Home > Duplex Steel > Duplex Steel S31803 Tube Fittings
Paing is a leading manufacturer and supplier of high-quality tube fittings in Naypyidaw, Myanmar. Our Duplex Steel S31803 Tube Fittings are designed with greater strength, durability, and resistance to corrosion. These fittings provide safe and leak-proof connections in high-pressure and high-temperature applications. Due to their superior mechanical properties and increased resistance to stress corrosion cracking, they are suitable for high-performance industries like oil & gas, chemical processing, and marine applications. Paing’s precision-machined fittings ensure long-lasting performance in hostile operating conditions.
Duplex Steel S31803 Tube Fittings consist of an equal proportion of austenitic and ferritic stainless steel, with chromium (21-23%), nickel (4.5-6.5%), molybdenum (2.5-3.5%), and nitrogen. These fittings possess high tensile strength (620-880 MPa) and yield strength (450-550 MPa), ensuring maximum mechanical stability. Their pitting, crevice corrosion, and stress corrosion cracking resistance makes them suitable for harsh environments. Having medium thermal expansion, high thermal conductivity, and superior toughness, they function effectively at extreme pressure and temperature levels.
| ELEMENT | DUPLEX 31803 |
| NI | 4.50 – 6.50 |
| C | 0.030 max |
| MN | 2.00 max |
| P | 0.030 max |
| S | 0.020 max |
| SI | 1.00 max |
| CR | 22.0 – 23.0 |
| MO | 3.0 – 3.5 |
| N | 0.14 – 0.20 |
| FE | 63.72 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
At Paing Tube Fittings, we are the largest supplier, manufacturer, and exporter of Duplex Steel S31803 Tube Fittings in Naypyidaw, Myanmar. Our advanced manufacturing facilities, strategically positioned in the Myanmar, enable us to deliver high-quality solutions to meet your specific requirements. With a robust inventory of over 16,000 tons of top-grade materials, we are well-equipped to fulfil your needs promptly. Our commitment to excellence and efficiency ensures we always have the available stock to support your demands.
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex S31803 | S31803 | 1.4462 |
| Straight Union | Bulkhead Union | Reducing Union | Union Elbow | Union Cross | Union Tee |
| Male Connector | Female Connector | Male Bulkhead Connector | Female Bulkhead Connector | Male to Male Elbow | Male Elbow |
| Female Elbow | Male to Female Elbow | Male Run Tee | Male Branch Tee | Female Branch Tee | Female Run Tee |
| Male Adaptor | Female Adaptor | Tube End Reducer | OD Plug | Bulkhead Lock Nut | OD Cap |
Contact us to get a quick quote for your requirement.
Venton Tube Fittings is the premier supplier, manufacturer and exporter of Duplex Steel S31803 Tube Fittings in Naypyidaw, Myanmar. Our strategic manufacturing units placed in the Myanmar allow us to supply high-quality solutions customized to your needs. We value Efficiency and Excellence. Ensuring that our products meet the highest industry standards. Maintaining a well-stocked inventory we are always ready to ship orders in time and reliably. Our dedication to customer satisfaction compels us to deliver strong and reliable solutions for a wide range of industrial uses.
uplex Steel S31803 Tube Fittings find extensive applications in industries necessitating strong and corrosion-resistant fluid connections. In the oil & gas industry, they ensure safe tubing during offshore and onshore drilling activities. Chemical and petrochemical industries also depend on them for secure transportation of corrosive materials. They are also employed in desalination and marine plants because of their greater strength against seawater corrosion. Power plants, pulp and paper mills, and food processing industries gain from their hardness to operate for extended periods without much maintenance
Please feel free to contact us if you need any further information or for enquiry.
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Standard : ASTM A276, A479 / ASME SA276, SA479
Thickness : 0.6 mm THK to 6.00 mm THK
Size Range : 1/16” 1/2” & 1.5MM to 38.1MM
Outer Diameter : 6.00 mm to 60.00 mm