Guides
Weight of one sariya bundle
One bundle of 8 mm sariya comes to about 47.4 kg, and one of 12 mm to about 53.35 kg, on the tie Shyam Steel prints for its own 12 metre bar. No rule fixes how many pieces a mill binds together, so the tag on the bundle is what turns these figures into your figure.
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A bundle's weight is a short multiplication: pieces in the tie, times one 12 metre piece of that diameter. The piece half is steel and does not move. It comes off the sariya weight chart and is checked there against the nominal mass IS 1786 prints. The pieces half is the mill's own packing choice, and the one maker that prints its tie is Shyam Steel, whose counts the rods per bundle guide sets out size by size. Multiply the two and you get the bundles below.
Another mill may bind more pieces or fewer into the same diameter and be perfectly in order, because a bundle is packing, not a standard. So read the tag on the load, count the ends if the tag is silent, and let the weighbridge give the final answer where the bill runs on weight. Brands move too: no one brand keeps every diameter standing every morning, so the size and the brand go together on the call.
Size by size
One bundle on the scale, 8 mm to 32 mm
Shyam Steel's printed tie, the bundle it multiplies out to, and the window IS 1786's batch tolerance draws around it.
Scroll the table sideways to see every column
| Diameter | Pieces in the tieShyam Steel, 12 m bar | One bundlekg, worked out | Lightestkg, about | Heaviestkg, about |
|---|---|---|---|---|
| 8 mm | 10 | 47.40 | 44 | 51 |
| 10 mm | 7 | 51.80 | 48 | 55 |
| 12 mm | 5 | 53.35 | 51 | 56 |
| 16 mm | 3 | 56.88 | 54 | 60 |
| 20 mm | 2 | 59.26 | 57 | 61 |
| 25 mm | 1 | 46.30 | 45 | 48 |
| 28 mm | 1 | 58.08 | 56 | 60 |
| 32 mm | 1 | 75.85 | 74 | 78 |
The bundle column is Shyam Steel's count times the piece weight the sariya weight chart carries, so it is one mill's bundle and no other's. The last two columns widen it by the batch tolerance IS 1786 sets on nominal mass, 7 percent either way up to 10 mm, 5 percent over 10 up to 16 mm and 3 percent above 16 mm, rounded to the kilogram. One bundle is smaller than the batch those bands are written for, so use the window as a sense check and the weighbridge for the bill. 5.5 mm and 6 mm have no printed tie from any maker, so the table starts at 8 mm, and both small sizes sit on the rods per bundle guide.
Read it down
Why every bundle lands near half a quintal
Run down the bundle column from 8 mm to 20 mm and the weights crowd into one band, roughly 47 to 59 kg, while the pieces fall from ten to two. The thicker the bar, the fewer go into the tie, and the bundle stays about the same lift, within a few kilos of 50 kg, which is half a quintal. From 25 mm up the tie is a single rod, so bundle weight and piece weight become one number, 46.3 kg at 25 mm rising to 75.85 kg at 32 mm.
The band is Shyam Steel's band. A mill that binds twelve pieces of 8 mm sends a 57 kg bundle and breaks nothing, since there is no count to break. The window in the table moves with the tie. The piece weight under it never does.
At the vehicle
Checking a bundle without opening it
Count the ends. Every piece shows its cut face at the head of the bundle, so the tie can be counted with the strap still on. Count times piece weight should sit inside the table's window: a five piece bundle of 12 mm belongs between about 51 and 56 kg, and a slip far outside that range is the moment to count again, weigh again, or ring us before the vehicle moves.
The sums scale without changing shape. Four bundles of 12 mm are about 213 kg. A tonne of 12 mm is a little under nineteen bundles of five. And a broken tie is no fault: a counted order is bound to your number before it leaves, whatever the mill sent.
At this counter
The unit is yours to pick
Some sizes sell by the piece and some by the kilo, by grade and by how the brand is moving that week. The bundle is only how the steel arrives, so order in whichever unit your mason gave you: full bundles, a counted number of pieces, or kilos. The rate comes in words on the phone, on the same basis you name.
Delivery runs out of the Saharsa godown across Saharsa, Supaul and Madhepura. Say the diameter and the unit, and the tie standing today, its weight and the day's rate come back before the vehicle is promised.
Sources
One mill's tie, one standard's tolerance
Shyam Steel prints the count these bundles are multiplied from. IS 1786 supplies the piece weight and the tolerance window around it.
- BIS product manual for IS 1786, the mass basis and tolerance the windows are drawn fromBureau of Indian Standards
- The BIS record for IS 1786:2008, whose amendments leave the mass basis untouched in this rangeBureau of Indian Standards
- Shyam Steel's page printing pieces per bundle beside its own bar weightsShyam Steel
Questions
Bundle ke wazan ke sawal
1 bundle sariya ka weight kitna hota hai?
It depends on the diameter: about 47.4 kg at 8 mm, 51.8 kg at 10 mm, 53.35 kg at 12 mm, 56.88 kg at 16 mm and 59.26 kg at 20 mm, on Shyam Steel's printed tie. From 25 mm up a bundle is one rod, 46.3 to 75.85 kg. Another mill's tie can differ, so the tag decides.
8mm ke bundle ka wazan kitna hota hai?
About 47.4 kg where the tie is ten pieces of 4.74 kg each. IS 1786's batch band at 8 mm is 7 percent either way, so an honest bundle can read anywhere from about 44 to 51 kg on the scale. A different count changes it in steps of 4.74.
16mm ya 20mm ka bundle kitne kg ka hota hai?
About 56.88 kg at 16 mm, three pieces of 18.96 kg, and about 59.26 kg at 20 mm, two pieces of 29.63 kg, on the printed tie. The tolerance windows are roughly 54 to 60 and 57 to 61 kg. Count the ends before weighing if the tag names no count.
Sariya bundle ko aadha quintal kyon bola jata hai?
Because the sums land there: every tie from 8 mm to 20 mm works out within a few kilos of 50 kg, which is half a quintal. The mills bind fewer pieces as the bar thickens, so the weight stays in that band while the count changes. It is a good rough figure and a poor bill, so weigh whatever is billed by weight.
Har mill ke bundle ka wazan same hota hai kya?
No. The piece weight is the same everywhere, because IS 1786 fixes the mass per metre, but the count in the tie is each mill's own packing, and only Shyam Steel prints one. The same size from two mills can arrive as two honest, different bundles. Call +91 6202 967 218 and we say what today's tie is.
Before you order
Nail down the bundle on the phone
Four short answers, and the bundle stops being a guess.
Bundles, counted pieces, or kilos?
The mill decides a bundle. You decide the other two. Name the unit your estimate was made in.
What is the tie on today's stock of this size?
It changes load to load. We read it off the bundle standing in the godown, not off any mill's leaflet.
Weighbridge slip with the load, yes or no?
Where the bill runs on weight, the slip is the proof both sides keep. Ask before dispatch, not after.
Does the mill's strap need to stay unbroken?
A counted order breaks the tie. If the job wants factory bundles untouched, say so and they load whole.
Contact
The tag decides, the phone confirms
Ring +91 6202 967 218 with the diameter and say whether your estimate is in bundles, pieces or kilos. The tie standing in the godown, the weight it should put on the weighbridge and the day's rate on your basis all come back in the one call.
Shop hours: All 7 days, 9:30 AM to 6:00 PM