Find ASTM A249 904L Tube, Welded Heat-Exchanger Tubes, 904L Condenser Tubes on Industry Directory, Reliable Manufacturer/Supplier/Factory from China.
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Model No.: ASTM, DIN, GB, AISI, JIS, ISO, etc other International Standards
ASTM A249 UNS N08904 Duplex Steel 904L Welded Heat-Exchanger and Condenser Tubes
Seamless tube is extruded and drawn from a billet while welded tube is produced from a strip that is roll formed and welded to produce a tube.
Welded tube is considerably less expensive than seamless tube and is readily available in long continuous lengths.
Electric Resistance Welded (ERW) pipe is manufactured by cold forming a flat steel strip into a rounded tube and passing it through a series of forming rollers to obtain a longitudinal seam.
The two edges are then simultaneously heated with a high frequency current and squeezed together to form a bond.
1. Duplex Steel 904L Welded Heat-Exchanger and Condenser Tubes Spection
| Standard | ASTM, DIN, GB, AISI, JIS, ISO, etc other International Standards |
| Dimensions | ASTM, ASME and API |
| Specifications | ASTM A249 |
| ERW Pipes & Tubes Size | 1/2″ NB – 24″ NB |
| EFW Pipes & Tubes Size | 6″ NB – 100″ NB |
| Pipes & Tubes Size | 1/2″ NB – 16″ NB |
| Length | Single Random, Double Random & Required Length or As per Customer Requirement |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | ERW / EFW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Treaded |
| Application | Food & Beverage Industry, Construction Industry, Nuclear, Thermal & Power Plants, Petrochemical, Boilers, Cement Industry, Geothermal Plants, Heat Exchangers, Instrumentation Jobs, Mechanical Jobs, Oil and Gas Equipments and Piping Works |
| Package | Plastic caps on botd ends, Steel bundle, Woven bag or acc. to customers' request |
2. About Duplex Steel 904L Pipe Tube
904L SS Pipes,Tubing Equivalent
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | KS | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | Z2 NCDU 25-20 | 904S13 | STS 317J5L | X1NiCrMoCu25-20-5 |
904L SS Pipes,Tubes Chemical Properties
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
| 904L | Min | – | – | – | – | – | 19.0 | 4.00 | 23.00 | 1.00 |
| max | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 2.00 |
SS 904L Mechanical Properties
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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