Sihe Steel
Sihe Steel
Engineered to meet rigorous ASME, ASTM, and DIN parameters for severe thermal performance.
Years of Coiled Tubing Innovation
Advanced Production Lines
Exporting Countries & Regions
Max Continuous Pipe Length
Understanding the engineering demands of high-durability, corrosion-resistant heat transfer systems.
In high-pressure, thermal-cycling industrial environments, the selection of the heat exchanger tube material dictates the efficiency, safety, and longevity of the entire facility. Modern petrochemical processing, offshore oil gas extraction, and power-generation facilities operate under severe thermal fatigue stresses and highly corrosive conditions. Seamless stainless steel exchanger pipes, high-alloy precision capillary tubes, and continuous coiled tubings are designed to perform precisely at these operational thresholds.
To mitigate critical failures like stress corrosion cracking (SCC), intergranular attack, and localized pitting, global procurement managers rely on advanced metallurgical alloy classifications. From stable austenitic grades (such as ASTM 304 and 316L) to complex duplex structures (Duplex 2205, Super Duplex 2507) and nickel-based superalloys (Incoloy 825, Inconel 625), each material offers unique properties suited to specific chemical exposures, mechanical loads, and temperature ranges.
Optimized wall thickness tolerances ensure rapid, predictable thermal transfer across fluid interfaces, lowering thermal energy waste.
Engineered to resist concentrated chlorides, acidic condensates, and aggressive chemical solutions found in severe processes.
Resists extreme pressure spikes and mechanical vibrations inside shell-and-tube exchangers, preserving structural integrity.
A premier Chinese manufacturing house for advanced stainless steel coiled and polishing tubes.
Liaocheng Sihe Stainless Steel Material Ltd. is a leading expert in manufacturing high-quality stainless steel coiled tubes, stainless steel polishing tubes, and stainless steel seamless coiled tubing. Utilizing six highly sophisticated production lines, the company operates in strict compliance with GB, ASTM, ASME, JIS, and EN engineering standards.
Our metallurgy portfolio features a wide variety of steel types: Austenitic 304/304L, 316L, 321, 317L, 309S, 310S, and INCOLOY 800. For extremely harsh service applications, we engineer specialized materials including Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625 series.
Our coiled tubing is available in outer diameters ranging from 0.125 inches (3.175 mm) to 1 inch (25.4 mm), with wall thicknesses up to 0.165 inches (3 mm). By manufacturing continuous, single-piece lengths up to 32,800 feet (10,000 meters) without orbital welds, we reduce connection points, which greatly increases reliability in deep-sea umbilical systems and subsea applications.
We are focused on helping customers select the proper corrosion-resistant materials for demanding applications. By constantly improving the safety and reliability of our piping, we help lower operational risks for our global partners.
Standard parameters and custom ranges for heat exchanger and coiled piping applications.
| Material Class | Common Standard Grades | Outer Diameter (OD) Range | Wall Thickness (WT) Range | Continuous Coil Length |
|---|---|---|---|---|
| Austenitic Steel | 304/304L, 316L, 321, 317L, 309S, 310S, INCOLOY 800 | 0.125" (3.175 mm) to 1.0" (25.4 mm) | Up to 0.165" (3.0 mm) | Up to 10,000 meters (32,800 ft) |
| Duplex & Super Duplex | Duplex 2205, Super Duplex 2507 | 0.250" (6.35 mm) to 0.75" (19.05 mm) | 0.035" to 0.083" (0.89 mm to 2.11 mm) | Up to 6,000 meters |
| High Nickel Alloys | Incoloy 825, Inconel 625, Alloy 400 | 0.125" (3.175 mm) to 0.625" (15.88 mm) | 0.020" to 0.065" (0.5 mm to 1.65 mm) | Up to 5,000 meters |
How our stainless steel exchanger pipes and coiled tubes solve technical challenges across key sectors.
Industrial heat exchangers are critical components across many sectors, including energy production, aerospace, chemical processing, and food production. The mechanical and chemical challenges in these fields vary greatly, requiring targeted metallurgical solutions. Choosing the right steel grade and configuration ensures long-term operational safety and efficiency.
Tailoring physical configurations and surface characteristics to meet precise engineering specifications.
We work with various materials (such as 304, 316L, 2205) and custom specifications, including diameters from 6.35 mm to 19 mm, to fabricate tailored stainless steel coils.
Our processing includes bending, spiral forming, and precision drawing, producing custom geometries designed for tight spaces inside heat exchangers.
We offer laser cutting, mechanical cutting, and flame cutting to deliver clean edges and precise dimensional tolerances.
We apply advanced finishing technologies, including mechanical polishing and electro-polishing, to optimize flow dynamics and reduce contamination risks.
Our flanging services produce secure, tight-fitting connections suitable for automotive exhaust systems, chemical pipelines, and precision instruments.
How we verify material safety and performance integrity for mission-critical installations.
Liaocheng Sihe Stainless Steel Material Ltd. operates three specialized production lines dedicated to manufacturing long coiled tubes. We utilize advanced online bright annealing technology, which allows for continuous protective heat treatment of the stainless steel tubing under a controlled, oxygen-free atmosphere. This ensures a clean, oxide-free surface finish while maintaining the steel's metallurgical properties.
To verify the integrity of our tubes, we conduct a comprehensive series of quality control tests on every production batch:
Our manufacturing processes are verified by international testing bodies.
Technical and logistics questions answered by our engineering and sales teams.
Browse our selection of precision stainless steel sheets, plates, and specialized capillary tubing.
2205 duplex stainless steel containing austenitic and ferritic phases...
1/2" stainless steel coiled tubing and other high-precision dimensions...
Manufactured for high-temperature service and oxidation resistance...
A selection of tubing types designed for specific thermal environments.
