API 650 or API 620 — which one do I need?

API 650 for atmospheric welded steel tanks. API 620 for low-pressure tanks up to 15 psig (LNG, refrigerated, cryogenic).

Can you handle floating-roof tank design?

Yes — external floating roof (EFR) and internal floating roof (IFR). Pontoon design, seal detail, drain leg, appendix H compliance.

Do you evaluate existing tanks for API 653 fitness-for-service?

Yes. Send shell thickness readings, settlement survey, bottom UT data. Fitness-for-service report with remaining life delivered.

Can you design foundations too?

Yes — ring wall, concrete slab, or piled. Settlement analysis coordinated with shell design.

What is your typical delivery time for a tank design?

Basic 30m API 650 tank: 12-15 days for calc + GA. Full drawings: 25-30 days.

Storage Tank Design Services (API 650, 620, AWWA)

Storage Tank Design

3d-labs provide services for Storage Tanks, 3D-LABS executed by a diligent team of professionals, which is highly skilled and makes use of latest technologies to carry out this service in the most effective manner.

Our support services cover all aspects of storage tank mechanical and process and thermal design.

Our Tank Offerings

* Vertical Tanks Design
   * Cone-Bottom Tanks Design
   * Open-Top Tanks Design
   * Horizontal Tanks Calculations
   * Steel-Lined Vessels Design
   * Non-Standard Tanks & Custom Molded Products

We provide a wide range of engineering services for Storage Tanks to our clients based not only in India but also in KOREA. In our range of Storage Tanks, we offer Resin Storage Tanks, Transformer Oil Storage Tanks, Wine Storage Tanks, Industrial Liquid Storage Tanks, Chemical Storage Tanks, Petrochemical Tanks and Water Storage Tanks.

Our Project Record

Storage tank design and detailing since 2003

Mechanical, process and thermal design for welded and bolted tanks, bins and silos — for national operators, EPC contractors and tank fabricators worldwide.

2003Designing since
12Countries delivered into
50+Named client organisations
14Design codes worked to

Selected projects

Treated waste water storage tankØ45.54 m × 8.45 mDar Al Handasah, EgyptAWWA D103
Raw & fire water storage tankØ9.88 m × 18.63 mAker Powergas Pvt LtdAWWA D103
Fresh, disposal, fire water & diesel bulk tanks—ADCOAPI 650
Double wall storage tank—Samsung EngineeringAPI 650
Bitumen tank shell design & repair50 t / 100 tPuma Energy, Bulwer Island, AustraliaAPI 650
Slag de-watering tank—Larsen & Toubro—
Flat bottom silos — maize, soya, rice—R P LtdEN 1993-4-1

Organisations we have delivered for

ADCO
Samsung Engineering
Larsen & Toubro
Puma Energy
Aker Powergas
Dar Al Handasah
Zydus Cadila

Codes we design to

API 650
API 620
AWWA D103
AS 2304
EN 1993-4-1
IBC

We stay on a project until the client signs it off. Revisions, clarifications and site queries are part of the job, not an extra. That has been the practice on every project since 2003.