| Specification: | Austenitic-Ferritic(Duplex) Grade of Stainless Steel Welded and Seamless Tubes | 
| Application: | For Fluid Transport | 
| PSL1 Grade: | 022Cr22Ni5Mo3N 022Cr23Ni5Mo3N 022Cr25Ni7Mo4N 06Cr26Ni4Mo2 022Cr19Ni5Mo3Si2N 022Cr25Ni6Mo2N | 
| Manufacture: | Seamless or Welded Process | 
| Section of Shape: | Round | 
| Outside Diameter: | 15mm to 650mm according to GB/T 21835 | 
| Wall Thickness: | According to GB/T 21835 or Specified | 
| Length of Pipe: | Fixed 5.8/6 Meters or SRL/DRL or Specified | 
| Permissible Variations: | According to GB/T 21835 Standard | 
| End of Finish: | Plain & Beveled End &THD with Coupling | 
| Heat treatment: | Heat Treated | 
| Surface: | Bare or Coated Protective Paint or Anticorrosive Coating | 
| MTC: | Mill Test Certificate according to GB/T 2102 or EN 10204 3.1B | 
| Marking & Packing: | According to GB/T 2102 or Specified | 
| MOQ: | 5 Tons | 
| Transportation: | FCL&LCL by sea | 
| Delivery: | 10-15 days after signed contract | 
| Payment: | L/C or T/T or D/P or O/A | 



Relevant Links:
| 1 | ASTM A135 | Electric-resistance-welded(ERW) steel pipe in NPS 2 to NPS 30 | 
| 2 | ASTM A795 | Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use | 
| 3 | EN 10224 | Non-alloy Steel Tubes for the Conveyance of Water and Other Aqueous Liquids | 
| 4 | EN 10255 | Non-alloy Steel Tubes Suitable for Welding and Threading | 
| 5 | GB/T 12771 | Welded Stainless Steel Tubes for Liquid Delivery | 
| 6 | GB/T 13793 | Steel Pipes with a Longitudinal Electric Resistance Weld | 
| 7 | GB/T 14976 | Seamless Stainless Steel Tube for Fluid Transport | 
| 8 | GB/T 21832&3 | Austenitic-Ferritic(Duplex) Grade of Stainless Steel Welded and Seamless Tubes | 
| 9 | GB/T 3091 | Welded Steel Pipes for Low Pressure Liquid Delivery | 
| 10 | GB/T 8163 | Seamless Steel Tube for Liquid Service | 
| 11 | JIS G3442 | Galvanized Steel Pipes for Ordinary Piping | 
| 12 | JIS G3443 | Coated Steel Pipes for Water Service | 
| 13 | JIS G3452 | Carbon Steel Pipes for Ordinary Piping | 
