Package Fire Tube Boilers

Fire Tube Boiler Manufacturer in Pakistan Since 2002

A fire tube boiler is the most popular choice for small and medium factories in Pakistan. Hot gases from the furnace pass through tubes that sit inside a shell full of water. The design is simple, strong and easy to run, which keeps both the purchase price and the maintenance cost low. AGK builds package type fire tube boilers from 3 to 25 TPH in a three-pass design, made in our own workshop in Sahiwal and installed by our own engineers.

Why a Three-Pass Design Saves Fuel

In a three-pass boiler, the hot gas travels through the furnace and then through two banks of tubes before it reaches the chimney. Each pass takes more heat out of the gas and puts it into the water. The result is lower stack temperature, less fuel per ton of steam and a steady steam output for your machines. You can read about the basic design on the fire-tube boiler page.

Which Fuel Can You Use?

Our boilers burn local and imported coal and all common biomass fuels in Pakistan: rice husk, wood chips, wood logs, corn cob, cotton stalks, bagasse and pellets. We choose fixed bed, chain grate or fluidized bed firing based on your fuel and load. If you plan to run only on biomass, see our dedicated biomass boiler page. For gas or furnace oil, see our gas and oil fired boilers.

Who Uses a Fire Tube Boiler?

Textile dyeing and finishing units, food and beverage plants, ghee and oil refineries, dairies, feed mills, rice mills and paper mills all use this type of boiler for process steam. It is ideal when you need medium pressure steam, quick start-up and simple daily operation by a small team.

Fire Tube or Water Tube?

Choose a fire tube unit for loads up to about 25 TPH at medium pressure. If you need more capacity, higher pressure or very fast response, a water tube boiler is the better option. Our engineers will help you decide after checking your steam load.

Quality Checks Before Delivery

Every fire tube boiler shell, tube plate and furnace is welded and checked in our workshop. Before dispatch, each boiler passes a hydraulic pressure test. At your site we test the safety valves, water level controls and firing system under real load and train your operators before handover.

Installation and After-Sales Support

We deliver a complete package: boiler, burner or grate, fuel feeding system, ash removal, economizer, feed water tank, pumps, chimney and dust collector. Our team installs the plant, connects the steam and water lines and starts the boiler with your operators. After handover, we stay available on the phone and on site. Our engineers carry out yearly inspections, tube cleaning and overhauls, and we keep common spare parts in stock in Sahiwal so a small fault does not stop your production for days. Many customers choose a yearly AMC contract so that maintenance is planned and costs are fixed in advance.

What We Need for a Quotation

• Steam required per hour and working pressure
• Fuel type and how you will store and feed it
• Running hours per day
• City and available space for the boiler house

Send these details on WhatsApp +92 300 4493333 and we will reply with the right model and price.

Frequently Asked Questions

What sizes do you make?
We make package boilers from 3 to 25 TPH. Larger loads are covered by our water tube range up to 30 TPH.

Can my fire tube boiler switch between coal and rice husk?
Yes. With the right grate and air control, the same boiler can burn coal, biomass or a mix of both.

Do you provide spare parts and service?
Yes. Genuine boiler spare parts, 24/7 support and AMC contracts are available through our boiler services team. Contact AGK to discuss your requirement.

Fire Tube Boiler Selection Guide

A fire tube boiler is the most common steam boiler in Pakistani factories. It is simple, strong and easy to run. Before you buy, check these points so you get the right boiler for your plant.

Steam Load and Pressure

Add up the steam used by all your machines in kg per hour and add a margin for growth. Most dyeing, food and feed plants use between 3 and 15 TPH. AGK builds fire tube boilers from 3 TPH up to 25 TPH.

Fuel Type

Our fire tube boiler designs can burn coal, rice husk, wood chips, wood logs, bagasse and other biomass, as well as gas and oil. Tell us your main fuel and backup fuel, and we will design the furnace and grate for both.

Firing System

• Fixed bed: simple and low cost, good for smaller loads.
• Chain grate: automatic fuel feeding and ash removal for steady 24/7 steam.
• Fluidized bed: best for wet or mixed biomass fuels.

Three-Pass Design

In a three-pass fire tube boiler, hot gas travels through the boiler three times before it leaves the chimney. This gives more time for heat to pass into the water, so less heat is wasted and fuel use goes down.

Wet Back vs Dry Back Fire Tube Boiler

In a wet back boiler, the reversal chamber at the back of the furnace is surrounded by water. This makes the boiler more efficient and the refractory lasts longer. In a dry back boiler, the back chamber is lined with refractory. It is easier to open for inspection but needs more refractory care. Our engineers will advise which design fits your use and budget.

Common Fire Tube Boiler Problems and How to Avoid Them

• Scale on tubes: caused by hard water. Use a softener and regular blowdown.
• Soot and ash build-up: lowers heat transfer. Clean tubes on schedule.
• Low steam pressure: often due to wet fuel or poor air control. Keep fuel dry and tune fans.
• Leaking tubes: usually from corrosion or overheating. Treat water and keep the right water level.

If your boiler shows any of these signs, our boiler services team can inspect it and suggest repairs. Genuine boiler spare parts are available locally.

Fire Tube Boiler FAQs

What sizes of fire tube boiler does AGK make?

From 3 TPH up to 25 TPH. For bigger loads we recommend a water tube boiler.

Can a fire tube boiler run on rice husk?

Yes. Many of our boilers run on rice husk with chain grate or fixed bed firing. See our biomass boiler page for details.

Do you install the boiler at our factory?

Yes. Our team delivers, installs and commissions every fire tube boiler and trains your operators.

How can I get a quote?

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