Sihe Steel
Sihe Steel
Engineered to strict European standards, serving analytical, HVAC, medical, and industrial automation clients in the Belgrade metropolitan district.
High-precision micro-bore tubing featuring seamless cold drawing and mirror-smooth inner diameter finishes for reliable fluid control.
View Product Details
Dual-certified austenitic stainless steel tubing offering superior corrosion resistance and weldability for chemical processing.
View Product Details
Fully compliant with ASTM A269 specifications for general service, hydraulic control, and instrument lines across Western Balkans.
View Product Details
Ultra-tight tolerance capillary tubes engineered for high-pressure gas chromatography and precision dosing equipment.
View Product DetailsUnderstanding the technical requirements of Serbia's central manufacturing, HVAC, pharmaceutical, and energy sectors.
As the commercial and industrial capital of Serbia, Belgrade stands as a pivotal hub along the Danube logistics corridor and European Transportation Corridor X. The region has experienced accelerated industrial modernizations across several key verticals: chemical processing in Pančevo, pharmaceutical manufacturing in Vršac and Belgrade suburbs, automotive technology clusters in nearby Kragujevac, and expansive commercial HVAC integration in modern urban engineering projects such as Belgrade Waterfront.
High-precision 304 stainless steel capillary tubing acts as the critical vascular system for these advanced technologies. Whether serving as expansion tubes in refrigeration cycles, sample transfer lines in mass spectrometers at the Vinča Institute of Nuclear Sciences, or hydraulic sensing lines in regional power plants, the mechanical reliability of micro-bore tubing directly governs system safety and accuracy.
Key parameters maintained by Liaocheng Sihe Stainless Steel Material Ltd. for European exports:
| Steel Grade | EN Equivalent | Chemical Key Elements | Corrosion Resistance Level | Primary Belgrade Application Sector |
|---|---|---|---|---|
| AISI 304 | 1.4301 | 18% Cr / 8% Ni (C ≤ 0.08%) | Standard Industrial / Indoor & Mild Atmospheric | HVAC expansion valves, general hydraulics, instrument lines. |
| AISI 304L | 1.4307 | 18% Cr / 9% Ni (Low C ≤ 0.03%) | Enhanced Weld Zone Intergranular Corrosion | Welded capillary assemblies, brewery & beverage metering. |
| AISI 316L | 1.4404 | 16.5% Cr / 10% Ni / 2% Mo | High Marine & Acidic Chloride Environments | Pančevo petrochemical refineries, aggressive chemical dosing. |
| Duplex 2205 | 1.4462 | 22% Cr / 5% Ni / 3% Mo / N | Extreme Yield Strength & Stress Corrosion Cracking | Offshore subsea umbilicals, high-pressure gas extraction. |
Providing customized capillary and tubing components built to overcome complex fluid control challenges.
Belgrade’s rapid residential and commercial expansion mandates energy-efficient climate systems. Our 304 continuous coiled capillary tubing serves as thermostatic expansion valves, ensuring precise refrigerant pressure drops without restriction or particulate blockage.
Supplying high-purity micro-bores with electrolytic surface passivation. Ideal for liquid chromatography (HPLC) sampling lines, solvent dispensing equipment, and hygienic fluid metering in regional Serbian pharmaceutical plants.
Utilized in pressure transmitter impulse lines, steam sampling apparatus, and flue gas monitoring systems across Belgrade thermal power plants. Engineered to withstand continuous thermal cycling up to 800°C.
Aligning with Serbia's Industry 4.0 transformation and European sustainability goals for 2025–2035.
As Southeastern Europe transitions toward clean energy, ultra-smooth inner wall 304 and 316L capillary lines are being specified for hydrogen fuel cell dosing and high-pressure sensor lines to mitigate hydrogen embrittlement risks.
Embedding fiber-optic Bragg grating sensors directly into protective 304 capillary sheath tubing. Enables real-time structural health and temperature monitoring of Belgrade municipal bridges, district heating pipelines, and heavy industrial gear.
Manufacturing continuous orbital weld-free coils up to 10,000 meters (32,800 feet). Eliminates field joints, reducing leakage risks in subsea umbilicals, chemical transport, and regional utility installations.
Bridging Shandong’s advanced steel manufacturing capacity directly with Belgrade’s procurement networks.
Operating six modern precision production lines, Liaocheng Sihe is a specialized pioneer in stainless steel coiled tubing, micro-bore capillary tubing, polished pipes, and heat exchanger bundles. Utilizing state-of-the-art bright annealing lines imported from top international equipment makers, we achieve online inert gas softening without surface scaling.
Our smart manufacturing hub incorporates automated multi-pass cold drawing, 100% online eddy current defect detection, pneumatic bubble testing, and hydro-testing capable of verifying tube integrity under severe operational pressures.
A globally trusted supplier delivering high-grade coiled tubing and precision capillary pipes across 30+ countries.
Liaocheng Sihe Stainless Steel Material LTD from China operates six automated production lines and manufactures high-quality sheet and pipe developments. As a leading expert in stainless steel coiled tube, stainless steel polishing tube, and stainless steel seamless coiled tubing, production strictly follows GB, ASTM, ASME, JIS, and EN standards.
Steel Grades Manufactured: 304/304L, 316L, 321, 317L, 309S, 310S, INCOLOY 800, Austenitic 316L, Duplex 2205, Super Duplex 2507, Incoloy 825, Inconel 625 series, and specialized custom alloys.
Our products are widely applied in military equipment, semiconductor manufacturing, pharmaceutical biotechnology, precision instruments, hydraulic parts, chemical industry, boilers & heat exchangers, aerospace, automotive, electronics, petroleum exploration, precision machinery, rail transportation, shipbuilding, air-conditioning, solar energy, and water heater manufacturing.
Coiled tubing sizes range from outer diameter 0.125 inch (3.175 mm) up to 1 inch (25.4 mm), with wall thickness up to 0.165 inch (3 mm). Lengths up to 32,800 feet (10,000 meters) are available for cost-effective umbilical manufacturing. Customized sizes can be produced to meet specific client requirements in Belgrade and globally.
With over ten years of specialized coiled tube manufacturing history, our facility features world-first-class bright annealing technology, compressed testing, flaring, bending, hardness verification, stretch testing, and air tightness testing. Over 80% of our production is exported worldwide, including the US, Germany, Spain, South America, Southeast Asia, the Middle East, and Eastern Europe.
Providing value-added fabrication to suit Belgrade engineering requirements.
Supports multiple material grades (304, 316L, 2205) and outer diameters (6.35mm to 19.05mm) for continuous coiled tubing.
Custom spiral coiling, serpentine bending, and shape forming engineered specifically for compact heat exchanger units.
High-accuracy laser cutting, Burr-free mechanical cutting, and precision straightening for micro-bore capillary lines.
Mechanical polishing, bright annealing, and electropolishing techniques for sanitary and ultra-high purity applications.
Flared ends, swaged connections, and specialized fittings widely used in automotive exhaust systems and chemical pipelines.
100% pneumatic underwater testing, hydrostatic testing, and eddy current flaw detection prior to packaging.
Delivering high performance in diverse global and regional Serbian operations.
Clear answers regarding orders, technical specifications, and shipping to Belgrade and European destinations.
Our prices are subject to change depending on nickel/chromium raw material supply and market factors. We provide transparent, factory-direct updated price lists after your company submits specific size and quantity details through our quotation team.
Yes, we require all international shipments to meet an ongoing minimum order quantity. For standard 304 capillary tube sizes, MOQ typically starts at 100 kg or 1,000 meters depending on outer diameter. For custom trial batches, please consult our engineering sales desk.
Yes! We provide complete documentation packages including EN 10204 3.1 Mill Test Certificates, Certificate of Analysis/Conformance, Pressure Equipment Directive (PED) compliance, ISO 9001 quality certificates, Certificate of Origin, and full export bills of lading.
For stock samples, lead time is approximately 7 days. For mass production of capillary coils or straight cut lengths, production lead time is 20-30 days following deposit confirmation. Freight transport to Belgrade hub takes an additional 15-25 days via sea/rail intermodal freight.
We accept bank wire transfers (T/T), Western Union, and PayPal. Standard commercial terms are 30% deposit in advance and 70% balance against the copy of the Bill of Lading (B/L) or L/C at sight.
We warrant all materials and workmanship against manufacturing defects. It is our company culture to address and resolve all customer issues to total satisfaction. Every tube undergoes NDT eddy current testing prior to dispatch.
Yes, we utilize heavy-duty export packaging including wooden crates, waterproof plastic wrap, internal core spools for continuous coils, and end caps to prevent bore contamination during sea transit to European ports.
Browse our complete product catalog for heat exchangers, HVAC coil stock, and stainless steel micro-pipes.
Superior molybdenum-alloyed tubing engineered for chemical heat exchangers and marine cooling loops.
View Details & Quotes
Seamless continuous coiled tube specified for hydraulic control lines and downhole umbilical applications.
View Details & Quotes
Standard micro-bore tubing offering high dimensional accuracy for industrial sensor protection.
View Details & Quotes
Economical bulk supply options for HVAC manufacturers and industrial equipment integrators.
View Details & Quotes
Prevents carbide precipitation during welding, providing high integrity for complex welded assemblies.
View Details & Quotes
Specialized 2.8mm OD x 0.5mm WT continuous coil stock tailored for precision thermostatic controls.
View Details & Quotes
3.2mm OD coil tubes featuring mirror-smooth bore for chromatography and precision liquid metering.
View Details & Quotes
High-grade straight or coiled capillary stock manufactured strictly to ASTM A269 guidelines.
View Details & QuotesProviding heat-resistant stainless steel welded and seamless pipes for heavy automotive and industrial applications.
Ferritic stainless steel pipe engineered for high-temperature automotive exhaust systems and mufflers.
View Product
Marine-grade stainless steel coils with high molybdenum content for aggressive chemical environment defense.
View Product
Heat-resistant 25Cr-20Ni alloy tubing designed for high-temperature furnace tubes and exhaust manifolds.
View Product
High-temperature oxidation resistant seamless coils for petrochemical processing and thermal engineering.
View ProductLooking for reliable 304 stainless steel capillary tubing delivered directly to your Belgrade warehouse or manufacturing plant? Contact our technical engineering team today for instant specifications, mill test certificates, and factory-direct pricing.