Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C AT SIGHT |
| Supply Ability | 500 pcs / month |
| Delivery Time | Depends on quantity |
| Packaging Details | According to client requirements/wooden case packing |
| Material Grade | S31803/S32205 |
| Standard | ASTM A240/ASME SA240 |
| Size | As per client's drawing |
| NDT | UT/PT |
| Application | Heat Exchanger/Boiler/Pressure Vessel etc. |
| Shape | Cylinder |
| Brand Name | YUHONG |
| Model Number | ASTM A240/ASME SA240 |
| Certification | ASME, PED, TUV, ABS, DNV, GL , LR , KR, BV, CCS, COST, ISO |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T, L/C AT SIGHT | Supply Ability | 500 pcs / month |
| Delivery Time | Depends on quantity | Packaging Details | According to client requirements/wooden case packing |
| Material Grade | S31803/S32205 | Standard | ASTM A240/ASME SA240 |
| Size | As per client's drawing | NDT | UT/PT |
| Application | Heat Exchanger/Boiler/Pressure Vessel etc. | Shape | Cylinder |
| Brand Name | YUHONG | Model Number | ASTM A240/ASME SA240 |
| Certification | ASME, PED, TUV, ABS, DNV, GL , LR , KR, BV, CCS, COST, ISO | Place of Origin | CHINA |
| High Light | S31803 Boiler Part Tubesheet ，Duplex 2205 Stainless Steel Boiler Part | ||
What is tubesheet for a Heat Exchanger?
Tubesheets have holes drilled to accept a series of tubes inside of an enclosed tubular pressure vessel. These pressure vessels, commonly referred to as shell and tube heat exchangers, are the most common heat exchangers used in oil refineries and large chemical plants. The tube sheet itself serves as a supporting element in heat exchangers and boilers. The tube sheet is called this because the tubes–which are carefully arranged in a specific pattern–penetrate the tube sheet in multiple places to allow the fluid within these tubes to flow in and out of the heat exchanger. The fluid flowing through the tubes within the shell exchanges heat with the fluid that flows into the shell but flows past the outside of the tubes exchanging the heat with the tube fluid.
A tubesheet is usually made from a round flat piece of plate,sheet with holes drilled to accept the tubes or pipes in a accurate location and pattern relative to one another.The tube sheets are used to support and isolate tubes in heat exchangers and boilers or to support filter elements. Tubes are attached to the tube sheet by hydraulic pressure or by roller expansion. A tubesheet may be covered in a cladding material which serves as a corrosion barrier and insulator. Low carbon steel tube sheets can include a layer of a higher alloy metal bonded to the surface to provide more effective corrosion resistance without the expense of using the solid alloy,which means it can save a lot of cost.
Chemical Composition
| UNS S31803 | Percent By Weight | |
|---|---|---|
| Cr | Chromium | 22.0 - 23.0% |
| Ni | Nickel | 4.5 - 6.5% |
| Mn | Manganese | 2.0% max |
| Si | Silicon | 1.0% max |
| P | Phosphorous | 0.03% max |
| S | Sulfur | 0.02% max |
| C | Carbon | 0.03% max |
| N | Nitrogen | 0.1 - 0.2% |
| Mo | Molybdenum | 3.0 - 3.5% |
| Fe | Iron | Balance |
Physical properties
| Physical property | Value |
|---|---|
| Density: | 0.278 lb/in3 |
| Melting Range: | 2525-2630°F |
| Specific Heat Capacity at 212°F | 0.119 Btu/lb/°F |
| Thermal Conductivity at 212°F | 8.4 Btu/hr-ft-°F |
| Poisson’s Ratio | 0.3 |
| Elastic Modulus at 72°F | 29 x 10 psi |
Mechanical properties
| Mechanical property | Value |
|---|---|
| 0.2% Yield Strength, ksi | 65 min |
| SA-240 S31803 Sheet & Plate Tensile Strength, ksi | 90 min |
| Elongation, % | 25 min |
| 22 Cr Duplex UNS S31803 Plate Hardness [HRC] | 293 max |
Tensile Properties
| Ultimate Tensile Strength, ksi Minimum | 2% Yield Strength, ksi Minimum | Hardness Max. |
|---|---|---|
| 95 | 65 | 31 Rockwell C |
Equivalent Grades
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Name | ||||
| S31803/DUPLEX 2205 | S31803/S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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