Table Of Content
Duplex stainless steel offers very good stress corrosion cracking resistance. Similar to the austenitic stainless steel duplex stainless steel grades offer a range of corrosion resistance. As such corrosion resistance depends mostly on the composition of stainless steel.
Preston Pipes and Alloys manufactures quality products with the latest technologies using top-notch quality raw material. Duplex and Super Duplex Steel Flanges are often demanded by our customers due to its strength, toughness, and ductility. Before packing the flanges, certain markings are done on each product one by one such as Degree, Size, Grade, Lot No, and company’s trademark.
Material test certificates such as 100% radiography test report, Third party inspection report, and raw material tests certificates are provided in accordance to EN 10204/3.1B. Soon after the manufacturing process of goods, they are immediately sent for quality assurance. Products are tested by quality inspectors on various parameters. Mechanical testing, Flattening test, Hardness test, Macro, and Micro test, hardness test, Pitting resistance test, Intergranular corrosion (IGC) test, Positive material testing – PMI test and many more are conducted by quality inspectors.
The utmost reason behind packing goods is to prevent damage from external sources. Packing of end products is done with the help of bubble wraps or plastic wrapping; this creates a protective layer on the surface of the product. Then they are safely placed in wooden cases, plywood crates or boxes so as to evade risk of transportation damages.
Duplex and Super Duplex Steel Flanges are manufactured in accordance with national and international quality standards. Commercial invoice, certificate of origin legalized, fumigation certificate, quality assurance plan, heat treatment chart, material test certificate, packing list including net weight and gross weight of the product, guarantee letter and many more.
We also manufacture goods on special request of the client’s. This helps us in creating a wide client base in the marketplace.
|Duplex Steel||1.4462||S31803 / S32205|
|Super Duplex Steel||1.4410||S32750 / S32760|
|S31803||0.030 max||2.00 max||1.00 max||0.030 max||0.020 max||22.0 – 23.0||3.0 – 3.5||4.50 – 6.50||0.14 – 0.20||63.72 min|
|S32205||0.030 max||2.00 max||1.00 max||0.030 max||0.020 max||21.0 – 23.0||2.50 - 3.50||4.50 – 6.50||0.8 – 0.20||63.54 min|
|S32750||0.030 max||1.20 max||0.80 max||0.035 max||0.020 max||24.00 – 26.00||3.00 – 5.00||6.00 – 8.00||0.24 – 0.32||58.095 min|
|S32760||0.05 max||1.00 max||1.00 max||0.030 max||0.010 max||24.00 – 26.00||3.00 – 4.00||6.00 – 8.00||0.20 – 0.30||57.61 min|
|Grades||Density (g/cm 3)||Density (lb/in 3)||Melting Point (°C)||Melting Point (°F)|
|S31803 / S32205||7.805||0.285||1420 – 1465||2588 – 2669|
|S32750 / S32760||7.8||0.281||1350||2460|
Duplex Steel WNRF Flange
Super Duplex Steel RTJ Flanges
Duplex Steel Slip On Flanges
Super Duplex Steel Socket Weld Flange
ASTM A182 Duplex Steel Forged Flange
ASME SA 182 Duplex Steel Blind Flanges
Super Duplex Steel Welding Neck Flange Supplier
Duplex Ring Type Joint Flanges Exporter
Duplex Steel Spectacle Blind Flanges
Super Duplex Steel Reducing Flange
Duplex 2205 Threaded Flange
WERKSTOFF NR. 1.4462 Tongue and Groove Flange
Super Duplex Steel 2507 Long Weld Neck Flanges
Super Duplex 2507 Plate Flanges
ASME B16.5 Duplex Steel WNRF Flanges
Super Duplex Steel S32750 Screwed Flange
Duplex Steel S31803 Flate Face Flanges
Super Duplex Steel S32760 Raised Face Flanges
Duplex Steel S32205 Ring Type Joint Flanges
DIN 1.4410 SORF Flange
Duplex and Super Duplex Steel Flanges are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of slip on flanges, socket weld flanges, forged flanges, blind flanges etc. through a worldwide network of stock-keeping branches. These are use in various industries like :
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