Products Description
Product Specifications
| Standards | EN 10216-5 |
| Steel Grades |
X2CrNi18-9, X2CrNi19-11, X2CrNiN18-10, X5CrNi18-10, X6CrNiTi18-10, X6CrNiNb18-10, X1CrNi25-21, X2CrNiMo17-12-2, X5CrNiMo17-12-2, X1CrNiMoN25-22-2, X6CrNiMoTi17-12-2, X6CrNiMoNb17-12-2, X2CrNiMoN17-13-3, X3CrNiMo17-13-3, X2CrNiMo18-14-3, X2CrNiMoN17-13-5, X1NiCrMoCu31-27-4, X1NiCrMoCu25-20-5, X1CrNiMoCuN20-18-7, X1NiCrMoCuN25-20-7, X2NiCrAlTi32-20 |
| Equivalent Standards | ASTM A312, ASTM A213, ASTM A789/A790, DIN 17458, JIS G3459 |
| Outer Diameter (OD) | 5mm-630mm |
| Wall Thickness (WT) | 0.5mm-55mm |
| Length | Up to 18 m or customized |
| Surface Treatment | Pickled & passivated |
| Production Process | Cold Drawn |
| Condition | Solution annealed |
Cold Drawn Seamless Stainless Steel Tube is manufactured using a multi-pass precision cold-drawing process, achieving an outer diameter tolerance of Grade D4 (±0.1 mm) and a wall thickness tolerance of Grade T4 (±0.15 mm).
Compared to ordinary carbon steel piping, stainless steel offers a 60% improvement in corrosion resistance, enabling stable, long-term operation in harsh chemical environments characterized by acidic, alkaline, saline, or humid conditions.
Following solution annealing treatment, the tubing exhibits a uniform metallographic structure free of internal stresses, making it ideally suited for the demanding, high-pressure operating conditions required in chemical reactors, high-pressure heat exchangers, and pressurized transport pipelines.
Customized Services
- TORICH offers custom manufacturing for non-standard outer diameters and wall thicknesses. We provide specialized pipe end treatments-including angled cuts, square cuts, beveling, and chamfering-tailored to specific installation requirements.
- We offer advanced deep-processing services, including pipe bending, swaging, expanding, slotting, punching, and threading.
- We also provide U-tube bending services, specifically designed for use in shell-and-tube heat exchangers.
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Ti (%) | N (%) | Al (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| X6CrNiTi18-10 (1.4541 / 321) | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.015 | 17.0–19.0 | 9.0–12.0 | - | ≥5×C to ≤0.70 | - | - |
| X2NiCrAlTi32-20 (1.4876 / Alloy 800) | ≤0.05 | ≤1.00 | ≤1.50 | ≤0.030 | ≤0.015 | 19.0–23.0 | 30.0–35.0 | - | 0.15–0.60 | - | 0.15–0.60 |
| X2CrNiMoN17-13-5 (1.4439 / 317LMN) | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.015 | 16.5–18.5 | 12.5–15.0 | 4.0–5.0 | - | 0.10–0.20 | - |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength RP0.2 (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|
| X6CrNiTi18-10 (1.4541 / 321) | ≥520 | ≥205 | ≥40 | ≤95 HRB |
| X2NiCrAlTi32-20 (1.4876 / Alloy 800) | ≥500 | ≥210 | ≥30 | ≤90 HRB |
| X2CrNiMoN17-13-5 (1.4439 / 317LMN) | ≥530 | ≥240 | ≥35 | ≤95 HRB |
Possible Alternative Grades
- When 316L stainless steel proves ineffective against corrosive chemical media-such as hot organic acids, phosphoric acid, or fatty acids-Grade 1.4438 (317L stainless steel) offers significantly enhanced corrosion resistance.
- For demanding environments characterized by high concentrations of chlorides and hydrogen sulfide, Grade 1.4462 (Duplex 2205) is a suitable choice; with a PREN of ≥ 35, it exhibits outstanding resistance to chloride stress corrosion cracking.
application areas
EN 10216-5 cold-drawn seamless stainless steel is widely adapted for critical applications across various chemical processing equipment; specific applications include:
- Chemical Reactors: Internal coils, jackets, and connecting piping within batch reactors and continuously stirred tank reactors used for processing corrosive chemical substances under high-temperature and high-pressure conditions.
- Heat Exchangers: Used for heating, cooling, and condensing fluids within chemical process streams, including shell-and-tube, U-tube, and double-pipe heat exchangers.
- Distillation Columns: Reboiler piping, condenser piping, and internal column components utilized in petrochemical and solvent recovery distillation systems.
- Pressure Vessels: Seamless steel tubes used for pressure-bearing components within chemical storage and reaction units. These steel tubes fully comply with the relevant requirements of the Pressure Equipment Directive.
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
We offer a wide range of packaging options, including plastic end caps, woven bags, wooden crates, and iron frames. Custom packaging solutions, logo branding, and other personalized requirements are also available to meet specific customer needs.
FAQ
Q: What is the maximum service temperature for stainless steel tubes conforming to the EN 10216-5 standard?
A: The maximum continuous service temperature depends on the specific material grade. Austenitic stainless steels-such as Grade 1.4301 (304)-have a maximum service temperature of approximately 350°C, whereas Grade 1.4404 (316L), which contains molybdenum, can withstand temperatures of up to 400°C.
Q: What surface finish options are available for chemical processing applications?
A: We offer a variety of surface finishes, including pickling and passivation, bright annealing, mechanical polishing, and electropolishing.
Q: Do cold-drawn stainless steel tubes suffer from internal stresses that could lead to subsequent deformation?
A: No. Our tubes undergo solution annealing to relieve the internal stresses generated during the cold-drawing process. This ensures a uniform metallurgical structure, thereby preventing issues such as deformation or cracking.
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