DN200 A790 UNS 31803 EFW PIPE
UNS 31803 EFW PIPE
We are manufacturer of EFW PIPE and providing DN200 Sch10S EFW ASTM A790 UNS31803 for USA.
Feature
Size: DN200
Thickness: Sch10S
Type: EFW Pipe
Material: UNS31803
Standard: ASTM A790
Duplex Stainless Steel Pipe
Features
- High strength than austenitic stainless steel.
- Excellent corrosion resistance in a wide variety. It resists localized corrosion types like intergranular, crevice, pitting, as well as chloride stress corrosion cracking at 150 ℃. It has high oxidation resistance property.
- Lower thermal expansion and higher heat conductivity than stainless steel 316.
- Best suited heat treatment for UNS 31803 pipe is solution treatment (annealing) between 1020 ℃—1100 ℃, followed by rapid cooling.
- The machinability is low due to its high strength.
Application
Based on the good features, duplex stainless steel pipe UNS 31803 are usually applied in the following applications.
- Gas Processing
- Power Generation
- Petrochemicals
- Chemical Equipment
- Shipbuilding
- Marine
What is EFW Pipe?
EFW Pipe
ERW pipe (electric fusion welding pipe) is a steel plate or strip after curl forming welded steel. The production process is simple. High production efficiency, different specifications, less capital equipments, but the general strength of less than seamless steel tubes.
UNS 31803 Properties
ASTM A790 UNS 31803 Pipe Chemical Composition
| C | Mn | P | S | Si | Cr | Ni |
|---|---|---|---|---|---|---|
| 0.08 | 1.6 | 0.004 | 0.003 | 0.8 | 21 | 11 |
ASTM A790 UNS 31803 Pipe Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
|---|---|---|
| 650 – 850 (Mpa) | 310 (Mpa) | 40 (%) |
EFW Duplex Stainless Steel Pipe Specification
Standard
ASTM A789, A790, A928, A789
Grades
UNS S32205, S31803, S32750, S32760, SAF 2205, SAF 2507
Type
Seamless Pipe, Welded Pipe, ERW Pipe, EFW Pipe, Cold Drown Pipe, Hot Finish Pipe
Size
1/8 to 30 inch
Thickness
Sch 10s, 20, STD, 40S, XS, 80S, 160, XXS
duplex stainless steel pipe
Steel Pipe Manufactuer
Delivery port: Shanghai, Tianjin, Qingdao
Lead time: 10 days are ready to deliver
Shipment: LCL, 20GP, 40GP, Air, Courier
Document: CI, PL, CO, BL, MTC
Certificate: CE, ISO, TEST REPORT