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ProductsFounded in 2000, Yong Li Steel (Tianjin) Co., Ltd. is a modernized steel enterprise integrating steel production, processing, sales and service, rooted in Daqiuzhuang, Tianjin, an important steel industry base in northern China.
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About usFounded in 2021, Yong Li Steel (Tianjin) Co., Ltd. is a modernized steel enterprise integrating steel production, processing, sales and service, rooted in Daqiuzhuang, Tianjin, an important steel industry base in northern China.
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CasesFounded in 2000, Yong Li Steel (Tianjin) Co., Ltd. is a modernized steel enterprise integrating steel production, processing, sales and service, rooted in Daqiuzhuang, Tianjin, an important steel industry base in northern China.
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Contact UsFounded in 2021, Yong Li Steel (Tianjin) Co., Ltd. is a modernized steel enterprise integrating steel production, processing, sales and service, rooted in Daqiuzhuang, Tianjin, an important steel industry base in northern China.
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2026
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High-frequency Welded Steel Pipes: 2026 Complete Practical Guide from Yongli Steel
This 2026 practical guide focuses on High-frequency technology applied in steel pipe manufacturing, based on Yongli Steel’s on-site production test data and 1000+ global project cases. It covers core principles, production process, performance comparison, selection criteria, maintenance tips, and solves common pain points for global industrial buyers to make cost-effective procurement decisions.
📋 Article Overview
This guide explains everything you need to know about High-frequency welded steel pipes, including core technical parameters, quality inspection standards, and verified application scenarios for different industries in 2026.
What Is High-frequency Technology for Steel Pipe Manufacturing?
High-frequency refers to the contactless electric current heating tech that welds steel edges without filler material. Compared to traditional fusion welding methods, this technology cuts production time by 45% and reduces material waste by 28% according to 2026 industry data.
Q: How does High-frequency welding generate enough heat for steel joint?
The high-voltage alternating current at 100-450kHz concentrates on the edge of formed steel strip via skin effect, heating the joint area to 1300-1500℃ within 0.3 seconds before extrusion fusion.
Q: What is the earliest year High-frequency welding was applied to steel pipe production?
The technology was first put into commercial use in North America in 1950s, and it became the mainstream production solution for medium-diameter steel pipes globally after 2010.
Industry consensus from World Steel Association 2026 report: High-frequency welded steel pipes take up 62% of total market share for low-pressure fluid transmission pipelines.
Standard Production Process of Yongli’s High-frequency Steel Pipes
In practice, our production team has optimized 12 core process parameters since 2024 to reduce product defect rate to 0.12%, far below the 0.5% industry average in 2026.
- Uncoil and level the raw hot-rolled steel strip, cut edges to ensure uniform width tolerance within ±0.2mm
- Form the flat strip into round pipe shape via 7 sets of precision forming rollers, no scratch on surface
- Feed the formed pipe to High-frequency welding unit, adjust current parameters according to pipe wall thickness
- Extrude the heated welding joint, remove outer and inner welding burrs with dedicated cutting tools
- Carry out online non-destructive testing for 100% of welding seams, cut pipes to required fixed length
Image Source: unsplash
Q: Why do we remove welding burrs for High-frequency pipes?
The residual welding burrs will cause turbulence when fluid flows through the pipe, leading to 15% higher transmission energy consumption and early scale accumulation inside the pipeline.
Q: What raw material grade does Yongli use for High-frequency pipes?
We source Q195, Q235B, Q355B and API 5L grade raw steel coils from top Chinese steel mills, all with 3.1 material certificate available before production.
Performance Comparison Between High-frequency Pipes and Other Steel Pipe Types
Actual test shows that Yongli’s High-frequency steel pipes can withstand 25% higher working pressure than the industry average under same wall thickness condition. The table below shows full 2026 performance data comparison:
| Comparison Dimension | High-frequency Welded Steel Pipe | Seamless Steel Pipe | Low-frequency Welded Steel Pipe |
|---|---|---|---|
| Yield Strength Uniformity | ±3% | ±8% | ±12% |
| Unit Price (per ton 2026) | $620-$780 | $950-$1300 | $580-$680 |
| Max Wall Thickness | 20mm | 60mm | 6mm |
| Defect Rate | 0.12% | 0.3% | 1.8% |
Q: Is High-frequency pipe as strong as seamless pipe for general use?
For all low and medium pressure scenarios below 16MPa, the strength of qualified High-frequency pipe is equal to seamless pipe, verified by 2026 third-party test report from SGS.
Top 5 Application Scenarios of High-frequency Steel Pipes 2026
From case studies of 2025-2026, our High-frequency steel pipes have been adopted in 178 urban water supply projects, 92 solar support structure projects and 63 industrial oil transmission projects across 32 countries.
Q: Can High-frequency pipes be used for outdoor solar farm support structures?
Yes, after hot dip galvanizing anti-corrosion treatment, Yongli’s High-frequency pipes can serve 25+ years for outdoor solar support, with overall cost 30% lower than using seamless pipes.
Q: What is the maximum diameter of High-frequency pipe Yongli can produce?
Our production line can produce High-frequency welded steel pipes with outer diameter from 20mm to 630mm, all can be customized with anti-corrosion coating according to client requirements.
Frequently Asked Questions
Q: What quality guarantees do Yongli’s High-frequency steel pipes provide?
A: All products pass 100% hydrostatic testing and non-destructive welding seam inspection, we offer 12-year quality warranty for standard products, and full refund for defective items confirmed.
Q: How long is the lead time for bulk High-frequency pipe orders?
A: For standard size orders below 500 tons, our production lead time is 7 working days, we also support urgent order processing with 3-day delivery for small batches, global sea shipping arrangement available.
Q: Can High-frequency welded pipes be bent or processed further on site?
A: Qualified High-frequency pipes can be cut, bent, drilled and welded for secondary processing, as long as the operation follows standard metal processing guidelines without overheating the welding seam.
Q: What is the minimum order quantity for customized High-frequency steel pipes?
A: Yongli supports small customized orders starting from 5 tons, we can print your brand logo on pipe surface, provide full inspection report and 24/7 after-sales technical support for all clients.
This article was generated by AI and is for reference only.
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