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By certification 
DIN2631 ASTM A182 S31803/2205/2207 Duplex Steel weld neck flange
The type of Fittings |
weld neck flange |
Materials Standard |
SA182/A182M |
Production Standard |
DIN2631 |
Pressure Class |
75LB, 125LB, 150LB, 300LB, 400LB, 600LB, 900LB, 1500LB, 2500LB; 5K, 10K, 16K, 20K, 30K |
Heat Treatment |
Solution |
Surface Finishing |
Pickling,Blasting |
Original |
China |
Technics |
Forging |
Material |
S31803/2205/2207 |
Wall Thickness |
SCH10S-SCHXXS |
Diameter |
1/2”-72” |
Certification |
3.1 Mill Certification |
Packing Detail |
Plywood Cases,Plywood Pallet,others |
Payment |
30%T/T in advance,70% before shipment |
Delivery time |
According to the quantity of order |
Application |
Chemical processing, transport and storage, Oil and Gas exploration and processing equipment, Marine and other high chloride environments, Pulp and paper digesters, liquor tanks and paper machines. |
CHEMICAL PROPERTIES:
Grade |
C |
Mn |
P |
S |
Si |
S31803/F51 |
≤0.030 |
≤2.00 |
≤0.030 |
≤0.02 |
≤1.00 |
S32750/F53 |
≤0.030 |
≤1.20 |
≤0.035 |
≤0.02 |
≤0.80 |
Grade |
Cr |
N |
Mo |
Ni |
V |
S31803/F51 |
21.0-23.0 |
0.08-0.20 |
2.5-3.5 |
4.5-6.5 |
/ |
S32750/F53 |
24.0-26.0 |
0.24-0.32 |
3.0-5.0 |
6.0-8.0 |
≤0.5 |
MECHANICAL PROPERTIES:
Grade |
Ultimate Tensile Strength ,psi Minimum |
Yield Strength,ksi Minimum |
Elongation Percent % |
Reduction of Area % |
S31803/F51 |
≥620 |
≥450 |
≥25 |
≥45 |
S32750/F53 |
≥800 |
≥550 |
≥15 |
/ |
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