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2026-01-29Product News
Square tube and round tube cross-sectional comparison
In engineering design, comparing round tubes and square tubes with the same cross-sectional area is essentially an evaluation of structural efficiency under equal material usage. Since material strength remains constant, the differences in mechanical performance arise purely from cross-sectional geometry. These differences are well-established, quantitatively verifiable, and carry strong engineering guidance value for structural selection.
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2026-01-28Product News
What is the service life of galvanized steel coils?
The service life of galvanized steel coils typically ranges from 10 to 50 years, depending on the zinc coating thickness, exposure environment, and application conditions. Here's an overview of the service life of galvanized steel coils.
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2026-01-27Product News
What are steel coils used for?
Steel coils are continuous, flat steel products produced by hot rolling or cold rolling steel slabs into long, thin sheets and winding them into coils. They are one of the most widely used steel forms in global manufacturing, construction, energy, automotive, and appliance industries due to their versatility, consistency, and cost efficiency. This article will briefly introduce what are steel coils used for.
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2026-01-21Product News
Seamless pipe thickness chart
The thickness of a seamless steel pipe is a critical engineering parameter that directly influences pressure resistance, structural strength, weight, cost, and application suitability. In demanding industries such as oil and gas, boilers, power generation, chemicals, and machinery manufacturing, seamless pipes are widely preferred due to their weld-free structure, high density, and stable performance. Among all dimensional parameters, wall thickness plays a decisive role in both design calculations and procurement decisions.
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2026-01-20Product News
How to prevent backside oxidation during stainless steel pipe welding?
Backside oxidation is a common and critical issue during stainless steel pipe welding, particularly in petrochemical, chemical, and power plant construction. Oxidation on the inner surface of the weld and heat-affected zone (HAZ) can significantly reduce corrosion resistance and compromise long-term service performance. Because the inner wall of stainless steel pipes cannot be pickled and passivated after welding, preventing backside oxidation during the welding process itself becomes essential. This article analyzes the main causes of backside oxidation and introduces effective welding process improvements to achieve clean, silver-white weld roots.
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2026-01-19Product News
2026 purchasing guide for steel pipe piles by United Steel Industry
In large-scale infrastructure and marine engineering projects, steel pipe piles are not simply structural components—they are high-risk, high-value procurement items. In 2026, buyers are under increasing pressure to balance technical compliance, delivery reliability, and total lifecycle cost. At United Steel Industry, we work closely with global EPC contractors, infrastructure developers, and marine engineering firms, supporting steel pipe pile projects from technical review to final delivery. This buyer-focused guide outlines how procurement teams can make informed, risk-controlled purchasing decisions.
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2026-01-15Product News
Frequently asked questions about steel pipe piles
Steel pipe piles are critical structural elements used in foundations for offshore platforms, jetties, wind turbines, and other civil and industrial projects. Understanding their types, grades, and installation methods is essential for engineers, contractors, and project managers. This guide answers common questions about steel pipe piles, including friction piles, end-bearing piles, open-end and closed-end designs, and potential installation issues.
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2026-01-14Product News
Steel pipe pile sizes and standards
A steel pipe pile is a deep foundation element made from circular steel pipes or steel tubes, widely used in civil engineering, infrastructure, and marine construction. Due to their high structural strength, uniform material quality, and excellent seismic performance, steel pipe piles are commonly applied in projects requiring reliable load-bearing foundations.
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2026-01-13Product News
How to inspect galvanized steel pipe weld?
Galvanized steel pipes combine the durability of welded steel pipes (e.g., ERW pipes) with corrosion resistance from hot-dip or electro-galvanizing. Proper weld inspection ensures mechanical integrity, safety, and long-term service.
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2026-01-07Product News
Why are S31609 stainless steel pipes commonly used in industrial projects?
In industrial environments where corrosion resistance, high-temperature strength, and long-term reliability are critical, material selection directly affects system safety and service life. S31609 stainless steel pipes (316H) are widely adopted in chemical, marine, and energy-related projects due to their optimized chemical composition, stable mechanical performance, and mature manufacturing standards.
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2026-01-05Product News
How to measure the length of straight seam steel pipes?
Accurate length measurement of straight seam steel pipes is essential during manufacturing and quality control. Due to large pipe sizes and complex production environments, various measurement methods are applied in practice, each with its own working principle, accuracy level, and limitations.
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2026-01-04Product News
ASTM A53 Sch 80 seamless pipe
ASTM A53 Schedule 80 seamless pipe is a carbon steel pipe produced through a seamless manufacturing process and manufactured in accordance with the ASTM A53 specification. With its thick wall design (Sch 80), this pipe offers enhanced mechanical strength and pressure-bearing capability, making it suitable for medium- to high-pressure industrial applications, though it is not intended for extreme high-temperature service.
