Design to Build Engineering Pakistan

Design to Build Engineering Pakistan Fabrication manufacturer of
LPG and ISO Tanks , all kinds of storage under the Qualified Professionals ASME Standard.

LPG Bowsers.All Chemical Soils Milk storage tanks.Shell and Tube Heat exchanger. LPG Filling Dispenser
LPG Storage Plant
03218490708

21/08/2026

🛢️ Oil Storage Tanks — Understanding the Critical Components

A quick 3D technical overview of an above-ground oil storage tank, covering the tank roof, floating roof, internal structural members, peripheral sealing arrangement and roof-mounted equipment.

Understanding these components is essential for effective inspection, preventive maintenance and safe operation of petroleum storage tanks.

Safety starts with understanding the equipment we work with.

21/08/2026


Oil and Gas World
Oil refinery

Step 1: Fabrication of Shell Sections
In a heavy fabrication shop, thick steel plates are rolled into large cylindrical sections called "shells" or "cans". You see many of them lying on the shop floor.

Step 2: Fit-Up, Alignment and Welding
The text on video says: Rolled Shell Sections → Fit-Up → Alignment → Welding
Using overhead EOT cranes, one shell is lifted and stacked precisely over the other. Workers check alignment, then weld the circumferential seams. You see sparks from manual welding on scaffolding all around the joint. This is repeated until the full 50m height is achieved.

Step 3: External Piping & Nozzles
Once the main body is ready, dozens of nozzles are cut and welded. These are the inlet/outlet points for crude oil, steam, reflux, and draw-off of different products. Workers are grinding and finishing the nozzle welds.

Step 4: Platforms, Ladders & Insulation Rings
Yellow safety platforms, vertical ladders, and caged walkways are welded around the column at different elevations. These are for operators to access instruments and valves during operation. Insulation support rings are also added.

Step 5: Final Inspection & NDT Testing
Before dispatch, every weld is tested. In the clip you see technicians doing NDT - Non-Destructive Testing - one holding an ultrasonic flaw detector. This checks for cracks, porosity or lack of fusion inside the weld without damaging it. Other NDTs like Radiography (X-Ray) and Dye-Penetrant are also done.

Step 6: Ready for Installation
The finished column is moved to site on heavy trailers and erected by 2-3 large crawler cranes. The last shots show it installed on its concrete foundation in the refinery, connected to the piping rack system. The caption: CRUDE OIL DISTILLATION COLUMN - ASSEMBLED • INSPECTED • READY FOR OPERATION

Call for inquiries:

03218490708

20/08/2026

,
BEM / BEU type - Straight tube, single-pass, fixed tubesheet design. This is the workhorse for Oil & Gas, Chemical, Refinery, and Power Plants.
The end view shows the tube bundle clearly.
Technical Specification Sheet
1. General Construction
• Design Code: ASME Sec VIII Div.1, TEMA Class R • Orientation: Horizontal, ground-mounted on 2 saddle supports • Configuration: Shell & Tube - Counter-flow arrangement • Image Model: Appears to be ~ 6-8 meters long, ∼1.5-2 meters shell diameter
2. Material of Construction (MOC) - Typical for this duty
• Shell: Carbon Steel SA516 Gr.70 • Tubes: 19.05mm / 25.4mm OD, SA179 / SS 316L / SA213 TP304 - depending on fluid corrosiveness • Tubesheets: Carbon Steel with SS cladding / Solid SS 316L • Baffles & Tie-rods: Carbon Steel / Stainless Steel • Channel / Heads: Carbon Steel SA516 Gr.70
3. Thermal Performance
• Function: Optimized Heat Transfer - As mentioned in your creative • Surface Area: Estimated 150 - 400 m² for this size • No. of Tubes: ~ 300 - 600 tubes • Temperature Range: -29°C to 400°C • Design Pressure: Shell Side: 10-25 barg / Tube Side: 10-30 barg • Efficiency: Maximum efficiency as per TEMA, low pressure drop Design to Build Engineering

LPG Storage Tanks LPG Road Transport LPG filling station.
20/08/2026

LPG Storage Tanks
LPG Road Transport
LPG filling station.

Nitric Acid Storage Tanks NITRIC ACID STORAGE TANKS - Short Specs1. Product Details:• Chemical: Nitric Acid HNO3 • Conce...
20/08/2026

Nitric Acid Storage Tanks
NITRIC ACID STORAGE TANKS - Short Specs
1. Product Details:
• Chemical: Nitric Acid HNO3 • Concentration: 55% to 68% (Standard) / 95%+ Fuming (On request) • Sp. Gravity: 1.5 Design • Temp: Ambient (up to 45°C for your area)
2. Tank MOC:
• Up to 68%: 304L / 316L Stainless Steel (Passivated) or HDPE / FRP with Vinyl Ester Liner • 98% Fuming: High Purity Aluminum / 304L SS • Never Use: MS, Carbon Steel, Copper, Brass
3. Design Standard:
• Code: API 650 / ASME Sec VIII / ASTM D1998 & D3299 • Capacity: 5,000L to 50,000L • Type: Vertical, Flat Bottom, Conical/Dished Top • Pressure: Atmospheric + Vent
4. Safety Features:
• 110% Secondary Containment / Bund Wall • PVRV + Flame Arrestor + Fume Scrubber Vent • Magnetic Level Gauge + High Level Alarm • Bottom Drain + Top Inlet with Dip Pipe • Earthing & Bonding Lug • Corrosive / UN2031 / Class 8 Labeling
5. Compliance:
• PPE: Hard Hat, Goggles, Face Shield, Chemical Gloves, Safety Boots • No Smoking, Eyewash & Safety Shower within 10m • Hydrotest + PMI + Passivation Certificate

Call for your tanks inquiries:

19/08/2026

Storage Tanks and Their Applications:

Storage tanks are essential equipment used across industries to store liquids, gases, chemicals, fuels, water, and cryogenic fluids safely. Different tank designs are selected based on pressure, temperature, product characteristics, and storage requirements.

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🏭 Types of Storage Tanks

1️⃣ Horizontal Tank ✔ Fuel storage ✔ Chemical storage ✔ Easy transportation and installation

2️⃣ Vertical Tank ✔ Water storage ✔ Chemical storage ✔ Maximum storage capacity with minimum footprint

3️⃣ Elevated Tank ✔ Municipal water distribution ✔ Gravity-fed water systems ✔ Maintains system pressure

4️⃣ Spherical Tank ✔ LPG storage ✔ Ammonia storage ✔ High-pressure gas applications

5️⃣ Double Wall Tank ✔ Hazardous liquid storage ✔ Secondary containment protection ✔ Environmental safety compliance

6️⃣ Underground Tank ✔ Petrol and diesel stations ✔ Fire-safe storage ✔ Space-saving installation

7️⃣ Cone Roof Tank ✔ Petroleum products ✔ Chemicals and process liquids ✔ Atmospheric storage applications

8️⃣ Dome Roof Tank ✔ Large-volume liquid storage ✔ Reduced v***r emissions ✔ Improved structural strength

9️⃣ Open Top Tank ✔ Wastewater treatment ✔ Mixing and blending operations ✔ Process tanks

🔟 Jacketed Tank ✔ Heating and cooling applications ✔ Food, pharmaceutical, and chemical industries ✔ Temperature-controlled storage

1️⃣1️⃣ Cryogenic Tank ✔ Liquid Nitrogen (LN₂) ✔ Liquid Oxygen (LOX) ✔ LNG and other ultra-low-temperature fluids

1️⃣2️⃣ Portable Tank ✔ Bulk chemical transportation ✔ Fuel transport ✔ Intermodal logistics applications

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⚙️ Selection Factors

✅ Operating Pressure

✅ Operating Temperature

✅ Product Characteristics

✅ Storage Capacity

✅ Safety Requirements

✅ Regulatory Compliance

✅ Installation Location

💡 Engineering Insight

No single tank design is suitable for every application. The correct tank selection depends on product properties, operating conditions, safety requirements, and lifecycle cost. Proper design can significantly improve operational abilities.

Call 🤙 for your Storage need .

18/08/2026



What CO2 actually does to the fire.
Fire needs 3 things - Heat, Fuel, and Oxygen [Fire Triangle]. CO2 breaks the triangle by removing oxygen.
• Displaces Oxygen: Normal air is 21% oxygen. Fire needs at least 15-16% to burn. When CO2 is released, it floods the entire sealed engine room and brings oxygen level down to less than 15%. The fire suffocates. • Heavier than air: CO2 is 1.5 times heavier than air, so it sinks and blankets the engines, bilge, and floor where oil fire is. • Non-conductive and clean: It doesn't damage the Main Engine, Auxiliary Engine, electrical panels. It leaves no residue like foam or powder. That's why it's ideal for engine rooms. • Very fast expansion: Liquid CO2 stored in those red high-pressure cylinders expands ∼450 times when released, so a relatively small cylinder bank can flood a huge engine room.
It does NOT cool the fire much and does NOT make fuel non-flammable. It only starves it of oxygen.
2. How the system uses CO2 - as shown in your video
CONSTRUCTION:
CO2 Cylinders > Release Cabinet > Manifold > Distribution Piping > Sectional Valves > Discharge Nozzles over the engines.

For technical inquiry 🤙.

17/08/2026

Counter flow versus parallel flow in the heat exchanger?

Contact for your inquiries
03218490708

Horizontal CO₂ Storage Tank — Double-Wall Vacuum Insulated.It's designed to store liquid CO₂ at -40°C in cryogenic condi...
17/08/2026

Horizontal CO₂ Storage Tank — Double-Wall Vacuum Insulated.

It's designed to store liquid CO₂ at -40°C in cryogenic conditions. Here's what's in your diagram:
Construction
1. Double-Wall System:
• Inner Vessel: 316L Stainless Steel, 5mm thickness. 316L is used because it's corrosion-resistant to cryogenic CO₂. • Outer Shell: 304 SS, 6mm thickness. This is for structural protection. • Perlite Vacuum Insulation Gap: 25mm gap between inner and outer vessel, filled with Perlite and pulled to ∼1-10 Pa vacuum. This is the key - the vacuum minimizes heat ingress to keep the CO₂ at -40°C.
The detail inset "DETAIL A" shows it clearly: Outer shell > Perlite layer > Vacuum > Inner vessel with liquid CO₂ inside.

2. Key Components Labeled:
• Ellipsoidal Heads: 304 SS outer / 316L SS inner - the rounded ends of the tank • Fill/Inlet Port: Top, 316L SS, Flanged DN50 connection • Pressure Relief / Safety Valve: 316L SS, top right - critical for cryogenic tanks • CO₂ V***r Space / Ullage: The space above the liquid at -40°C inside • Liquid CO₂ at -40°C: Stored at ∼1100 kg/m³ density • Liquid Drain Outlet: Bottom, 316L SS Valve • Saddle Supports: Carbon steel, epoxy coated - the two feet holding the 2000mm long tank Design Specifications from the drawing • Tank Type: Horizontal CO₂ Storage Vessel, Double-Wall Vacuum Insulated • Capacity: 20,000 L Liquid CO₂ • Design Pressure: 20 bar (abs) • Operating Temperature: -40°C / 233K • Insulation: Perlite, 25mm, Vacuum (

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