The MSME registration asks for the business activity by NIC code. For construction and maintenance of industrial facilities such as refineries chemical plants etc., that activity is 42901.
NIC code · National Industrial Classification 2008
42901 is the 5-digit NIC 2008 code for construction and maintenance of industrial facilities such as refineries chemical plants etc.: a sub-class of class 4290, construction of other civil engineering projects, within division 42, civil engineering. Search a code or activity below, or copy the code for your Udyam or SPICe+ form.
This code
Division 42Group 429Class 4290Sub-class 42901
Construction and maintenance of industrial facilities such as refineries chemical plants etc.
Sub-class 42901 · Class 4290 · Group 429 · Division 42 · Section F, NIC 2008
The code
Where the code sits in the National Industrial Classification 2008, from section to sub-class, in the official wording.
429015 digits: 42 + 9 + 0 + 1NIC 2025 · Notice dated 16 October 2026
On 18 November 2025 the Ministry of Statistics and Programme Implementation released NIC 2025, which uses 6-digit codes aligned with the UN's ISIC Revision 5. This page shows the NIC 2008 code 42901. The matching NIC 2025 code will be added here once it is mapped from MoSPI's official concordance.
How to read it
An NIC code is built in layers. Each digit narrows the one before it: the division, the group, the class, and finally the 5-digit sub-class. Divisions themselves are grouped under lettered sections.
The broadest numbered layer. Division 42 covers civil engineering. It sits in section F, construction.
Construction of other civil engineering projects.
Construction of other civil engineering projects. The official note for this class is quoted below.
Construction and maintenance of industrial facilities such as refineries chemical plants etc. The full 5-digit code you enter where a form asks for the business activity by NIC code.
What it covers
42901 is a sub-class of class 4290, construction of other civil engineering projects. The NIC 2008 document explains the class in the note below, quoted exactly.
This class excludes:
- - project management activities related to civil engineering works, see 7110
Where you use it
Two registration forms ask for the business activity by NIC code. This is where 42901 is entered.
The MSME registration asks for the business activity by NIC code. For construction and maintenance of industrial facilities such as refineries chemical plants etc., that activity is 42901.
The company incorporation form asks for the main industrial activity of the proposed company by NIC code.
Not GST. GST registration does not use NIC codes; goods and services there are classified by HSN and SAC codes.
Choosing the right code
42901 is for construction and maintenance of industrial facilities such as refineries chemical plants etc. The codes below sit closest to it in NIC 2008: the other sub-classes of class 4290. Each has its own page with the official wording.
42902Class 4290 · another sub-class of the same class42903Class 4290 · another sub-class of the same class42904Class 4290 · another sub-class of the same class42909Class 4290 · another sub-class of the same classClass 4290 has 5 sub-classes in NIC 2008, including 42901.
Questions
Construction and maintenance of industrial facilities such as refineries chemical plants etc., in the National Industrial Classification 2008. It is a sub-class of class 4290, construction of other civil engineering projects.
Class 4290, construction of other civil engineering projects, has 5 sub-classes in NIC 2008. Besides 42901, they are: 42902 (Construction of waterways, harbours and river works, dredging of waterways); 42903 (Construction of dams etc.); 42904 (Construction of outdoor sports facilities); 42909 (Other civil engineering projects n.e.c.).
In Udyam Registration, which asks for the business activity by NIC code, and in the SPICe+ company incorporation form, which asks for the main industrial activity by NIC code. GST registration does not use NIC codes.
About this page
The section, division, group, class and sub-class on this page, and the explanatory note for class 4290, are taken word for word from the official document “National Industrial Classification (All Economic Activities) 2008”, Central Statistical Organisation, Ministry of Statistics and Programme Implementation, Government of India.
This is reference information on the classification of a business activity. It is not advice on which code your own business should declare, and the official NIC document prevails if the two ever differ. A change in the classification, including the MoSPI concordance to NIC 2025, re-opens this page for checking.
Not sure which code fits your activity, or spotted a mismatch? Use the WhatsApp button on this page and tell us what the business sells and how.