How to request an accurate quotation for a custom pressure vessel or tank

To get an accurate quotation, send ten items: product type, quantity, medium, design pressure, design temperature, material, design code, drawings or data sheet, destination port and required delivery date. With these, a fabricator can price the actual vessel or tank instead of guessing, and you can compare quotations from different suppliers like for like.

What to send, and why each item matters

• Product type: pressure vessel, storage tank, heat exchanger, SF tank, steel structure or skid. It decides which licence and code apply.
• Quantity: one unit or a series. Repeat units share drawings, procedures and set-up.
• Medium: what the equipment holds, including corrosive, toxic or flammable components. It drives material choice and inspection extent.
• Design pressure: including vacuum if it applies. Pressure sets plate thickness and test pressure.
• Design temperature: both maximum and minimum. Low temperatures need low-temperature steels.
• Material: for example Q345R, 16MnDR, 304 or 316L, or ask the fabricator to propose one.
• Design code: the code the equipment must be built to, plus any project specifications.
• Drawings or data sheet: general arrangement, nozzle schedule, internals and supports.
• Destination port: it sets packing, marking and freight.
• Delivery date: the date you need the equipment at the port or on site.

Details that often change the price

• Extent of NDT, and whether full radiography is required
• Post-weld heat treatment
• Third-party inspection and witness points
• Coating system, insulation or lining
• Accessories such as ladders, platforms, instruments and agitators
• Documents, translations and data book format

If two quotations differ widely, check these items first. One supplier may have priced spot radiography and another full radiography, or one may have left out the coating.

If you have no drawings yet

Send a process data sheet with the duty, volume, pressure and temperature. For pressure vessels, drawings can then be prepared by a licensed design institute before fabrication. Until the design is fixed, treat the quotation as a budget price.

How Wanlong handles it

We fabricate pressure vessels to your design, or to drawings prepared by a licensed design institute. Our licence TS2236612-2027 covers Class D fixed pressure vessels, medium and low pressure, so the design pressure must be below 10 MPa. Storage tanks, SF double-wall tanks, steel structures and skids are quoted against your drawings or our standard ranges, such as SF-10 to SF-50. The enquiry form on this site asks for each of the ten items above. If something is missing, our engineers ask before they price.