Sihe Steel
Sihe Steel
Explore our premium industrial product portfolio. We support custom processing, straightening, and surface treatment options for global offshore oil fields, aerospace systems, and energy facilities.
High-temperature heat exchanger tubing designed for critical applications requiring oxidation resistance.
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Cost-effective structural tubing and piping with high formability and structural strength parameters.
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Seamless coiled tube solutions ideal for furnace tubing, radiant elements, and hydrocarbon processing.
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Ultra-smooth mechanical polish finishes matching high-purity medical and biotechnology instrumentation needs.
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General utility austenitic tubing with supreme mechanical resilience and chemical compatibility profiles.
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High-yield duplex alloy offering superior localized pitting and chloride stress corrosion cracking tolerance.
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Engineered to withstand cyclic thermal expansion stresses within industrial shell-and-tube setups.
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Extreme chemical resistance for deep-sea oil umbilical control lines under hyperbaric ocean pressures.
Get Factory Quote →When selecting a 1.5mm stainless steel sheet for industrial fabrication, precise chemical, structural, and mechanical tolerances determine system performance. Liaocheng Sihe Stainless Steel Material LTD specializes in tight-tolerance cold-rolling processes. A thickness of 1.5mm represents the ideal engineering equilibrium between weight minimization and mechanical load resistance—making it highly popular for cladding, heat shields, pressure vessel components, and umbilical tube core blanks.
| Alloy Grade | UNS / EN Designation | Yield Strength Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation A50 (%) | Primary Industrial Applications |
|---|---|---|---|---|---|
| 304 / 304L | S30400 / 1.4301 | ≥ 210 | ≥ 520 | ≥ 45 | HVAC, food processing, commercial architectural cladding, automotive manifolds. |
| 316 / 316L | S31603 / 1.4404 | ≥ 220 | ≥ 530 | ≥ 40 | Marine fittings, offshore instrumentation, pharmaceutical vessels, chemical tanks. |
| Duplex 2205 | S31803 / 1.4462 | ≥ 450 | ≥ 680 | ≥ 25 | Chloride-laden environments, desalination systems, downhole pipeline casings. |
| Super Duplex 2507 | S32750 / 1.4410 | ≥ 550 | ≥ 795 | ≥ 15 | Deep-sea subsea umbilicals, high-acid petrochemical processing, marine scrubbing. |
| Inconel 625 | N06625 / 2.4856 | ≥ 415 | ≥ 830 | ≥ 30 | Aerospace propulsion systems, exhaust ducts, flare stacks, high-pressure subsea shells. |
A sheet thickness of 1.5mm (equivalent to roughly 16 gauge in standard US sheet measurement) is frequently utilized in precision welding and stamping lines. We guarantee a thickness tolerance of ±0.03mm on all high-precision runs by implementing automated continuous thickness monitoring gauges in our cold-rolling mills.
Liaocheng Sihe Stainless Steel Material LTD operates six advanced production lines with a dedicated focus on cold-rolling, tube forming, and annealing technology. Our manufacturing site integrates World-Class Bright Annealing (BA) Technology, which utilizes a controlled pure hydrogen atmosphere for online heat treatment. This advanced setup prevents oxygen exposure during the annealing process, ensuring the stainless steel sheets and coils maintain a highly reflective, pit-free surface and clean metallurgical properties.
By coordinating with domestic primary smelting giants, we maintain secure raw material supply agreements for premium titanium-stabilized and molybdenum-containing alloys (such as UNS S31603, UNS S31803, and Inconel 625). Our vertically-integrated facility ensures that international procurement cycles are protected from local energy shifts or logistics delays. This guarantees a steady supply of high-grade sheets, pipes, and capillary tubing to support global infrastructure developments.
Liaocheng Sihe is a trusted OEM supplier to critical global sectors, including subsea exploration, pharmaceutical manufacturing, and aerospace engineering. Our products conform to major international standards (GB, ASTM, ASME, JIS, and EN) to ensure consistent performance in the field.
As offshore oil and gas extraction moves into deeper and harsher waters, subsea equipment is exposed to extreme pressures and corrosive environments. Standard carbon steels are susceptible to rapid failure in these settings, demanding high-performance materials for critical umbilical components.
Our engineering division designs custom corrosion-resistant alloys specifically for offshore hydraulic control lines, chemical injection lines, and subsea umbilical systems. By optimizing key metallurgical elements—including chromium, molybdenum, nitrogen, and nickel content—our materials are built to withstand severe chloride attacks and prevent stress corrosion cracking (SCC).
Liaocheng Sihe is more than a raw materials manufacturer. We are an integrated fabrication partner providing custom processing services to ensure all sheets and tubes integrate smoothly into our clients' assembly lines.
We support various materials (e.g., 304, 316L, 2205) and custom configurations (such as tube diameters from 6.35mm to 19mm) for stainless steel heat exchanger coils.
Our operations include custom bending, spiral forming, and precision drawing, delivering tight-radius components engineered for complex heat exchangers.
We provide advanced laser cutting, mechanical cutting, and flame cutting options, delivering high-precision dimensional tolerances to meet customer specifications.
We offer diverse surface finishes, including electro-polishing, mechanical polishing, and bright annealing, helping optimize products for specific sanitization or chemical needs.
We process precision flanged ends for connection interfaces in automotive exhaust systems, chemical pipelines, and precision instrumentation assemblies.
Liaocheng Sihe's products are used across critical process industries, where material failures can lead to operational downtime or safety hazards.
Liaocheng Sihe maintains a structured quality management system. Each production run is subjected to rigorous material testing, and our products conform to international quality certifications. We provide comprehensive mill test reports (MTR) according to EN 10204 3.1, confirming chemistry, tensile values, hardness, and corrosion testing compliance.
Our quality assurance includes mandatory material testing. We perform continuous hydrostatic pressure testing, eddy current flaw detection, micro-hardness mapping, elongation checks, flaring and flattening tests, and intergranular corrosion tests per ASTM A262. This ensures all materials are qualified for high-stress and harsh service environments before dispatch.
As global industries focus on environmental sustainability, steel production is adapting. Liaocheng Sihe is updating its processing facilities to improve energy efficiency and align with global carbon reduction initiatives.
By transitioning our bright annealing facilities to utilize green hydrogen derived from clean energy sources, we aim to reduce carbon emissions in our heat treatment cycles. This supports sustainability initiatives in our supply chain without affecting the mechanical properties of our stainless steel products.
We are expanding our product range to support emerging energy applications. This includes developing high-durability alloys designed to handle cryogenic hydrogen storage, geothermal brine exposure, and high-pressure carbon capture and storage (CCS) installations.
Have technical questions about our 1.5mm stainless steel sheets, coils, or heat exchanger pipes? Read through our primary B2B procurement FAQ below.
Our prices are subject to change depending on supply, alloy surcharge adjustments, and other market factors. We will send you an updated price list and a formal quote after your company contacts us for further information.
Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell or procure smaller quantities, please contact our export department to discuss our flexible distributor programs.
Yes, we provide comprehensive documentation, including EN 10204 3.1 Mill Test Certificates, Certificates of Analysis/Conformance, marine cargo insurance policies, Certificates of Origin, and all customs clearance documents required for import.
For samples, the lead time is about 7 days. For mass production runs of sheets, plates, or coiled tubing, the lead time is 20-30 days after receiving the deposit payment. Lead times become effective when we have received your deposit and final technical approval for the product specifications.
You can make the payment to our bank account, Western Union, or PayPal: 30% deposit in advance, and the remaining 70% balance settled against the copy of the Bill of Lading (B/L).
We warranty our materials and workmanship. Our commitment is to ensure satisfaction with our products. Regardless of warranty status, it is our company policy to address and resolve all customer issues to mutual satisfaction.
Yes, we always use high-quality export packaging. For sheets, we utilize solid wooden pallets with waterproof wrapping and steel banding. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature-sensitive items when required. Specialist packaging or non-standard requirements may incur an additional charge.
Shipping costs depend on the delivery method you choose. Express is typically the fastest but most expensive method. Sea freight is the standard solution for bulk orders. We can provide exact freight rates once we know the order quantity, weight, and destination port.
Liaocheng Sihe manufactures specialized products across several core categories. Select a category below to discuss technical specifications with our engineering division:
Liaocheng Sihe Stainless Steel Material LTD is a manufacturer specializing in the development and production of stainless steel coiled tubes, stainless steel polishing tubes, and seamless coiled tubing. Our operations are governed by international standards (GB, ASTM, ASME, JIS, and EN), ensuring consistent performance across all batches.
We work with a broad spectrum of steel grades, including austenitic series (304, 304L, 316L, 321, 317L, 309S, 310S), duplex grades (Duplex 2205, Super Duplex 2507), and nickel alloys (Incoloy 800, Incoloy 825, Inconel 625). Our products are used in demanding applications, including aerospace propulsion, semiconductor tooling, pharmaceutical biotechnology, and marine umbilical systems.
Duplex 2205 is a high-performance material containing mixed austenitic and ferritic phases, offering strong pitting resistance.
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1/2 inch stainless steel coiled tubing is designed for chemical transfer systems requiring high joint reliability.
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High-chromium-nickel alloy tubing engineered to resist oxidation and carburization under cyclic heat.
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Our manufacturing program includes specialized heavy-wall coiled tubing and ultra-fine capillary lines designed for high-pressure applications.
Flexible continuous tubing designed for downhole operations, chemical injection, and well intervention.
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Nickel-chromium-molybdenum alloy offering strong resistance to oxidation and pitting in corrosive environments.
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Precision micro-diameter tubing manufactured for HPLC instrumentation, sensors, and chemical dosing.
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Tight-tolerance capillary tubing for control instrumentation and automotive sensor applications.
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Ferritic stainless steel tubing with a highly polished surface finish, offering moderate corrosion resistance.
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High-alloy austenitic steel with low carbon content, designed for systems handling dilute sulfuric acid.
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Duplex pipe combining mechanical strength with resistance to stress corrosion cracking.
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Standard grade capillary tubing suitable for pressure measurement, temperature sensors, and micro-fluidics.
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