ASME U Stamp Shell and Tube Heat Exchanger Acid Gas Pre-heater U Tube Bundle for SRU
YUHONG is a leading manufacturer of high-quality heat exchanger bundles and pressure vessels, specializing in providing solutions for the oil and gas industry, petrochemical plants, and sulfur recovery units (SRU).
ARU Acid Gad Pre-heater Heat Exchanger Parts List
| Item No. | Part Name | Description | Qty. | Specification | Material / Standard |
| 63 | Blind | Flange | 1 | BLND ON 1" ANSI 600# | SA 105 |
| 42 | Nozzle | Nozzle | 1 | DN 1" ANSI 300# LND-NT L=213 | SA 106 |
| 41 | Plug | Pipe Plug | 2 | # 5/8 | SA 182 F304 |
| 40 | Eyebolt | Lifting Eyebolt | 3 | # 5/8 | SA 193 B7 |
| 39 | Nut | High Hex Nut | 40 | 1-1/8" | SA 194 2H |
| 38 | Stud | Stud Bolt | 20 | 1-1/8" - L=300mm | SA 193 B7 |
| 37 | Gasket | Spiral Wound Gasket | 1 | THK. 3mm - for #456/436 | SS 304 + Graphite |
| 36 | Gasket | Spiral Wound Gasket | 1 | THK. 3mm - for #456/436 | SS 304 + Graphite |
| 35 | Impingement Plate | Baffle Plate | 1 | THK. 8mm - 352-220 | SA 516 Gr.60 |
| 34 | Spacer | Tube Spacer | 72 | # 10m.5 L=184mm | SA 179 |
| 33 | Spacer | Tube Spacer | 6 | # 10m.5 L=583mm | SA 179 |
| 32 | Nut | Hex Nut | 12 | #3/8 | SA 194 2H |
| 31 | Rod | Tie Rod | 6 | #3/8 - L=2900mm | SA 193 B7 |
| 30 | Sealing Strip | Seal Strip | 2 | PL 2mm - L=2305mm | SA 516 Gr.80 |
| 29 | Baffle | Cross Baffle | 6 | THK. 8mm - #427 | SA 516 Gr.60 |
| 28 | Baffle | Cross Baffle | 7 | THK. 8mm - #427 | SA 516 Gr.80 |
| 27 | U-Tubes | Heat Exchanger Tubes | 56 | # 10.05mm - L=3000mm | SA 213 TP321 |
| 26 | Tube Sheet | Tubesheet | 1 | THK. 80mm - #456 | SA 266 Gr.11 CL2 |
| 25 | Plug | Pipe Plug | 2 | 1/2" NPT | SA 105 |
| 24 | Coupling | Half Coupling | 2 | DN 1/2" ANSI 300# | SA 105 |
| 23 | Sliding Rod | Sliding Bar / Guide Rod | 2 | # 20 - L=1945mm | SA 36 |
| 22 | Nozzle | Nozzle | 1 | DN 2" ANSI 300# LND-NT L=229mm | SA 106 |
ARU Acid Gad Pre-heater Technical Details
1. Shell Material: Killed Carbon Steel
2. Tube Bundle Material: Alloy Steel
Impact Testing: Conducted in accordance with Russian standards to ensure the material's toughness at low temperatures, especially for applications in harsh operating environments.
Hardness Testing: The maximum allowable hardness for the material is 225HB, ensuring durability and resistance to wear while maintaining ductility.
3. U-Bent Tubes: Stress Relief After Bending The heat exchanger tubes are precision U-bent to meet the design requirements. After bending, the tubes undergo stress relief treatment in accordance with ASME UCS-56.
4. Post-Weld Heat Treatment (PWHT) All welded components of the heat exchanger are subjected to Post-Weld Heat Treatment (PWHT) as per ASME standards.
ARU Acid Gad Pre-heater Applications
The ASME Certified ARU Acid Gas Pre-heater is engineered for critical applications in the oil and gas industry, including:
Sulfur Recovery Units (SRU)
Refineries
Chemical Plants
Power Generation
Engineering Support & Global Project Services:
For custom ASME design verification, HTRI thermal calculations, or urgent RFQ processing, our lead sales engineer Max Zhang (Yuhong Group) provides direct technical assistance.
Direct Line / WhatsApp: +86-153-8196-4640
Engineering Mail: max [at] steelseamlesspipe [dot] com
Official Spec Portal: www [dot] tema-heatexchanger [dot] com
This acid gas pre-heater bundle is engineered for sulfur recovery unit service, where process gas temperatures and corrosive species place real demands on materials and joint integrity. The U-tube configuration handles differential thermal expansion between the bundle and shell, while 304 stainless steel construction resists the corrosive attack typical of acid gas service. Fabricated under ASME U Stamp with CE certification, the bundle is built to match your existing shell envelope and tubesheet pattern for a direct replacement. Complete documentation, including material certificates and test reports, is supplied with installation support from our engineering team.
