





Pressure Storage Vessels
Pressure storage vessels hold gases and liquids above atmospheric pressure, or under vacuum, between process steps or at the end of a line.
We fabricate vertical and horizontal storage vessels, low-temperature vessels and buried vessels, with shells from 6 to 70 mm thick. Standard service is −40 °C to 300 °C; low-temperature vessels are built for design temperatures down to −196 °C.
Vessels are built under our special equipment production licence TS2236612-2027 for Class D (medium and low pressure) fixed pressure vessels. We fabricate to your design, or to drawings prepared by a licensed design institute.
| Type | Vertical, horizontal, low-temperature, buried |
|---|---|
| Design pressure | −0.1 (vacuum) to <10 MPa (Class D, medium and low pressure) |
| Design temperature | −40 °C to 300 °C; low-temperature design to −196 °C |
| Volume | 5 to 5,000+ m³ |
| Wall thickness | 6 to 70 mm |
| Materials | Q235B, Q245R, Q345R, Q490R, 15CrMo, 16MnDR, 09MnNiD, 06Ni7DR, 304, 316L, clad plate |
| Codes | GB/T 150, GB/T 151, TSG 21 |
| Licence | TS2236612-2027, fixed pressure vessels, Class D, valid to 2027-08-27 |
| Design basis | Your design, or drawings prepared by a licensed design institute |
- Fuel gas storage and transport
- Nitrogen and other industrial gas storage
- Chemical intermediates and solvents in petrochemical plants
- Air separation and refrigeration systems
- Low-temperature storage in 16MnDR, 09MnNiD, 06Ni7DR or stainless steel
- Material verification: incoming plate, pipe and fittings checked against mill test reports before cutting.
- CNC laser, flame or plasma cutting, with edge bevelling for weld preparation.
- Shell rolling on 3- and 4-roll benders, plate up to 70 mm.
- Longitudinal and circumferential seams welded by SAW and GMAW to qualified WPS/PQR.
- NDT by RT, UT, MT and PT; radiography in our own shielded RT room.
- Heat treatment where the design requires it.
- Machining and final assembly of nozzles, manways and supports.
- Hydrostatic test at 1.25 × design pressure with a 30-minute hold.
- Sa 2.5 blasting, epoxy zinc-rich primer and polyurethane topcoat on carbon steel surfaces.
- Packing and loading with overhead cranes up to 50 t.
- Documents supplied: certificate of conformity, quality certificate, as-built drawings, mill test reports (MTRs), WPS/PQR welding records, NDT reports, hydrostatic test report, heat-treatment chart (if applicable) and packing list.
What is the lowest design temperature you can build for?
−196 °C for low-temperature vessels, using low-temperature or stainless steels from our material list. Standard storage vessels cover −40 °C to 300 °C.
Can a storage vessel be customized for corrosive media or special cleaning requirements?
Yes. Material choice (304, 316L or clad plate) addresses corrosion, and the nozzle, manway and drain layout follows your data sheet.
Horizontal or vertical: which should we choose?
Horizontal vessels stay low and ship whole on saddles. Vertical vessels save ground space for larger volumes. Ground area, transport limits, draining and access usually decide it.
What tests are done before shipment?
Weld NDT by RT, UT, MT and PT, then a hydrostatic test at 1.25 × design pressure with a 30-minute hold. Reports go into the data book shipped with the vessel.
Related products.
Quote this product.
Send the medium, design pressure, temperature and quantity. An engineer replies with questions or a quotation.
- Sales contact
- Mr. Yu Jiakang
- WhatsApp / WeChat
- +86 183 1791 9067
- Factory
- No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700

Pressure vessels, storage tanks, SF double-wall tanks, steel structures and skid-mounted units, fabricated in Jinxian, Jiangxi since 2003.
Jiangxi Wanlong Industrial Co., Ltd.
No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700
Contact
- Mr. Yu Jiakang
- WhatsApp +86 183 1791 9067
- jiakang@wanlongindustrial.com
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