Sihe Steel
Sihe Steel
Explore our premium range of ASTM compliant heat exchanger pipes, seamless coiled tubes, and specialized stainless steel plates.
Within high-performance industrial environments, the selection of heat exchanger piping determines not only thermal efficiency but the systemic lifecycle of entire operations. Alloy 317 (UNS S31700) and its low-carbon derivative 317L (UNS S31703) represent a significant technological upgrade over the conventional 316 series. Characterized by higher molybdenum (3% to 4%), chromium (18% to 20%), and nickel (11% to 15%) contents, 317 stainless steel exchanger pipes are strategically deployed to counter aggressive chemical attack, pitting, and crevice corrosion.
Developing a commercial procurement strategy requires transparent insight into metallurgy and market pricing structures. The cost structure of 317 stainless steel exchanger pipes is heavily dictated by the London Metal Exchange (LME) market rates for nickel and molybdenum. Because 317L requires up to 4% molybdenum, it naturally carries a raw material surcharge higher than 316L (2-3% Mo) and 304 (0% Mo).
Additionally, manufacturing complexities affect quotes. Seamless coiled tubing, capillary configurations, and precision bright annealed finishes require multi-pass cold drawing and inline vacuum annealing. At Liaocheng Sihe Stainless Steel Material LTD, we mitigate cost volatility through strategic raw material reserves and optimized energy consumption profiles, ensuring stable pricing and accurate quotes for projects worldwide.
As logistics grids face mounting geo-economic shifts, securing reliable supplier partners is a top business priority. Located in Shandong province, Liaocheng Sihe Stainless Steel Material LTD operates a highly integrated factory model. Leveraging China's Factory 4.0 infrastructure, we deploy automated controls across our rolling mills, bright annealing furnaces, and testing facilities.
This integration yields:
Liaocheng Sihe Stainless Steel Material LTD manages high-capacity production lines for stainless steel coiled tubing, capillary systems, and high-performance heat exchanger pipes. Following international standards such as GB, ASTM, ASME, JIS, and EN, our factory maintains rigorous quality metrics for export clients in over 30 countries.
Compare the chemistry and strength thresholds of 317L against standard industrial austenitic and duplex alloys.
| Grade (UNS) | Carbon (Max %) | Chromium (%) | Nickel (%) | Molybdenum (%) | Tensile Strength (MPa Min) | Yield Strength (MPa Min) |
|---|---|---|---|---|---|---|
| 317L (S31703) | 0.030 | 18.0 - 20.0 | 11.0 - 15.0 | 3.0 - 4.0 | 485 | 205 |
| 316L (S31603) | 0.030 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 | 485 | 170 |
| 304L (S30403) | 0.030 | 18.0 - 20.0 | 8.0 - 12.0 | - | 485 | 170 |
| Duplex 2205 (S32205) | 0.030 | 22.0 - 23.0 | 4.5 - 6.5 | 3.0 - 3.5 | 655 | 450 |
To ensure high performance under extreme conditions, Liaocheng Sihe enforces a comprehensive testing regime. Every production batch undergoes flaring, flattening, hardness, tensile, and air tightness tests. Our bright annealing processes ensure clean interior surfaces for critical applications in deep-sea umbilical lines, chemical reactors, and semiconductor tooling.
Our 317 stainless steel exchanger pipes and coiled tubes are deployed across various demanding industries worldwide.
From metallurgical design to custom bending and laser cutting, we supply tailor-made exchanger piping systems.
We process various materials (e.g., 304, 316L, 317L, 2205) and specifications (outer diameter 6.35mm to 19mm) for stainless steel coils to meet your heat transfer requirements.
Our workshop performs precision bending, tight-radius spiral forming, and clean drawing for high-density condenser configurations.
Using advanced laser systems and high-speed mechanical tooling, we deliver flat end-cuts and straight lengths without deformation.
Electropolishing, chemical pickling, and bright annealing processes eliminate surface contaminants and reinforce oxide barrier layers.
Our end-forming machinery performs precise flanging, expansion, and reduction for secure installation in exhaust manifolds and chemical processing systems.
Liaocheng Sihe is certified under major quality management frameworks to ensure global engineering compliance.
Technical details, commercial terms, and shipping procedures for international buyers.
Our prices are subject to change depending on raw material cost (nickel, chromium, molybdenum) and other market factors. We will send you an updated price list 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 in smaller quantities, please check our retail website for further distribution options.
Yes, we provide essential documentation including Certificates of Analysis / Conformance, insurance, country of origin, and other export papers as required by regional customs.
For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving deposit payment. Lead times become effective when we have received your deposit and have final approval for your products.
You can make payments via bank transfer, Western Union, or PayPal: 30% deposit in advance, and the remaining 70% balance paid against the copy of the Bill of Lading (B/L).
We warrant our materials and workmanship. Our commitment is to ensure satisfaction with our products. Regardless of warranty status, it is our company's policy to resolve all customer issues directly.
Yes, we always use export-grade packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature-sensitive items. Non-standard requirements may incur additional charges.
Shipping costs depend on the delivery method. Express is fastest but most expensive. Sea freight is the most cost-effective solution for large volumes. We can provide exact freight rates once we know the details of your order weight and delivery location.
Explore our selection of cold-rolled sheets, high-temp Inconel alloys, and precision capillaries.
