EximDataX

HS Code 8405Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiers

2 six-digit codes · Heading 5 of 86 in Chapter 84 · World Customs Organization Harmonized System

HS code 8405 covers machines that make fuel gas on site, such as producer gas, water gas and acetylene gas generators, plus the parts made for them.

Heading 8405 splits exactly two ways. Goods answering to “Generators for producer or water gas with or without their purifiers acetylene gas generators and similar water process gas generators, with or without their purifiers” classify either at 840510 or at 840590, and the wording in the table below is the whole of what separates them. The heading is number 5 of 86 in Chapter 84, Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof, which runs to 538 six-digit codes in all.

Six-digit codes under heading 8405

HS CodeImport–export description
840510Generators; producer gas, water gas, acetylene gas and similar water process gas generators, with or without their purifiers
840590Generators; parts of producer gas, water gas, acetylene gas and similar water process gas generators, with or without their purifiers

What HS code 8405 covers

A gas generator is a machine that makes a fuel gas from other materials.

So a generator that ships with its own purifier stays in this heading. The purifier does not need a separate code when it comes as part of the set.

The heading sits in Chapter 84 machinery, and Chapter 84 belongs to Section XVI. Under the Harmonized System, classification depends on what the goods are and what they do. Some traders call the same number the HSN code 8405. The digits do not change.

Many buyers search for this heading by the plain names of the machines. Others type the gas they need, such as acetylene. All of these searches lead to the same heading.

Difference between 840510 and 840590

The split is simple. One code is for the finished machine and the other is for pieces of it.

Use this short guide to pick the right one:

  • 840510: the complete generator.
  • 840590: parts of those generators.

How to choose between the two subheadings

Ask one question first: is the item a finished unit that can make gas? If yes, it belongs under 840510.

If the item is only a component built for such a generator, it belongs under 840590. A spare part shipped alone is a common example. Check the exact description on your invoice, because a general-purpose component may fall under a different heading altogether.

If you are not sure, run the product through the HS code classifier before you file.

How 8405 differs from nearby headings

Several nearby headings deal with boilers, heat and gas handling. They are easy to mix up with gas generators. Here is how to tell them apart:

  • 8402: steam or other vapour generating boilers, and super heated water boilers.
  • 8403: central heating boilers.
  • 8404: auxiliary plant for the boilers of 8402 or 8403, such as economisers and soot removers.
  • 8416: furnace burners and mechanical grates.
  • 8421: centrifuges and filtering or purifying machinery for liquids or gases.

HS code 8405 import export data: find buyers and suppliers

EximDataX shows shipment-level import and export records from official customs sources. Coverage: 43 direct customs feeds plus 184 mirror-derived countries. Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily. You can search by HS code to see who imports and exports a product, and book a free demo.

To see live 8405 shipment records by country, search the code on EximDataX and open the records for the market you care about. You can then look at importers, exporters and the goods they move.

Who ships under 8405?

EximDataX tracks the live import–export records filed under this heading and the 2 codes beneath it: named buyers, suppliers, quantities and values from official customs feeds.

See live data for 8405

Section XVI: Machinery, Electrical Equipment and Parts, chapters 84–85.

Straight answers

HS Code 8405: common questions

What is HS code 8405?

It sits in Chapter 84, which is part of Section XVI.

What is the HS code for acetylene gas generators?

Complete acetylene gas generators are classified under 840510. Parts made for them go under 840590.

What is the difference between HS 840510 and 840590?

840510 is for the complete generators. 840590 is for the parts of those generators.

Are gas purifiers classified under 8405?

Yes, when they come with the generator, because 840510 covers generators “with or without their purifiers”. A stand-alone gas purifying machine is a different case and is classified under 8421.

Is a steam boiler classified under 8405?

No.

See what your buyers are buying.Then decide.

Everything we show you comes from official customs filings — records, not claims. 30 minutes. Your shipment. Your HS code. Real platform. If you don’t see something new about your market by the end of the call, we walk away. No follow-ups.

Free 3-day test account. No card on file. No funnel email sequence.