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If you run a foundry or import castings, the days of flying under the radar are over. The Government of India has slapped a Quality Control Order (QCO) on Grey Iron Castings. This means if your product doesn't have ISI Mark under IS 210:2009 you cannot manufacture, sell or import it in India
This isn’t about "raising standards" anymore it’s about staying in business. If you get caught without the license you face stop-production orders and hefty fines
IS 210:2009 is the rulebook for Grey Iron Castings. These are used in everything from engine blocks and flywheels to manhole covers and machine bases.
The "Grey" refers to the color of the fracture caused by graphite flakes in the metal structure. This standard ensures that your casting isn't just a shaped lump of iron but a material with guaranteed strength and durability
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The standard doesn't just say "make it strong." It classifies castings into seven specific grades based on their Tensile Strength. You cannot just apply for "Grey Iron" you must apply for the specific grade you manufacture.
Here is the cheat sheet for the grades and their minimum strength requirements:
| Grade | Minimum Tensile Strength (MPa) | Typical Application |
|---|---|---|
| FG 150 | 150 | Low load parts, manhole covers, weights |
| FG 200 | 200 | Machine bases, general machinery parts |
| FG 220 | 220 | Brackets, frames, flywheels |
| FG 260 | 260 | Heavy duty machinery, gears, cylinder blocks |
| FG 300 | 300 | High pressure valves, pump bodies |
| FG 350 | 350 | Dies, high stress components |
| FG 400 | 400 | Heavy duty gears, camshafts (Specialized) |
Note: The number in the grade (e.g., 200) stands for the minimum Tensile Strength in MegaPascals (MPa).
To get your license BIS officials will visit your factory and pull samples. They will watch you test them, and then send sealed samples to an external lab. If you fail any of these your application is rejected
This is the primary test. A standardized test bar is pulled until it snaps. It must meet the minimum MPa value of the grade you claimed
While tensile strength is king, the customer often demands a specific hardness to ensure machinability. The standard specifies hardness ranges typical for each grade
Surprisingly, IS 210 is flexible here. It leaves the "recipe" (Carbon, Silicon, Manganese) largely up to you. However you strictly must control Phosphorus and Sulfur if specified by the buyer. High sulfur makes it brittle high phosphorus kills machinability
If you are making pipes or valves your casting must not leak under pressure. This is mandatory for pressure-tight parts
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Do not try to game the system. The process is rigid.
You must have a Universal Testing Machine (UTM) and a Brinell Hardness Tester in your factory. They must be calibrated. No lab equipment = No license.
Submit Form V on the BIS MANAK Online portal. You will need to upload your factory layout and machine list.
A BIS officer will physically inspect your foundry. They aren't looking at the walls; they are checking your Process Control. Do you record the temperature of the molten metal? Do you test every ladle? If your records are blank, you fail.
The officer will seal samples from your production line and send them to a BIS-recognized lab. This takes about 2-4 weeks.
If your factory audit is clean and the independent lab report passes, you get the license (CM/L number). You must now mark every casting with the ISI logo.
Gather these before you start. Missing paperwork is the #1 reason for delays.
The "Cast Iron Products (Quality Control) Order" is law.
If you are caught manufacturing without a license the Bureau of Indian Standards Act 2016 allows for imprisonment up to two years or a fine of at least ₹2 Lakhs (often much higher)
Don't view IS 210 registration as just a certificate to hang on the wall. It is a gatekeeper. It filters out the backyard foundries that melt scrap without quality control. If you are a serious player, this license proves your metal—literally. Get in touch with Agile Regulatory to get your lab ready, standardize your mix and apply.
Nishi Chawla
08 May, 2026
Nishi Chawla
08 May, 2026
Nishi Chawla
07 May, 2026
Nishi Chawla
07 May, 2026
Nishi Chawla
07 May, 2026
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