Duplex Steel S31803 / S32205 Instrumentation Ball Valves are high-performance ball valves that are formed with the most extensively used duplex stainless steel grade containing molybdenum, nitrogen and nickel content. These are austenitic-ferritic steel valves that offer superior resistance to corrosion and high strength. This alloy of valves also exhibits superior resistance to localized corrosion including pitting, crevice, and intergranular corrosion. These have good high-temperature oxidation resistance and are susceptible to chlorides stress corrosion cracking. These valves excellently possess good resistance in services such as brackish water, marine environments and in closed loop water systems. The grade of valves is highly ductile and tough as compared to other grades. These austenitic-ferritic valves result in superior mechanical properties that are able to deal with high-stress circumstances where other graded results in mechanical failure. The valves are solution treated up to 1020-1100 degree C and are rapidly cooled. Therefore these are not hardened by thermal treatment but are work hardened through the cold work process.
Virgin Engineers is a prominent manufacturer, supplier, and trader that are catering a wide range of Duplex Steel S31803 / S32205 Instrumentation Ball Valves all over the world. By means of numerous features such as strong construction, durability, resistance consistency, robust design, and dimensional accuracy these are greatly accepted by the clients. Therefore, these are broadly used in many industrial applications also. The product we offer to the customer is consists of rich quality properties that is designed from the optimum quality of raw material purchased from the authorized vendor of the market. To accomplish quality assurance product the whole raw material is strictly tested and inspected under the direction of quality inspection authority.
On the other hand, we install the highly advanced technology and the latest art of machinery in our manufacturing plant that aids to obtain the perfect and accurate dimensional product. We have the great support of years of experience gained professionals and skilled working force that assures to obtain the universal standard product. In respect to national and international standards, we provide our product in customized shapes, size, length, dimensions, thickness and grade as per the requirements and demands made by the patrons.
Quality testing & checking details
We follow up the various quality testing and examination procedures to carry out the quality assurance product. Such test is like an ultrasonic test, pitting resistance test, mechanical analysis, radiography test, PMI test, flaring test, chemical analysis and flattening test. Furthermore, the test is a tensile strength test, IGC test, macro/micro test, and hardness test and third-party inspection. All such tests are thoroughly performed under the control of quality inspectors of the industry. Test certificates
On the special request of the buyer, we offer reliable test certificates to them. These certificates are like raw material test certificates, 100% radiography test report and third-party inspection report.
Packing of product
To ensure the high quality of the product maintained each material is individually wrapped with high-quality packing material that aids to avoid no damage and rust at the last stage of production. Therefore we pack the products in plywood cases, cartons, boxes and in pallets.
ASTM A276, A351, A494 / ASME SA276, SA351, SA494
up to 6000 psi (413 bar).
¼" to 1”
up to 1200°F(648 °C)
Screwed (NPT / BSPP / BSPT)
DIN, ASTM, BS and all International Standards.
|S31803 / S32205
|22.0 – 23.0
|3.0 – 3.5
|4.50 – 6.50
|0.14 – 0.20
|21.0 – 23.0
|2.50 - 3.50
|4.50 – 6.50
|0.8 – 0.20
|Density (g/cm 3)
|Density (lb/in 3)
|Melting Point (°C)
|Melting Point (°F)
|S31803 / S32205
|1420 – 1465
|2588 – 2669
UNS S31803 / S32205 instrumentation ball valves are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.
The material tests performed on Duplex Steel S31803 / S32205 ball valves are burst tests, Ultrasonic Test, Mechanical Testing, Cryogenic testing, low temperature testing, High pressure gas testing, High temperature testing , etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.
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