■ Basic Information
Surface Treatment
Antiseptical
Usage
Heat Exchanger & Boiler
Wall Thickness
1.25-22.23mm
Product Name
Stainless Steel Seamless Precision Pipe
Grade
S31803/32750, Saf2205/2507
Production Capacity
1000 Tons Per Month
■ Product Description
UNS S31803 / S32205 Duplex Stainless Steel Tube / Pipe
Optimized for Chemical Industry applications. Duplex stainless steel tube dimensions: OD 6-101.6mm, WT 0.3-3.5mm.
Available Materials: S32205, S31803, S32304, S32750, S32760
■ Quick Details
| Parameter |
Specification |
| Production Standard | ASTM A789 |
| Material Grade | UNS S31803 / S32205 |
| Type | Welded Pipe |
| Application | Food / Chemical Industry |
| Delivery Condition | Anneal Or Pickled |
| Certificates | ISO 9001-2008, Manufacture License Of Pressure Tube |
| Inspection | SGS / BV / TUV Third Party Inspection Supported |
| OD Range | 6mm - 1000mm |
| WT Range | 0.5mm - 20mm |
■ Chemical Composition (%)
| Grade |
C≤ |
Mn |
P≤ |
S≤ |
Si |
Ni |
Cr |
Mo |
N |
| S31803 |
0.03 |
≤2.0 |
0.03 |
0.02 |
≤1.0 |
4.50~6.50 |
21.0~23.0 |
2.50~3.50 |
0.08~0.20 |
| S32205 |
0.03 |
≤2.0 |
0.03 |
0.02 |
≤1.0 |
4.50~6.50 |
22.0~23.0 |
3.0~3.5 |
0.14~0.20 |
■ Standards & Manufacturing
- ✔ ASTM A789: Standard specification for seamless and welded Ferritic/Austenitic stainless steel tubing.
- ✔ Welding Method: Seamless or automatic welding process without filler metal.
- ✔ Heat Treatment: Annealing according to ASTM A789 Table 3.
- ✔ Mechanical Testing: Tension, flattening, expansion, flange, and nondestructive tests (ET, UT, RT, or Hydrostatic).
■ Visual Presentation
Frequently Asked Questions (FAQ)
What is the difference between S31803 and S32205?
S32205 is a higher nitrogen-enhanced version of S31803, offering better corrosion resistance and higher strength, particularly in chloride environments.
What industries use duplex stainless steel pipes?
These pipes are primarily used in the chemical industry, food processing, heat exchangers, boilers, and pressure tube applications due to their high durability.
What quality inspections are available?
We support third-party inspections by SGS, BV, or TUV. Internal tests include tension, flattening, expansion, and various nondestructive tests like ET, UT, and RT.
What are the size and thickness ranges?
Our outer diameter (OD) ranges from 6mm to 1000mm, with wall thicknesses (WT) ranging from 0.3mm up to 20mm.
What standards are followed during production?
Our products strictly adhere to the ASTM A789 standard for seamless and welded Ferritic/Austenitic stainless steel tubing.
What is the monthly production capacity?
We have a robust production capacity of approximately 1000 tons per month to meet large-scale industrial demands.
Flowtera Pipe
