Duplex Steel Welded Round Tube
Duplex Steel Round Welded Tube Stockist, Duplex Steel Welded Round Tube Supplier,Duplex steel Welded Round Tube.
What is duplex steel welded tube, and what are its key properties?
A duplex steel welded tube is a type of tubular product fabricated from duplex stainless steel through the welding process. Duplex stainless steel is a unique alloy that combines the desirable characteristics of austenitic and ferritic stainless steel. One of the key properties of duplex steel welded tubes is their exceptional strength, which allows them to withstand high pressures and heavy loads. Additionally, these tubes exhibit excellent resistance to corrosion, including resistance to stress corrosion cracking, making them suitable for various challenging environments.
Duplex steel welded tubes also offer good weldability and formability, enabling easier fabrication and installation. Moreover, they demonstrate enhanced toughness and durability, ensuring longevity in demanding applications. With their remarkable properties, duplex steel welded tubes find applications in diverse industries such as oil and gas, chemical processing, desalination, and offshore structures, where their combination of strength, corrosion resistance, and reliability is highly valued.
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How does the manufacturing process of duplex steel welded tubes differ from other types of steel tubes?
The manufacturing process of duplex steel welded tubes differs from other types of steel tubes, primarily in the welding method used. Duplex steel welded tubes are typically produced using two common techniques: automatic tungsten inert gas (TIG) welding and the automatic plasma welding processes. These methods allow precise control over the welding parameters, ensuring a high-quality and consistent weld. Additionally, duplex stainless steel requires careful attention to heat input during welding to maintain the desired microstructure and material properties.
Specialized equipment and expertise are often required to handle the specific challenges associated with duplex steel welding, such as maintaining proper interpass temperatures and avoiding excessive heat-affected zone (HAZ) formation. Overall, the manufacturing process of duplex steel welded tubes involves specific considerations and techniques tailored to the unique characteristics of duplex stainless steel to ensure the production of durable and reliable tubular products.
Tube Standard | ASTM A789 / ASME SA789 |
Welded Tube Sizes | 1 / 2" NB - 24" NB |
Tube Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
Tube Manufacturing Process | Welded |
Duplex Steel Tube Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Tube Length | Single Random, Double Random, Standard & Cut length |
Tube End Types | Plain Ends (PE), Threaded Ends (TE), Bevelled Ends (BW), Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends) |
Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Duplex Steel Tubes, Finish as per customer Requirements |
Value Added Services | Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing |
Duplex Steel Round Welded Tube Stockist, Duplex Steel Welded Round Tube Supplier,Duplex steel Welded Round Tube.
Duplex Steel Square Welded Tube Stockist, Duplex Steel Welded Square Tube, Duplex Steel Welded Square Tube Supplier.
Duplex Steel Welded Rectangle Tube Supplier, Duplex Steel Welded Rectangular Tube, Duplex Steel Rectangular Welded Tube Stockist.
Duplex Steel Polished Welded Tube Supplier, DSS Polished Welded Tube, Duplex Steel Welded Polished Tube Stockist.
Product | Price |
Duplex Steel Square Welded Tube Price | $1,082.00 - $3,489.00/ Ton |
ASTM A789 Duplex Steel Welded Tube Price List | $700.00 - $1,900.00/ Ton |
DSS Welded Tube Price Per Kg | $4 - 23 / Kg |
DSS Welded Tube Price List | US $ 12 - 45 / Pound |
Duplex Steel Welded Tube Price In India | $698.00 - $1,480.00/ Ton |
Duplex Stainless Steel Welded Tube Price | US $ 1000 - 3000 / Ton |
Duplex Stainless Steel Welded Tube Price | US $ 1100 - 2000 / Ton |
Duplex Steel Welded Tube Price | US $ 1400 - 12000 / Ton |
Ferritic/Austenitic Duplex Steel Welded Tube Price Per Piece | $4.00 - $100.00/ Piece |
Avoid those problems that occur with low-quality Duplex steel welded tubes by getting high-quality Duplex steel welded tubes at competitive prices from us. Give us a call or send us an email to discuss how we can help you build your business. Working with such an esteemed client as you will make us happy.
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Preparing The Sheets
Before being selected to roll, the stainless steel sheets go through a number of inspections. Trimming them around the edges is the first step in preparing them.
Rolling Through Rollers
The desired size is then achieved by running the sheets through many rollers. You can see the sheets evolving into tubular shapes in this stage.
Rollers Through The Fitted Welding Machine
The tubular shape must pass through a customised welding equipment in this step. You get precisely rolled tubes by removing the weld beads and scraps from inside these tubular shapes.
Welding Process
The grade and application requirements have an impact on tube welding and forming. For the manufacturing of tiny diameter tubes, we employ TIG welding. Steel sheets are coiled and welded inside of a welding machine. The steel sheets are shaped into a coil before entering the machine. The seam between these coils is then welded to create a tube.
Electric Resistance Welding (ERW) Process
Tube is made using the Electric Resistance Welding (ERW) technique, which involves cold-forming a flat sheet of steel into a cylindrical shape. The steel is then heated by applying current to either of the cylinder's edges, forcing the edges to bond together firmly without the use of welding filler material.
Submerged Arc Welding (SAW) Process
An arc is created between a workpiece and a continuously fed bare wire electrode during the Submerged Arc Welding (SAW) procedure. Additionally, flux is used to create slag, produce protective gases, and provide alloying materials to the weld pool. Gas shielding is not required.
Electric Flash Welding Process
A steel sheet being transformed into a cylinder using the electric flash welding process. The edges are heated until they become semi-molten in this instance, and then they are pressed together until molten steel is squeezed out of the junction and forms a bead.
Annealing
Metal is heated above the point of re-crystallization and cooled to room temperature during the annealing process. The molecular bonds in metal tighten when it is shaped, making it rigid. The metal is put through an annealing process to regain its ductility.
Sinking Process
Tube sinking is a drawing technique that reduces the diameter of tubes. In this drawing technique, a tube is run through a die without the need of a mandrel. Good inner surface quality is not ensured when using a mandrel. The die angel determines the integrity of the outer surface. The die being used produces a uniform surface. A tube can be significantly smaller than it was originally. When cost is a factor, tube sinking is ideal.
Inspection and Testing
Before sending our items to our consumers, we conduct inspection procedures to verify their integrity.
Intergranular Corrosion (IGC) Test | Impact Test |
Macro Test | Dye Penetrant Test (DP Test) |
Flaring Test | Bend Test |
Positive Material Identification – PMI Testing | Hydrostatic Test |
Pitting Resistance Test | Eddy Current Testing |
Micro Test | Radiography Test |
Chemical Analysis – Spectro Analysis | Hydrogen-Induced Cracking (HIC) Test |
Mechanical Testing Such as Tensile, Elongation, Reduction of Area | Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177 |
Hardness Test | Ultra Sonic Test (UT) |
Flattening Test |
BWG | BWG | BWG | BWG | BWG | BWG | BWG | BWG | ||
25 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | ||
WT mm | WT mm | WT mm | WT mm | WT mm | WT mm | WT mm | WT mm | ||
Outside Diameter | Outside Diameter | 0.508 | 0.711 | 0.889 | 1.245 | 1.651 | 2.108 | 2.769 | 3.404 |
mm | inch | kgs/m | kgs/m | kgs/m | kgs/m | kgs/m | kgs/m | kgs/m | |
6.35 | 1/4 | 0.081 | 0.109 | 0.133 | 0.174 | 0.212 | |||
9.53 | 3/8 | 0.126 | 0.157 | 0.193 | 0.257 | 0.356 | 0.429 | ||
12.7 | 1/2 | 0.214 | 0.263 | 0.356 | 0.457 | 0.612 | 0.754 | ||
15.88 | 5/8 | 0.271 | 0.334 | 0.455 | 0.588 | 0.796 | 0.995 | ||
19.05 | 3/4 | 0.327 | 0.405 | 0.553 | 0.729 | 0.895 | 1.236 | ||
25.4 | 1 | 0.44 | 0.546 | 0.75 | 0.981 | 1.234 | 1.574 | 2.05 | |
31.75 | 1 1/4 | 0.554 | 0.688 | 0.947 | 1.244 | 1.574 | 2.014 | 2.641 | |
38.1 | 1 1/2 | 0.667 | 0.832 | 1.144 | 1.514 | 1.904 | 2.454 | 3.233 | |
44.5 | 1 3/4 | 1.342 | 1.774 | 2.244 | 2.894 | 3.5 | |||
50.8 | 2 | 1.549 | 2.034 | 2.574 | 3.334 | 4.03 | |||
63.5 | 2 1/2 | 1.949 | 2.554 | 3.244 | 4.214 | 5.13 | |||
76.2 | 3 | 2.345 | 3.084 | 3.914 | 5.094 | 6.19 | |||
88.9 | 3 1/2 | 2.729 | 3.609 | 4.584 | 5.974 | 7.27 | |||
101.6 | 4 | 4.134 | 5.254 | 6.854 | 8.35 | ||||
114.3 | 4 1/2 | 4.654 | 5.924 | 7.734 | 9.43 |
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Letter of Guarantee | Material Test Certificates |
ROHS Certificate | Certificate of Compliance/Conformity |
Certificate of Origin | Raw Material Test Reports |
Packing List | Quality Assurance Plan (QAP) |
Commercial Invoice | Heat Treatment Charts |
Fumigation Certificates | NABL approved Laboratory Test Reports |
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