Sihe Steel
Sihe Steel
Explore our foundational range of certified seamless coiled, capillary, and heat exchanger tubing.
Excellent high-temperature oxidation resistance, widely configured in industrial furnace applications and process engineering environments.
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Premium heat-resistant grades engineered with optimized chemistry to endure cyclic thermal stress and avoid embrittlement.
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High mechanical strength combined with superb localized corrosion resistance for severe marine and acidic service environments.
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Specialized grade designed primarily for automotive exhaust applications demanding heat resistance and cost efficiency.
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Industry-standard heat transfer solution providing chemical stability and resistance against pitting in chloride mediums.
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Ultra-low carbon formulation ensuring minimization of intergranular corrosion after welding, optimized for structural chemical networks.
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High-precision micro-bore tubing engineered for medical instruments, HPLC chromatography, and temperature control applications.
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Titanium-stabilized sheet boasting high oxidation resistance and polished finish, ideal for architectural and aerospace setups.
View DetailsModern industrial plants operate under aggressive thermal, mechanical, and chemical stresses. The selection of fluid-conveying tubing is not merely a purchasing decision; it is a critical safety and durability metric. Selecting 316L seamless stainless steel tubing ensures high performance, minimal degradation, and absolute reliability.
Alloy 316L is an extra-low carbon variation of the molybdenum-bearing austenitic chromium-nickel stainless steel. The addition of Molybdenum (2.0% - 3.0%) dramatically improves resistance to localized corrosion, particularly pitting and crevice corrosion in warm chloride environments, compared to standard 304/304L alloys.
By restricting the carbon content to below 0.03%, the risk of chromium carbide precipitation during welding is eliminated. This ensures the integrity of the heat-affected zone (HAZ) and mitigates intergranular corrosion—making seamless 316L the material of choice for chemical reactors, desalination facilities, and subsea oil flowlines.
Seamless manufacturing eliminates the longitudinal weld line, ensuring isotropic mechanical strength and eliminating potential weak points vulnerable to stress corrosion cracking (SCC) under high pressure.
China's industrial clustering, especially in regions like Shandong, has optimized the entire supply chain of stainless steel production. For buyers globally, purchasing from certified factories like Liaocheng Sihe Stainless Steel Material LTD means securing premium quality materials alongside highly optimized logistics and costs.
Delivering high-integrity stainless steel systems to critical global industries.
Optimized for subsea control systems, downhole chemical injection, and subsea umbilical cables, where corrosion resistance against hydrogen sulfide (H₂S) and carbon dioxide (CO₂) is critical.
316L capillary and precision tubing feature an ultra-smooth inside diameter (ID) preventing particulate entrapment and biological contamination, complying with strict ASME BPE guidelines.
Bright annealed and mechanical-polished seamless tubes allow the transport of high-purity processing gases without outgassing or particulate generation, maximizing cleanroom yields.
Seamless coiled configurations reduce the necessity of intermediate welds, preventing potential refrigerant or chemical fluid leaks in condenser coils and heat exchange loops.
Our raw materials and final tubing products adhere rigorously to major international regulatory codes.
| Specification | Material Class | Typical Dimensional Ranges | Applicable Industries |
|---|---|---|---|
| ASTM A312 / ASME SA312 | Austenitic (316L, 304L, 310S, 321) | 1/8" to 30" Nominal OD | High-Temp & General Corrosive Piping |
| ASTM A269 / ASME SA269 | Austenitic (316L, 304, 321) | 0.125" to 1" Outer Diameter | Hydraulic, Instrumentation & Control Tubing |
| ASTM A249 / ASME SA249 | Austenitic Welded/Cold Worked | Exchanger Tube Thickness up to 3" OD | Superheaters, Heat Exchangers & Condensers |
| EN 10216-5 (TC1/TC2) | Seamless Stainless Steel Tubes | Metric sizes from 6.0mm upwards | European Pressure Equipment Directive (PED) |
| JIS G3459 | Austenitic / Duplex Alloys | JIS Standard nominal sizing | Japanese Chemical Plant & Power Pipelines |
Our processing centers support multi-radius bending, customized spiral coiling, and precise engineering designs for complex heat exchanger configurations.
Laser and mechanical cutting lines ensure minimal burrs, square ends, and absolute length conformity down to +/-0.1mm for automated robotic assembly.
From industrial pickling to electrochemical polishing (EP) and bright annealing (BA), we achieve specific roughness averages (Ra) under customer specifications.
Our mill certificates and manufacturing procedures pass the most stringent auditing parameters of international inspection bodies.
Expert clarifications regarding technical requirements, procurement parameters, standards, and global transport logistics.
Our pricing structures are determined dynamically based on the current LME (London Metal Exchange) raw material costs of Nickel, Chromium, and Molybdenum, along with customized order volumes, wall thickness complexities, and specialized finishing requirements. Reach out to our customer representative teams for a structured, non-binding quote tailored to your engineering project.
All international commercial orders require an ongoing minimum order quantity to sustain efficiency across our precision draw benches. For customized metric and fractional tube dimensions not currently in warehouse stocks, please discuss your pilot run needs with our export departments so we can align our production scheduling.
Absolutely. Every batch of 316L seamless or coiled tubing is dispatched with fully detailed Mill Test Certificates conforming to EN 10204 3.1. These detail the heat number chemical breakdown (Carbon, Manganese, Molybdenum, etc.), tensile and yield strength, elongation ratios, hardness values, and exact hydrostatic or eddy current verification outputs. Third-party inspections (such as SGS or TÜV) can also be facilitated for 3.2 certification compliance.
For prototype runs or standard stocking configurations, shipment prep requires approximately 7 business days. Large scale production runs for offshore umbilical projects or heat exchanger integrations typically require 20 to 30 days post deposit confirmation. Our sales teams will formulate an exact production roadmap during the initial quoting phase.
We accept standard TT (Telegraphic Transfer) transactions consisting of a 30% advanced deposit to initiate production planning, with the remaining 70% balance settled against presentation of the copy of Bill of Lading (B/L). Large-scale corporate contracts may also utilize irrevocable L/C (Letters of Credit) subject to pre-approval.
We utilize robust export packaging protocols designed specifically for marine transit. Long-length continuous coiled tubing (up to 10,000m) is wound onto heavy-duty wooden or steel reels and securely wrapped in moisture-resistant polymers. Hardwood crating is utilized for straight precision tubes to prevent handling distortion.
Yes. Due to the seamless structure and chemical stability of 316L (UNS S31603), it performs exceptionally well under hydrogen service conditions, mitigating hydrogen embrittlement risks. For elevated thermal service, we verify the material to ASME Section VIII parameters, guaranteeing stability up to 800°F (approx. 427°C) without scaling.
Explore additional product sizes, alloys, and processing styles for specialized applications.
Mechanically polished sanitary tube designed for hygiene-critical networks in the food and beverage industry.
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Precision 3/8" * 0.035" heat-exchanger grade coil optimized for cooling circuits and condenser assemblies.
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Martensitic stainless steel sheet featuring high mechanical wear resistance, ideal for structural wear plates.
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Cost-effective chromium-manganese-nickel alloy precision piping designed for general structural integrations.
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Heavy-duty 1/2-inch wall thickness coiled tube developed for high pressure hydraulic control systems.
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Molybdenum-fortified capillary tubing for chemical injection lines and precision sensing instruments.
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Precision draw 304 grade coiled piping manufactured to strict European dimensional tolerances.
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High-alloy heat-resistant steel designed to withstand structural exhaust vibrations under thermal cycles.
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