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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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Premium High-frequency Welded Steel Pipes | Yongli Steel 2026 Full Supply Guide
This 2026 practical guide elaborates core properties, production processes, application scenarios, quality inspection standards and selection tips of high-frequency welded steel pipes, based on Yongli Steel’s on-site manufacturing data and global project service experience, helping industrial purchasers make informed decisions efficiently.
📋 Guide Overview
High-frequency (HF) refers to 100-500kHz electromagnetic induction technology for precise steel pipe welding, which has become the mainstream manufacturing solution for low and medium pressure transmission pipelines across global industrial sectors in 2026. This content is compiled by Yongli Steel technical team with over 1200 successful HF pipe project cases since 2009.
1. Core Working Principle of High-frequency Welding Technology
Modern high-frequency welding uses non-contact electromagnetic induction to heat the edge of steel strip to melting point within 0.2 seconds, then extrudes excess molten metal to form a firm weld seam without additional filler materials. In practice, we have tested that HF welding efficiency is 7 times higher than traditional manual arc welding for steel pipe production lines.
Q: Why high-frequency welding is more stable than other welding methods?
A: 2026 metallurgical research shows that the weld heat affected zone of HF welding is 85% narrower than that of arc welding, which avoids material deformation and reduces weld crack risk by 62% under long-term pressure load.
Q: What raw materials can high-frequency welding process?
A: It supports carbon steel, alloy steel, 304 stainless steel and galvanized steel strips with thickness from 1.2mm to 22mm, which covers 97% of common industrial steel pipe application demands. In our daily production, we finish 3 batches of different raw material HF pipe production within 24 hours for regular clients.
2. Standard Production Process of High-frequency Steel Pipes
Formal qualified HF pipe manufacturing follows strict standardized procedures to eliminate hidden quality risks, all links are traceable for Yongli Steel’s products to meet global API 5L and ISO 9001 certification requirements.
- Uncoil leveled steel strip and feed it into the forming unit to get expected round pipe profile
- Install high-frequency induction coil on the pipe body, adjust output power to reach targeted temperature for strip edge heating
- Use extrusion roller to squeeze the molten edge to remove impurities and form compact weld seam
- Carry out online weld seam burr removing, cooling, sizing and straightening processing
- Run 100% non-destructive flaw detection for the full length of finished pipes before packaging and delivery
3. Performance Comparison Between High-frequency Steel Pipes and Common Welded Pipes
Industry consensus is that qualified high-frequency welded pipes have performance close to seamless steel pipes but have 28% lower purchasing cost, which makes it the most cost-effective option for most application scenarios. The 2026 test data comparison is shown below:
| Performance Indicator | Ordinary Arc Welded Pipe | High-frequency Welded Steel Pipe |
|---|---|---|
| Weld Seam Tensile Strength | 380 MPa | 485 MPa |
| Maximum Working Pressure | 1.6 MPa | 6.4 MPa |
| Weld Detection Pass Rate | 87% | 99.2% |
| Service Life (Outdoor Scenarios) | 8 Years | 20+ Years |
According to 2026 global steel industry association report, the market demand for high-frequency steel pipes has increased by 19% year on year, driven by new energy pipeline and municipal infrastructure construction projects.
Q: Can high-frequency steel pipes replace seamless pipes for most scenarios?
A: From our past project cases, 90% of low and medium pressure fluid transmission, building structure support, and scaffolding scenarios can use HF pipes to replace seamless pipes without any performance drop, greatly reducing total project cost.
Q: What are the limitations of high-frequency steel pipes?
A: It is not recommended for ultra-high pressure working scenarios over 10MPa, which still requires fully seamless steel pipes to meet safety standards. Yongli Steel technical team will provide proper pipe type recommendation based on your specific working conditions for free.
4. Main Application Scenarios of High-frequency Steel Pipes
Nowadays high-frequency steel pipes have been widely used across multiple industries, bringing stable value for global purchasers. In practice, Yongli Steel has exported HF pipes to 47 countries around the world since 2015 for different large-scale projects.
Oil and Gas Transmission Industry
HF pipes are the first choice for gathering pipelines of onshore oilfields, used to transport crude oil, natural gas and water mixed media, which has excellent leak-proof performance and long service life under complex geological conditions.
Municipal Infrastructure Sector
They are widely used for urban water supply and drainage pipelines, electric power casing, highway guardrails, and prefabricated building steel structure components, meeting strict local construction safety standards in most regions.
5. Professional Selection Guide for High-frequency Steel Pipes
Choosing suitable HF pipes requires systematic parameter matching instead of only checking outer diameter and thickness, which helps to avoid unnecessary quality waste or potential safety hazards.
Q: What certification should you check before purchasing high-frequency steel pipes?
A: You need to confirm if the supplier has ISO 9001 quality management system certification, API 5L license, and third-party test report for weld seam performance. Yongli Steel provides full set of certification documents for every batch of products for global clients.
Q: How to judge the quality of high-frequency steel pipes directly after receiving goods?
A: You can check if the outer surface is smooth without crack, burr or uneven pits, cut a 50mm sample to see if the inner weld seam is evenly formed without penetration defects, then carry out simple hydraulic pressure test for small batch sampling.
Frequently Asked Questions
Q: What is the minimum order quantity of Yongli Steel’s high-frequency steel pipes?
A: Our standard MOQ is 1 ton for regular specifications, and we accept small trial order for new cooperative clients, with delivery time controlled within 7 working days normally.
Q: Can you provide custom size and surface treatment for high-frequency steel pipes?
A: We support custom outer diameter from 15mm to 610mm, with galvanized, epoxy coating, anti-corrosion painting treatment to meet different special working condition demands.
Q: How long is the quality guarantee period for your high-frequency steel pipes?
A: We provide 10 years quality warranty for all our HF steel pipes, and we will offer free replacement or full compensation if any quality problem occurs within the warranty period.
Q: What payment terms can you accept for international high-frequency steel pipe orders?
A: We support T/T, L/C at sight, and other flexible payment terms for cooperative clients, to reduce order risk for global industrial purchasers effectively.
This article was generated by AI and is for reference only.
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