Duplex Stainless Steel Pipe Fittings UNS S31803
ASME B16.9 A815 UNS S31803 Duplex Stainless Steel Fitting
Wenzhou Shangle Steel Co., Ltd. (Shangle) founded in 2017,is a comprehensive company integrating industry and trade.As a leading supplier of stainless steel products in Wenzhou, it has a wide range of products in stock that have been rigorously tested and are ready to be shipped.
Description :
UNS S31803 has a high content of chromium, making the equal tee has good corrosion resistance. Even in chloride and sulphide environments, it exhibits very high resistance to stress corrosion cracking. But it will causes embrittlement at temperatures over 300°C.
Besides, UNS S31803 Equal TEE has good strength and elongation. And at low temperature, its notch ductility is better than ferritic and martensitic grades. Its working temperature at least is -50°C.
So this kind of stainless steel fittings is ideal for low temperature applications.
Duplex Steel Butt Weld Fittings are typically used in:
- Chemical processing, transport and storage
- Oil and gas exploration and offshore rigs
- Marine environments
- Pollution control equipment
Equal Tee begins as cast material, then rolled to the shape after reheating. This process is wrought. Most Butt Weld Fittings is also wrought fittings. So, UNS S31803 Equal Tee is one type of ASME B16.9 Butt Weld Fittings.
Chemical Composition %
| C | Mn | P | S | Si | Ni | Cr | Mo | N |
| 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 4.5-6.5 | 21-23 | 2.5-3.5 | 0.08-0.20 |
Mechanical Properties
| Yield Strength MPa |
Tensile Strength MPa |
Elongation min % |
HB
max |
| 66/450 | 90/620 | 20.0 | 290 |
Material Specfication and Dimension Standards:
| Product Category | Material Specification as per ASME/ASTM | Dimension Standards |
LR SR Elbow Return Bend Pipe |
ASME SA815/815M WPS31803, ASTM A815/815M WPS31803, ASME SA815/815M WPS31803W, ASTM A815/815M WPS31803W | ASME B16.9, ANSI B16.9, ASME B16.28, ANSI B16.28, ANSI B16.25 |
Size Range:
| Seamless | Welded | |
| Elbows | Upto 24" | Upto 42" |
| Tees | Upto 24" | Upto 36" |
| Reducers | Upto 24" | Upto 48" |
| End Caps | Upto 24" | |
| Return Bends | Upto 8" | |
| Cross | Upto 8" | Upto 36" |
| Swage Nipple | Upto 4" | |
| Special Fittings: Piggable Bends, 3D, 5D, 10D etc. Customized Bends, Miter Bends | As per customer drawings and datasheets | |
| Thickness | Sch 5, Sch 5s, Sch 10, Sch 10s, Sch 20, Sch 30, Sch 40s, Sch 40, Sch STD, Sch 60, Sch 80s, Sch 100, Sch 120, Sch XS, Sch XXS, Sch 160, upto 50mm in case of welded fittings | |
Detail Images:
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