Sihe Steel
Sihe Steel
High-performance ferritic alloy configurations engineered to comply with South Korean KS D 3536 / KS D 3576 standards and rigorous industrial testing criteria.
Tailored for architectural panel supports, exhaust system components, and structural frames in South Korea.
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High-precision ASTM A268/A268M standard compliant piping designed for optimized heat resistance in heat exchangers.
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Heavy-duty welded pipeline designs suited for refinery processes and harsh industrial fluid transmissions.
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DIN 17455 / EN 10217-7 standard equivalents, built to withstand chemical washdowns in sanitary environments.
Get Korea PriceUnderstanding South Korea's transition to 430 (SUS430) welded stainless steel for optimized cost-performance and localized material properties.
In South Korea’s industrial landscapes—spanning major manufacturing zones like Ulsan, Busan, Gyeonggi-do, and Gwangyang—the demand for high-integrity ferritic stainless steel, particularly 430 stainless steel welded pipe, is accelerating. Traditionally dominated by austenitic grades (such as SUS304), South Korean industrial procurers and design engineers are increasingly shifting towards ferritic grades due to their high thermal conductivity, low thermal expansion coefficients, and robust resistance to stress corrosion cracking (SCC) under chloride conditions.
With volatile nickel prices affecting global markets, 430 Stainless Steel (UNS S43000) provides an exceptionally stable economic profile for Korean OEMs in the automotive exhaust, kitchen appliance, and heat exchanger sectors. As a chromium-only alloy (containing 16-18% Cr with minimal nickel content), SUS430 represents a highly strategic raw material alternative for South Korean operations. By combining our robust industrial output with state-of-the-art Chinese manufacturing facilities, Liaocheng Sihe is uniquely positioned to fulfill large-scale, high-precision supply contracts directly to Incheon and Busan Ports under shortened lead times.
Compare mechanical and chemical properties to optimize your specification matching process.
| Material Grade (Standard) | Carbon (C) % | Chromium (Cr) % | Nickel (Ni) % | Tensile Strength (MPa) | Yield Strength (MPa) | Thermal Expansion Coefficient (10⁻⁶/K) |
|---|---|---|---|---|---|---|
| SUS430 / ASTM 430 | ≤ 0.12 | 16.0 - 18.0 | ≤ 0.75 | ≥ 450 | ≥ 205 | 10.4 (at 100°C) |
| SUS304 / ASTM 304 | ≤ 0.08 | 18.0 - 20.0 | 8.0 - 10.5 | ≥ 515 | ≥ 205 | 17.2 (at 100°C) |
| SUH409 / JIS 409 | ≤ 0.08 | 10.5 - 11.7 | ≤ 0.50 | ≥ 380 | ≥ 170 | 11.0 (at 100°C) |
We utilize protective atmosphere industrial furnaces at 850°C-900°C, delivering pipes with high reflective finishes that require no further chemical passivation.
430 grade offers superior heat distribution capabilities compared to austenitic variants, limiting local hot spots and maximizing energy efficiency in condenser arrays.
Ideal for components subjected to frequent thermal cycling (such as automotive exhaust headers), lowering structural fatigue at joint interfaces.
Integrating a wider range of heat-resistant, sanitary, and ultra-long coils to service South Korea's petrochemical and precision electronics infrastructure.
Mirror-polished inner/outer surfaces developed specifically for high-end home appliances and kitchenware.
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Precision tolerance micro-tubing suitable for instrumentation, sensors, and aerospace control lines.
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Heavy-gauge flat-rolled steel plates intended for fabrication of industrial tanks and boiler outer casings.
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Ultra-fine coiled capillary designs for specialized medical equipment, lab analyzers, and cooling loops.
Send InquiryAdding value through advanced physical processing to meet stringent design criteria in Korea's shipbuilding and HVAC industries.
We support various materials (e.g., 304, 316L, 2205) and specifications (diameter 6.35mm to 19mm) for stainless steel coils to accommodate diverse client designs.
Includes bending, spiral forming, precision drawing, and other processes tailored for heat exchangers, condensers, and cooling coils.
High-precision laser cutting, mechanical cutting, or flame cutting for high-precision, clean edges, and efficient material processing.
We devote ourselves to developing new products with state-of-the-art technologies including pickling, bright annealing, mechanical polishing, and electro-polishing.
Precision end flanging and end-forming used in automotive exhaust systems, chemical pipelines, and precision instrument connections.
Liaocheng Sihe supply lines support major manufacturing nodes, delivering consistent quality to high-stress environments.
High thermal conductivity configurations for residential and industrial boilers.
Corrosion-resistant condenser and cooling coil networks.
Alloy lines for transporting low-corrosive organic acids and chemicals.
Polished hygienic tubing designed for food product conveying loops.
Electro-polished ultra-clean tubing lines for high-purity media.
Boiler feedwater tubes and condenser components for power generation.
Heavy-wall tubing for high-pressure petroleum processing plants.
Piping for vehicle exhaust systems, silencers, manifolds, and fuel lines.
Your Trusted Manufacturing Partner with Over a Decade of Production Experience
Liaocheng Sihe Stainless Steel Material LTD is a leading expert in the field of stainless steel coiled tubing, stainless steel polishing tubes, and stainless steel seamless coiled tubing. Utilizing six highly optimized production lines, we strictly manufacture high-quality sheets and pipe developments in accordance with global standards, including GB, ASTM, ASME, JIS, and EN.
Our extensive steel type portfolio features premium alloys: 304/304L, 316L, 321, 317L, 309S, 310S, INCOLOY 800, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625 series. These materials are highly popular across international sectors including military, semiconductor, pharmaceutical biotechnology, hydraulic parts, petroleum exploration, shipbuilding plants, air-conditioning, solar, and water heater manufacturing.
Our coiled tubing is available in sizes ranging from an outer diameter of 0.125 inches (3.175 mm) to 1 inch (25.4 mm), with wall thicknesses up to 0.165 inches (3 mm). We support continuous lengths up to 32,800 feet (10,000 meters) for cost-effective umbilical manufacturing. Customized dimensions can be produced and delivered to meet your specific requirements.
Fulfilling bulk supply contracts to Korea with rigorous logistics monitoring and quality testing protocols.
Durable coils engineered for sub-surface heat pump loops and water heater systems.
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High heat resistance stability, ideal for auto silencer assemblies and manifold tubes.
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Micro-scale diameter tubes developed for pressure gauges, instruments, and electronics.
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Food-grade safe tube design optimized for fast heat dispersion and cooling coils.
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Marine-grade low carbon tubing suited for instrumentation lines in subsea environments.
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Duplex stainless steel tubing with extreme mechanical strength and corrosion resistance.
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High-pressure seamless lines for offshore oil, gas, and marine heat transfer loops.
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Micro-tolerance interior/exterior finishes engineered for medical and semiconductor applications.
Get Korea PriceFlexible, customizable, and high-performance product designs engineered to meet standard specifications.
2205 duplex options containing austenitic and ferritic properties.
1/2 inch coiled stainless tubing constructed for robust installation bends.
Grade 310 high-temperature alloy coils optimized for furnace heaters.
Technical and commercial details regarding our international steel deliveries and customized processing capabilities.
