Catalogue Balance of Plant (BOP)Chimney Fabrication

Images are representative illustrations. Products are custom-engineered to your requirement and actual appearance may vary.

Chimney Fabrication

We engineer and supply Chimney Fabrication as part of complete industrial heating and utility solutions. Share your capacity, fuel type, application, and site details — our team will recommend a suitable configuration and quote.

Height & Diameter

Set by dispersion requirement and gas volume

Custom capacities available on request

Construction

Self-SupportingGuyedLinedUnlined

Call 09425928651 Request a Quote

About Chimney Fabrication

A chimney does two jobs at once: it discharges flue gas high enough and fast enough to disperse properly, and it provides part of the draught the boiler needs to breathe. Height is not an aesthetic decision — it is set by the emission requirements in your consent to operate, and getting it wrong is a compliance problem rather than a performance one.

GyanTosh, based in Indore, fabricates and erects self-supporting and guyed steel chimneys for boilers, thermic fluid heaters, hot air generators and process furnaces. The structural design has to carry its own weight and the wind loading at that height, which is what drives plate thickness, base diameter and foundation loads. Where the gas is hot or carries acidic condensate, the shell is lined or specified in a grade that will survive it, because a chimney that corrodes from the inside gives no warning before it becomes unsafe.

The scope includes the parts that are easy to leave out of a quotation and difficult to add later: sampling ports positioned where the pollution board expects to take a reading, access for that sampling, aviation warning paint and lighting where the height requires it, lightning protection, rain caps, drains for condensate, and the expansion arrangement where the flue duct meets the shell.

Chimney Fabrication Key Features

Self-supporting and guyed steel chimney construction
Height set by the emission and dispersion requirement
Structural design for self weight and wind loading
Lining or material grade selected for gas temperature and acidity
Sampling ports and sampling access platforms
Aviation warning marking and lightning protection where required
Condensate drains and rain protection

Chimney Fabrication Specification

Type

Self-Supporting / Guyed Steel Chimney

Height

To suit dispersion and consent requirement

Diameter

Sized on gas volume and exit velocity

Structural Basis

Self weight and wind loading at design height

Lining

Refractory or acid-resistant lining where gas condition requires

Fittings

Sampling ports, access, lightning protection, aviation marking

Finish

Heat-resistant coating; aviation marking where applicable

Scope of Work

Sizing

Diameter set by gas volume and exit velocity, height by the dispersion requirement in the consent to operate — the two are decided together, not in sequence.

Structural Design

Shell thickness, base diameter, stiffeners and foundation loading calculated for self weight and wind at the required height.

Fabrication & Erection

Shop fabrication in sections with site assembly and erection, including anchor bolt setting and alignment.

Compliance Fittings

Sampling ports and access, aviation marking, lightning protection and drainage — the items a pollution board inspection expects to find.

Chimney Fabrication Applications

Boiler and thermic fluid heater flue dischargeHot air generator and process furnace exhaustDG set exhaust stacksDischarge downstream of bag filters, ESPs and scrubbersReplacement of corroded or under-height existing chimneys

Industries Served

ChemicalsFood ProcessingRice MillsTextilePaper & PackagingDistilleriesCementPower Generation

Advantages of a Chimney Fabrication

Height Set by the Requirement

Sized against the dispersion and emission requirement in your consent rather than to a rule of thumb, so the installation passes inspection the first time.

Designed for Wind, Not Just Weight

Wind loading governs a tall slender structure. Shell thickness, stiffening and foundation loads are calculated for it rather than assumed.

Corrosion Considered

Where gas is cool enough for acidic condensate to form, lining or material grade is specified accordingly — internal corrosion is invisible until it is structural.

Compliance Fittings Included

Sampling ports, access, aviation marking and lightning protection are in the scope, not discovered as extras during the pollution board visit.

Optional Accessories

Sampling Ports & Platforms

Access Ladder & Cage

Aviation Warning Lights

Lightning Protection

Rain Cap & Drains

Expansion Joint at Duct Connection

Guy Ropes & Anchors

Frequently Asked Questions(4)

How is chimney height decided?

By the dispersion requirement that applies to your installation, which the state pollution control board sets out in the consent to operate. It depends on the fuel, the emission and the surroundings rather than on the size of the boiler alone. Fabricating to a height chosen by rule of thumb and discovering it is short at inspection is an expensive way to find out, so the height should be confirmed against the consent before design.

Self-supporting or guyed — which do I need?

Self-supporting chimneys carry their own wind and dead load through the shell and foundation, need no surrounding space and are the usual answer where the plot allows the foundation. Guyed chimneys use a lighter shell braced by guy ropes, which costs less in steel but needs anchor points at a distance and clear ground around the base. Available space and foundation conditions usually decide it.

Does the chimney need lining?

It depends on how hot the gas is when it reaches the shell. Where gas cools below its acid dew point inside the chimney, condensate forms and attacks the steel from the inside — so lining or an appropriate material grade is specified. Downstream of a scrubber or a long uninsulated duct this is the normal case rather than the exception.

Can you replace an existing chimney?

Yes. Replacement is a common scope where an existing chimney has corroded, where a fuel change has altered the gas condition, or where a revised consent requires more height. The work usually has to be planned around a shutdown, so tell us the window you have.

What we’ll need for a fast quote

Capacity / size requirements
Process or application details
Material preference (M.S / S.S where applicable)
Installation location & delivery timeline

Quick Inquiry

GYANTOSH FABRICATORS PRIVATE LIMITED

Share your capacity, fuel type, and application — we respond within 24 hours.

09425928651 sales@gyantosh.com Back to Balance of Plant (BOP)

4, Nyay Nagar, Indore, Madhya Pradesh 452010, India

After it is installed

Equipment is the start of the relationship, not the end of it. We handle installation and commissioning, boiler AMC, retrofits, plant audits, spare parts and operator training — on equipment from any manufacturer, not only our own.