Products Description
Product Specifications
| Standards |
ASTM A789/ASME SA789 |
| Steel Grades | S31200 S31260 S31500 S31803 S32001 S32101 S32202 S32205 S32304 S32506 S32520 S32550 S32707 S32750 S32760 S32808 S32900 S32906 S32950 S33207 S39274 S39277 S82011 S82031 S82441 S83071 |
| Equivalent Standards |
EN 10216-5,DIN 17458,GOST 9941-81 |
| Outer Diameter (OD) | 1/8"–1" (3.18–25.4 mm) |
| Wall Thickness (WT) | 0.028"–0.120" (0.71–3.05 mm) |
| Length | 6/12m, or customizabal |
| Surface Treatment | Bright annealed |
| Production Process | Cold Drawn / Cold Rolled |
| Condition | Solution Annealed |
Thin wall seamless stainless steel tubing, manufactured from materials such as S32750 and S32205, offers superior strength properties. This allows for a corresponding reduction in wall thickness, thereby significantly reducing the self-weight of the umbilical cable.
The tubing complies with oil and gas industry standards-including API 17J and NACE MR0175-and undergoes rigorous solution annealing treatment to prevent intergranular corrosion, making it suitable for use within a temperature range of –50°C to 300°C.
Customized Services
- TORICH offers custom services for non-standard dimensions and continuous coil lengths.
- We provide customized surface treatments, including pickling and passivation, electropolishing, and bright annealing.
- We also offer customized packaging solutions-featuring water-resistant, anti-corrosive, and shock-proof materials-to prevent damage to the tubing during transit.
Chemical Composition
| Element | C max | Mn max | Si max | P max | S max | Cr | Ni | Mo | N | Cu | W |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S32205 (2205) | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.14–0.20 | - | - |
| S32750 (2507) | 0.030 | 1.20 | 0.80 | 0.035 | 0.020 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | 0.24–0.32 | - | - |
| S32760 | 0.030 | 1.00 | 1.00 | 0.030 | 0.010 | 24.0–26.0 | 6.0–8.0 | 3.0–4.0 | 0.20–0.30 | 0.50–1.00 | 0.50–1.00 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HBW) | Impact Toughness |
| S32205 | ≥450 | ≥620 | ≥25 | ≤290 | Excellent |
| S32750 | ≥550 | ≥795 | ≥15 | ≤310 | Excellent |
| S32760 | ≥550 | ≥750 | ≥25 | ≤300 | Excellent |
Possible Alternative Grades
- For hydraulic control lines in onshore oil & gas wells or low-pressure umbilical systems, TP316L and TP304L offer an excellent balance of cost, corrosion resistance, and manufacturability.
- For harsher conditions-such as deepwater service, sour environments, or high-temperature/high-pressure applications-6Mo alloy provides superior corrosion resistance and fatigue performance.
- For the most demanding environments, including ultra-deepwater (>3,000 m) and high-temperature offshore processing systems, Inconel 625 delivers exceptional strength, corrosion resistance, and long-term reliability.
application areas
Thin Wall Seamles Stainless Steel Tubing is manufactured using high-quality duplex stainless steel grades-such as 2205 and 2507-that comply with the ASTM A789 standard. It is specifically designed for hydraulic control umbilical systems within the oil and gas industry:
- Subsea hydraulic control umbilical tubing
- Deep-sea chemical injection lines
- Subsea boosting and processing system lines
- Topside platform and FPSO hydraulic systems
- Subsea wellhead and manifold pressure monitoring systems
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: Are the pipes suitable for operating conditions at a depth of 3,000 meters in the deep sea?
A: Yes. By utilizing S32750 super duplex stainless steel or Inconel 625 nickel-based alloy materials-combined with customized surface anti-corrosion treatments and stress-relieving processes-the pipes are capable of withstanding the high-pressure environment found at a depth of 3,000 meters in the deep sea.
Q: Can the pipes be welded, and will welding compromise their performance?
A: ASTM A789 stainless steel pipes are welded using matching filler materials and subsequently undergo solution annealing treatment; this ensures that the strength and corrosion resistance of the welded joints remain consistent with those of the base material.
Q: If hydraulic fluid is stored within the steel pipes for extended periods, is there a risk of rust formation or leakage?
A: No. Duplex stainless steel possesses excellent self-passivation and self-repair capabilities, demonstrating superior chemical compatibility and inertness when exposed to various conventional water-based or mineral-based hydraulic fluids.
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