
|
S235JR |
≥235MPa |
360–510MPa |
≥26% |
Flattening, cold bending and weld tightness test |
4.2 Maximum Allowable Chemical Composition (Mass %)
|
Grade |
C Max |
Mn Max |
P Max |
S Max |
|
Q235B / S235JR |
0.22 |
1.40 |
0.045 |
0.045 |
|
ASTM A53 Gr.B |
0.30 |
1.20 |
0.050 |
0.045 |
|
L245 |
0.26 |
1.20 |
0.030 |
0.030 |
Note: All pipes pass flattening test and cold bending test; customized -20℃ low-temperature Charpy impact test report available for cold region pipeline projects.
5. Manufacturing Process
Hot Rolled Raw Material Inspection: Test chemical composition and mechanical performance of hot rolled low carbon steel coils, eliminate unqualified raw materials with segregation or uneven texture.
Slitting & Edge Levelling: Precision slitting to matched width, grind strip edges to remove oxide scale for consistent welding gap.
Multi-Roll Continuous Precision Forming: Gradual rolling molding to ensure uniform roundness and consistent wall thickness of pipe blank.
HFW High-Frequency Induction Welding: Closed-loop automatic parameter control, concentrated edge heating to realize full penetration solid-state weld.
Internal & External Weld Burr Removal: Online mechanical scarving to clear welding flash for smooth inner pipe wall.
Weld Normalization Stress Relief Heat Treatment: Eliminate welding residual stress, improve weld toughness and anti-cracking performance.
Sizing & Straightening: Precision sizing mill calibrate outer diameter to standard tolerance, straightener correct pipe linearity.
Fixed-Length Cutting: Neat burr-free cutting according to customer customized length.
Full Pipeline Standard Inspection: 100% hydrostatic tightness test, weld non-destructive flaw detection and full dimensional reinspection.
Marking & Anti-Corrosion Processing: Laser permanent marking of standard, steel grade, dimension and batch number; customized anti-rust and anti-corrosion coating construction.
Export Standard Packaging: Waterproof PE film wrapping, heavy-duty steel strip bundling, plastic anti-collision end caps for long-distance sea & land transportation.
6. Main Application Scope
Municipal Engineering: Urban tap water trunk & branch pipelines, city natural gas distribution network, rainwater & sewage delivery pipelines
Oil & Gas Industry: Onshore oil field gathering pipelines, small refinery medium-pressure crude oil & refined oil conveying pipelines
Industrial Supporting: Factory circulating water, low-pressure production gas, chemical low-corrosive medium transmission pipelines
Water Conservancy Projects: Rural centralized water supply renovation, reservoir diversion and irrigation supporting pipelines
Global EPC Pipeline Projects: Overseas fluid transmission projects complying with GB, ASTM, API and EN international standards
7. Quality Inspection & Certification
Fully compliant with GB/T 3091, ASTM A53, API 5L, EN10217 international fluid pipeline standards
ISO 9001 quality management system certified full HFW production line
100% full-length hydrostatic tightness test and full weld non-destructive flaw detection
Complete Mill Test Report (MTR) and factory qualification certificates supplied with each shipment
Support SGS, BV, TUV third-party on-site sampling inspection and international pipeline project acceptance
Full batch traceability record from hot rolled steel coil to finished pipe delivery
8. Packaging & Delivery
Packaging: Bare black pipes coated with anti-rust oil, wrapped with thick waterproof PE film, bundled with high-strength steel strips, plastic protective caps installed at both pipe ends; galvanized/3PE anti-corrosion pipes with reinforced wear-resistant packaging.
Product Marking: Laser permanent marking including product standard, low carbon steel grade, OD×WT, batch number and production date.
Trade Terms: FOB, CIF, CFR, DAP global sea and land delivery available
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization Service: Custom fixed length, full set galvanized / 3PE/FBE/epoxy anti-corrosion coating, special beveled pipe end processing
Delivery Cycle: Conventional stock specifications 3–7 working days; customized anti-corrosion treated pipes 7–15 working days
9. Why Choose Our Hot Rolled HFW Low Carbon Pipeline Pipe
Adopt qualified hot rolled low carbon steel coil raw material, uniform internal texture, stable long-term pipeline service performance
Complete 76–660mm full caliber series, one-stop bulk procurement solution for all medium-low pressure fluid pipeline projects
Advanced HFW induction welding with narrow heat-affected zone, defect-free weld and reliable anti-leakage performance
Multiple low carbon steel grade options, matched diversified anti-corrosion processes to adapt to all construction environments
Strict full-process QC inspection, complete official test documents to pass global third-party project acceptance
Factory direct mass supply without intermediate markup, competitive bulk price for large municipal and energy pipeline EPC 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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