Water Tube Boilers

Water Tube Boiler Manufacturer in Pakistan Since 2002

A water tube boiler is the right choice when your factory needs a lot of steam at higher pressure. In this design, water flows inside the tubes and the hot flue gas passes around them. Because the water is spread over many small tubes, the boiler makes steam quickly and handles sudden load changes well. AGK builds water tube boilers from 10 to 30 TPH in single drum and double drum designs, and we fabricate every unit in our own workshop in Sahiwal.

When Should You Choose a Water Tube Boiler?

• Your steam demand is above 10 TPH, or you plan to expand soon.
• You need higher pressure for your process or for a steam turbine.
• Your plant runs 24 hours a day and steam must never stop.
• You want to burn coal, rice husk or mixed biomass at large capacity.

Water Tube vs Fire Tube: Simple Comparison

In a fire tube boiler, hot gas flows inside the tubes and water is around them. Fire tube boilers are simple and cost less, so they suit loads up to about 25 TPH at medium pressure. A water tube boiler costs more but gives higher capacity, higher pressure and faster response. If you are not sure which one you need, our engineers will check your steam load and suggest the right type.

Fuels and Firing Systems

Our water tube boilers are designed for local and imported coal and for all common biomass fuels in Pakistan, including rice husk, wood chips, corn cob and cotton stalks. We offer chain grate firing for coal and mixed fuel, and fluidized bed firing for fuels with high moisture or variable size. Read more about the design on the water-tube boiler page. If you only burn biomass, also see our biomass boiler range.

Installation, Service and Spare Parts

We deliver the boiler, economizer, fuel feeding, ash handling, dust collectors and piping as one package. Our team installs and commissions the plant, trains your operators and stays with you after start-up through 24/7 support and AMC contracts. Genuine boiler spare parts are available locally, so your plant does not stop while waiting for imports.

Industries That Use Our Boilers

High-capacity steam is needed in many sectors across Punjab, Sindh and Khyber Pakhtunkhwa. Our boilers serve textile spinning, weaving, dyeing and finishing units, edible oil and ghee refineries, beverage plants, dairies, paper and board mills, chemical plants, rice mills and feed mills. Each sector uses steam differently, so we design the drum size, superheater and controls around how your plant actually runs, not around a standard catalogue model.

Quality and Safety Checks

Steam at high pressure must be handled with care. Every pressure part we build goes through material checks, welding inspection and a hydraulic pressure test before it leaves our workshop. During commissioning we test safety valves, water level controls and burners or grates under real load, and we hand over a clear operating guide to your team. This is how we have kept customer plants running safely since 2002.

What We Need for a Quotation

• Steam required per hour (kg/hr or TPH) and working pressure
• Fuel you want to use (coal, rice husk, wood chips or a mix)
• Running hours per day and days per week
• Your industry and the main steam users in the plant
• City and site location, and the space available for the boiler house

Send these details on WhatsApp and our engineers will reply with a suitable design and price. If you prefer not to invest in a boiler at all, ask about our biomass steam supply service, where AGK runs the plant and you pay for steam.

Tips for Long Boiler Life

• Use treated, soft feed water to avoid scale and tube failure.
• Keep blowdown regular and check water chemistry every shift.
• Clean soot and ash so heat transfer stays high.
• Plan a full inspection and overhaul once a year.

Frequently Asked Questions

What capacities do you make?
We build water tube boilers from 10 to 30 TPH. The final size depends on your steam load, pressure and fuel.

Can a water tube boiler run on rice husk?
Yes. With the right furnace and firing system, rice husk and other biomass work very well in these boilers.

Do you offer service after installation?
Yes. Our engineers provide 24/7 support, yearly overhauls and AMC contracts. Visit our boiler services page or contact AGK with your requirement.

Water Tube Boiler vs Fire Tube Boiler

Many plant owners ask us which design is right for them. Both are good boilers, but they suit different jobs. Here is a simple comparison.

• How it works: in a water tube boiler, water flows inside the tubes and hot gas passes outside. In a fire tube boiler, hot gas flows inside the tubes and water is around them.
• Capacity: a water tube boiler is better for large loads, from 10 TPH up to 30 TPH and more. Fire tube boilers are best up to about 25 TPH.
• Pressure: water tube designs handle higher pressure safely, which makes them suitable for turbines and high-pressure process lines.
• Load changes: a water tube boiler responds faster when steam demand goes up or down.
• Space and cost: fire tube boilers are more compact and usually cost less for small loads.

If your plant needs less than 10 TPH, a fire tube boiler is often the simpler choice. For bigger loads, a water tube boiler is the right long-term investment.

Single Drum vs Double Drum Water Tube Boiler

AGK builds both single drum and double drum designs. A single drum water tube boiler is compact and quick to install. A double drum water tube boiler has a steam drum at the top and a mud drum at the bottom, which gives strong natural circulation and steady output at high loads. Our engineers choose the design based on your load, pressure and fuel.

Fuels for Our Water Tube Boiler Range

Our water tube boiler designs are made for the fuels used in Pakistan. They can burn local and imported coal, rice husk, wood chips, bagasse, cotton stalks and other biomass, as well as mixed fuel. With chain grate or fluidized bed firing, the boiler keeps a stable flame even when fuel quality changes from truck to truck. See our biomass boiler page for more on biomass fuels.

Water Treatment: The Key to a Long Boiler Life

Water tubes are narrow, so scale or sludge can block them quickly. Good water treatment is the most important part of water tube boiler care.

• Use a softener or RO plant to remove hardness.
• Dose the right chemicals to control oxygen and pH.
• Do regular blowdown to remove dissolved solids.
• Test feed water and boiler water every shift.

Our boiler services team can set up a simple water testing routine for your operators.

Water Tube Boiler FAQs

What capacity water tube boiler does AGK make?

We build water tube boilers from 10 TPH up to 30 TPH for coal, biomass and mixed fuel.

Is a water tube boiler safe?

Yes. Because the water is inside small tubes, a water tube boiler holds less water under pressure than a large shell boiler. With proper safety valves, controls and trained operators, it is a very safe design.

Can a water tube boiler run on rice husk?

Yes. We design the furnace, grate and ash system for rice husk and other biomass fuels.

How do I get a price for a water tube boiler?

Share your steam load, pressure, fuel and city on WhatsApp at +92 300 4493333, or contact AGK.