White Paper on Every kilo of ferro-alloy is dosed against the mass of the bath So weigh the bath don’t estimate it
Every kilo of ferro-alloy
is dosed against the
mass of the bath.
So weigh the bath – don’t estimate it.
The alloy addition is calculated from the steel in the ladle — measured, or assumed.
At the ladle furnace, the recipe is arithmetic. The kilograms of ferro-manganese, ferro-silicon, silico-manganese, ferro-chrome and the noble alloys you add to bring a heat to grade are calculated from one number: the mass of liquid steel in the ladle. Get that mass wrong and the entire dose is wrong before the alloy ever hits the bath.
Most shops run the primary furnace as a melter and adjust the final chemistry in the ladle after tapping — it is the cost-efficient way to make graded steel. Between 60 and 90 percent of all ferroalloy additions are made to the ladle during tapping, which makes the tapped-ladle steel mass the basis for the dose. Yet that mass is frequently not weighed. It is taken as a nominal heat size — “call it a 150-tonne heat” — when the true tapped mass varies from heat to heat with furnace skull, slag carry-over and tap stream.
The dose is computed as add-kg = heat mass × target pickup ÷ expected recovery. Heat mass sits on top of that calculation, multiplying it. Feed it a nominal figure that is a few percent off the real tapped mass, and every alloy in the recipe is dosed a few percent off — linearly, every heat. On the noble alloys that error is money: ferroalloys are a major variable cost of steelmaking, and over-addition from a mis-estimated heat mass is a direct, recurring loss.
The answer is to weigh the tapped ladle where it already hangs — on the crane — and dose the alloy against that measured mass. An HSCo Wi-Fi/Bluetooth connected crane scale reads the liquid-steel mass of the tapped ladle; the metallurgist reads it on a remote display from a safe standoff off the hot ladle; and Blue Whale binds the weighed heat mass, the computed and actual alloy additions and the recovery achieved into one immutable per-heat record that trends alloy cost and recovery per tonne.
The rest of this paper explains why the alloy dose keys off the steel mass, why today that mass is a nominal guess, what the error costs at the scale of a working shift, why the answer is a crane scale rather than the alternatives a metallurgist would reach for first, what this solution is not, and what a pilot looks like.
1. The alloy is dosed against the steel in the ladle — that is the whole recipe.
Walk onto a ladle-furnace floor and the work looks like cooking, and in a sense it is. The primary furnace — electric arc or converter — is run as a melter. The real chemistry, the part that turns liquid steel into a specific grade, happens after tapping, in the ladle. There the metallurgist deoxidises the bath and trims it to composition by adding ferroalloys: ferro-manganese and ferro-silicon and silico-manganese for deoxidation and manganese, ferro-chrome for chromium, and the noble alloys for the grades that demand them.
It is cost-efficient to work this way — to operate the primary furnace as a melter and adjust the final chemical composition in the ladle after tapping. Deoxidation itself is carried out during tapping, by adding ferro-manganese, ferro-silicon and/or aluminium into the tap ladle. The alloys form oxides that are absorbed into the slag, and the bulk and trim additions bring the heat to grade. This is established practice, not novelty.
The furnace makes liquid steel. The ladle makes the grade. And the grade is made by adding kilograms of alloy calculated against the mass of steel in the ladle.
Here is the part that matters for everything that follows. The quantity of each alloy is not a fixed scoop. It is calculated — from the liquid-steel mass and the target chemistry. How much manganese the heat needs depends on how much steel there is to carry it. Between 60 and 90 percent of all ferroalloy additions are made to the ladle during tapping, which means the tapped-ladle steel mass is the number the bulk of the alloy bill is dosed against. The bath is the denominator of the recipe.
Ladle deoxidation/composition adjustment by adding ferro-manganese, ferro-silicon and aluminium during tapping, and the rationale for adjusting final chemistry in the ladle, are confirmed from Encyclopaedia Britannica (Steel: Ladle Metallurgy) and IspatGuru (Ladle Metallurgy). The 60-90% tap-addition share is from ferroalloy/steelmaking practice literature (verified).
2. The heat mass multiplies every alloy in the recipe — and recovery sits under it.
There is a working form of the dosing calculation every ladle metallurgist carries in their head, whether or not it is written down this cleanly:
add-kg = heat mass × target pickup ÷ expected recovery
Read it left to right. The heat mass is how many tonnes of steel are in the ladle. The target pickup is how much of each element the grade needs — so many points of manganese, of silicon, of chromium. The expected recovery is the fraction of the alloy that actually ends up in the steel rather than lost to slag or fume. Multiply the mass by the pickup, divide by the recovery, and you get the kilograms to charge. The same form runs for every alloy in the recipe.
Notice where the heat mass sits. It is the leading multiplier. It does not affect one alloy — it scales all of them, linearly and at once. If the mass you feed the calculation is two percent high, every alloy in the recipe is dosed two percent high. The error does not average out across the recipe; it stacks across it. This is the same structural truth as a converter charge keyed off hot-metal mass — one input, many decisions — but here the decisions are the most expensive consumable on the floor.
The denominator deserves a word too. Recovery is not a constant. The recovery of ferroalloy is a function of the dissolution rate of the alloy, the density of the alloy, and the dissolved oxygen in the liquid steel. Dissolution rate is the single most important property; an ideal ferroalloy density of 6.2 to 7.6 grams per cubic centimetre lets the alloy sink and dissolve rather than float and burn; and increasing dissolved oxygen lowers recovery, with oxidation the chief cause of poor and erratic recovery. Ferro-manganese, which sinks and dissolves readily, recovers at typically over 95 percent; lighter or more reactive alloys, less.
The heat mass is not one input among many. It is the multiplier on top of every alloy in the recipe. Get it wrong and you get all of them wrong, in the same direction, every heat.
Recovery = f(dissolution rate, density, dissolved O₂), density band 6.2-7.6 g/cc, and oxidation as the chief cause of poor recovery are verified verbatim from IspatGuru, ‘Utilization Optimization of Ferroalloys during Steelmaking’ (2020). The >95% FeMn recovery is a directional industry figure. The dosing form add-kg = mass × pickup ÷ recovery is standard-practice inference from the recovery basis plus the mass dependence — not a verbatim sourced equation.
3. Today that mass is a nominal heat size — not a weight of the steel you tapped.
Here is where the chain breaks. The mass the recipe needs is the mass of liquid steel actually in this ladle, on this heat. But in many shops that mass is never weighed. It is taken as a nominal figure — the furnace is “a 150-tonne heat,” so 150 tonnes goes into the calculation, heat after heat, as if the tapped mass were a constant.
It is not a constant. The true tapped mass swings from heat to heat for reasons every melter knows:
Knowledge of the tap weight is exactly what lets an operator make accurate alloy-addition calculations — the steelmaking literature is explicit that the tap weight facilitates accurate scrap-charge and alloy-addition calculations. Without it, the dose is keyed to a label rather than to the steel. And because 60 to 90 percent of the alloy is added at tap, the moment of tapping is precisely the moment the true mass is both most needed and, traditionally, least measured.
“A 150-tonne heat” is a name, not a measurement. The recipe needs the mass of the steel actually in the ladle — and that number changes every heat.
This is not a competence failure. It is a measurement gap. The tapped ladle is hot, hanging from a crane, and unapproachable, so its mass goes un-weighed — and the alloy calculation falls back on a nominal figure. The fix is not to guess the heat size more carefully. It is to weigh the steel that is actually on the hook.
The tap-weight dependence (‘knowledge of the tap weight can facilitate accurate scrap-charge and alloy-addition calculations’) is verified from the Nupro/US patent on furnace-tapping weight prediction (2016) and Britannica/IspatGuru ladle metallurgy. Skull, slag carry-over and charge variation as causes of heat-to-heat mass swing are standard melt-shop practice.
4. A few percent of guessed mass is lakhs of rupees of alloy across a shift.
Why does this matter now, in rupee terms? Because ferroalloys are not a rounding error on the cost sheet. One of the substantial costs during the steelmaking operation is the addition of the ferroalloys — they are a major cost-contributing factor in the process. Raw materials as a whole — scrap and ore, coke, alloys and fluxes — run to roughly 55 to 65 percent of total steelmaking cost, and on a graded or alloy heat the ferroalloys, especially the noble ones, are a large slice of that. When the dose is keyed to a guessed mass, the error lands squarely on the most expensive consumable on the floor.
Follow the arithmetic of the dosing form. Because add-kg = heat mass × target pickup ÷ expected recovery, a heat mass that is high by a given percentage over-doses every alloy by that same percentage. The over-added alloy that lands in the steel either pushes the chemistry past the target — risking a re-process — or simply costs money the grade did not need. The under-added case is worse in a different way: the heat misses chemistry, the metallurgist trims again, and the heat sits on the furnace longer.
An illustrative worked example
Take a 150-tonne heat. Suppose the recipe calls for a noble-alloy pickup that works out to 1,500 kg of alloy charged, and the heat mass fed to the calculation is 3 percent high — a 4.5-tonne overestimate, well inside the heat-to-heat swing of an unweighed ladle. The alloy is over-dosed by roughly 3 percent, about 45 kg. At an assumed alloy price of ₹250 per kilogram, that is roughly ₹11,000 of alloy burned on a single heat, before counting any re-process. Run several such heats a shift and the figure reaches lakhs of rupees across the shift — repeating, every shift, until the mass is measured.
The exact rupees are illustrative — the price, the base charge and the error are assumptions, openly stated. What is not illustrative is the shape: the loss is linear in the mass error, it lands on the costliest consumable, and it repeats every heat the mass is guessed. That is the case for measuring the one number the whole alloy bill multiplies against.
Over-add expensive alloy against a guessed mass and you do not lose it once. You lose it every heat, every shift, on the most expensive thing you charge.
Ferroalloys as a substantial/major steelmaking cost is verified from IspatGuru, ‘Utilization Optimization of Ferroalloys’ (2020). The 55-65% raw-materials cost share is an industry cost-structure estimate (illustrative). The ₹250/kg price, the 1,500 kg base charge and the mass-error percentages are assumptions for the worked example and are illustrative; no ₹/kg figure is in the verified evidence.
5. Weigh the tapped ladle where it already hangs — and dose against that mass.
The tapped ladle is already on the crane. It is already lifted, already suspended, already carrying its mass through the rigging on its way to the ladle furnace or the caster. So the simplest, safest place to measure the liquid-steel mass is the place it already is: on the hook.
An HSCo connected crane scale sits in the lifting path — as a suspended hook-mounted load weigher, or as a load pin or load cell built into the crane lift as an in-line sensing element, conformant to the OIML weighing classes. As the crane lifts the tapped ladle, the scale reads the suspended liquid-steel mass directly. No one approaches the ladle. No one changes how the crane is operated. The mass that the alloy recipe needs is read off the load the crane is already carrying.
The output is the thing the recipe was always missing: a measured liquid-steel mass, captured at the moment the alloy is dosed, available at a safe standoff and logged automatically. The alloy bill is computed against what is actually on the hook, not against the round number the heat was nicknamed.
The ladle is already on the crane. Weighing it adds no step, no approach, no exposure — it reads the load the crane is already lifting and turns it into the number the recipe multiplies against.
6. Why a wireless crane scale — and not the alternatives you would reach for first.
A ladle metallurgist has obvious instincts here, and each one fails for a concrete, physical reason. The crane scale wins not because it is novel but because it is the only option that survives a hot, crane-handled ladle whose mass is needed at the very moment of tapping.
The pattern is consistent. Every alternative either measures the wrong thing, adds a handling step you do not want with a hot ladle, or puts a human or a cable where neither should be. The connected crane scale measures the right vessel — the bath — adds no step, and delivers the reading wirelessly to a safe standoff. That is why this solution, specifically.
This paper addresses the suspended-ladle weighment as the chemistry input — distinct from in-vessel load-cell batch dosing of the alloy (the P31 case), which weighs the alloy dispensed, and from generic furnace charge weighing. The two are complementary: one measures the bath, the other the addition.
7. Bind the weighed mass, the dose and the recovery into one immutable per-heat record.
A good reading that lives only on a display is a reading you cannot defend or learn from. The alloy-cost review, the recovery analysis, the chemistry post-mortem — all of them need the weighed mass, the computed and actual additions and the recovery as a record, not a memory. So the crane-scale reading is written, automatically, into the Blue Whale wireless cloud platform, and the rest of the heat is bound to it.
Each heat becomes one entry: the weighed liquid-steel mass, time-stamped at the moment of lift, bound to the heat number; the alloy additions the recipe computed against that mass; the alloy actually charged; and the recovery achieved, back-calculated from the steel chemistry. No one keys the mass in — the number on the metallurgist’s display is the number in the record, because the same measurement produces both. The per-heat log becomes a continuous, auditable trail of what was weighed, what was dosed and what came back.
What the bound record lets you see
Once mass, dose and recovery sit in one immutable record per heat, the shop can finally trend the two numbers that matter to an alloy-cost controller — alloy cost per tonne and recovery per tonne — heat after heat, grade by grade. A drifting recovery shows up before it costs a month of over-addition. A heat dosed against a bad mass stands out against its neighbours. The data-integrity model the regulated world uses is the right benchmark to hold that log against:
- Attributable — every weighed mass and every dose is bound to a heat number, so the record says which heat and which alloy.
- Contemporaneous — the mass is logged at the moment of lift, time-stamped, not reconstructed at end of shift.
- Original & Accurate — the logged figure is the measured figure; no transcription sits between the scale and the record.
- Enduring & tamper-evident — the entry is immutable, so the alloy-cost trend and any later reconciliation read the same numbers nobody can quietly edit. Where the plant is regulated, this is where ERP/LIMS and 21 CFR Part 11-grade data-integrity binding apply.
A measured mass nobody wrote down is gone by the next heat. Bound to the heat number with its dose and recovery, it becomes the evidence the alloy-cost trend is built on.
The Blue Whale cloud/IoT platform binds weighed heat mass, computed vs actual alloy additions and recovery into one immutable per-heat record, with per-heat alloy-cost and recovery-per-tonne trending. ALCOA / 21 CFR Part 11 are a data-integrity framework of pharmaceutical/cGMP origin, cited here as a recognised benchmark for the per-heat record — not a steel-industry mandate.
8. What this is not – and what a measured mass returns.
Before the business case, the honest caveats. A crane scale on a tapped ladle is a process weighing device, and it is worth being precise about what it does and does not mean.
This is not a legal-for-trade instrument
The tapped-ladle weight is for process control — to dose the alloy and feed the recovery analysis. It is not a custody-transfer or legal-for-trade measurement, so the legal-metrology accuracy classes are a reference benchmark, not a mandate. The relevant benchmark is OIML R76-1:2006 for non-automatic weighing instruments, which defines four accuracy classes — I (special), II (high), III (medium) and IIII (ordinary). Industrial crane scales typically fall in Class III, whose number of verification scale intervals n = Max/e runs from 100 to 10,000, with maximum permissible errors in service of ±0.5e for loads up to 500e, ±1.0e from 500e to 2000e and ±1.5e from 2000e to 10,000e. These set the accuracy benchmark a process scale can be specified against.
Get the Indian standard right
One correction worth making in the open, because it is easy to get wrong: IS 1432 is the wrong designation to cite. Per the BIS Know Your Standards record, IS 1432:1959 ‘General Requirements for Weighing Instruments’ is withdrawn. In India, non-automatic weighing instruments are legally governed by the Legal Metrology (General) Rules, 2011, under the Legal Metrology Act, 2009; India is an OIML member and adopts the OIML R76 accuracy classes. The relevant BIS technical standard for electronic weighing instruments is IS 9281 (Electronic Weighing Systems, Parts 1-3), not IS 1432. We name the live framework, not the withdrawn standard.
This is not a metallurgy replacement
The crane scale does not replace your charge model, your level-2 automation, your alloy recipes or your metallurgical practice. It does one thing: it replaces an assumed heat mass with a measured one, and binds it to the dose and the recovery. The recipe gets a better input; everything else you run stays as it is. And it is complementary to alloy-side dosing on the hopper (the P31 case) — one weighs the bath, the other the addition.
The business case
The case is a chain of verified dependencies. Improve the one input every alloy in the recipe multiplies against, and the improvement propagates through everything calculated from it:
- A correctly dosed heat. Every alloy — bulk and noble — is dosed against the steel actually in the ladle, so the recipe runs on the right denominator and the chemistry lands on target the first time.
- Less alloy burned. Over-addition scales linearly with the mass error and lands on the costliest consumable; replacing a guessed mass with a measured one removes that recurring, every-heat loss on the noble alloys.
- Recovery you can see. With mass, dose and chemistry bound per heat, recovery per tonne is trended grade by grade — a drifting recovery is caught before it costs a month of silent over-addition.
- Zero approach, zero transcription, one auditable record. The reading is taken off the load the crane already carries and delivered to a safe standoff; the immutable per-heat log gives the metallurgist and any audit a defensible record of mass, dose and recovery that a memory never could.
We do not assert a rupee figure the evidence does not hold. The case is simpler: the alloy bill is multiplied by one number, and we make that one number measured instead of guessed.
At the ladle furnace, the kilograms of ferro-manganese, ferro-silicon, silico-manganese, ferro-chrome and noble alloy added to bring a heat to grade are calculated as add-kg = heat mass × target pickup ÷ expected recovery — and 60-90% of those additions are made to the ladle at tap. The heat mass is the leading multiplier, so a guessed nominal heat size over-doses every alloy linearly, burning lakhs of rupees of the costliest consumable across a shift. An HSCo Wi-Fi/Bluetooth crane scale weighs the tapped ladle as the crane lifts it, the metallurgist reads the mass on a remote display at a safe standoff off the hot ladle, and Blue Whale binds the weighed heat mass, the computed and actual alloy additions and the recovery into one immutable per-heat record that trends alloy cost and recovery per tonne. The alloy is dosed against a measured bath, not a guessed estimate — distinct from in-vessel batch dosing (P31) and from generic furnace charge weighing.
Weigh one tapped ladle on the hook. Dose the next heat against a measured mass.
Start with a ladle-furnace alloying review of one crane and one ladle line. We assess how the heat mass is set today, how far the nominal figure diverges from the steel actually tapped, and how it reaches the alloy calculation — then scope a Wi-Fi/Bluetooth connected crane scale or load pin, a remote safe-standoff display or handheld for the metallurgist, and a Blue Whale immutable per-heat record binding weighed mass, computed and actual additions and recovery, with alloy-cost and recovery-per-tonne trending. Talk to Hindustan Scale Co. and Blue Whale Technology to schedule it.
Evidence base
The figures and standards cited here are drawn from the verified evidence pack. The ladle-deoxidation and composition-adjustment practice, the dependence of the alloy dose on liquid-steel mass, and the recovery basis come from Encyclopaedia Britannica (Steel: Ladle Metallurgy), IspatGuru (Ladle Metallurgy; Utilization Optimization of Ferroalloys, 2020) and the Nupro/US tapping-weight patent, attributed as such. OIML R76-1:2006, the BIS Know Your Standards record for IS 1432:1959, and the Legal Metrology (General) Rules, 2011 are primary. The 55-65% raw-materials cost share is an industry cost-structure estimate, flagged illustrative; the rupee figures in the worked example are assumptions, openly stated and flagged illustrative — no ₹/kg figure is within the verified evidence. IS 1432:1959 is withdrawn — the live framework is OIML R76 via the Legal Metrology (General) Rules, 2011, with IS 9281 as the BIS technical standard for electronic instruments.
- Encyclopaedia Britannica — Steel: Ladle Metallurgy [SECONDARY] — Confirms ladle deoxidation/composition adjustment by adding ferro-manganese, ferro-silicon and aluminium during tapping, and the rationale for operating the primary furnace as a melter and adjusting final chemistry in the ladle after tap. britannica.com.
- IspatGuru — Utilization Optimization of Ferroalloys during Steelmaking (2020) [SECONDARY / PRIMARY TECHNICAL] — Recovery of ferroalloy = f(dissolution rate, density, dissolved O₂); dissolution rate the single most important property; ideal density 6.2-7.6 g/cc; increasing dissolved O₂ lowers recovery; oxidation the chief cause of poor/erratic recovery. Ferroalloys a substantial/major steelmaking cost. ispatguru.com.
- IspatGuru — Ladle Metallurgy [SECONDARY] — Ladle refining with ferro-manganese, ferro-silicon, silico-manganese and aluminium; ferro-alloy additions for bulk and trim chemical control; input parameters (incoming chemistry, temperature, carry-over slag). ispatguru.com.
- Nupro / US patent — Method for Tapping a Steel Making Furnace (2016) [PRIMARY] — Confirms that knowledge of the tap weight enables accurate scrap-charge and alloy-addition calculations — the mass dependence underpinning weighed-heat-mass dosing. The ~60-90% tap-addition share establishes the tapped-ladle mass as the dosing basis.
- OIML R76-1:2006 — Non-automatic weighing instruments: Metrological and technical requirements [PRIMARY] — Defines four NAWI accuracy classes I/II/III/IIII; industrial/crane scales typically Class III, with n = Max/e from 100 to 10,000 and MPE in service of ±0.5e (0-500e), ±1.0e (500-2000e) and ±1.5e (2000-10,000e). Cited as a reference accuracy benchmark for the process crane scale, not a legal-for-trade mandate. oiml.org.
- Bureau of Indian Standards — Know Your Standards (IS 1432:1959) [PRIMARY] — BIS official record confirming IS 1432:1959 ‘General Requirements for Weighing Instruments’ is WITHDRAWN; the cited designation is invalid. The relevant BIS technical standard for electronic weighing instruments is IS 9281 (Electronic Weighing Systems, Parts 1-3). services.bis.gov.in.
- Legal Metrology (General) Rules, 2011 — Govt. of India, under the Legal Metrology Act, 2009 [PRIMARY] — India’s legally operative instrument for NAWI verification, stamping and accuracy classes; India is an OIML member adopting the OIML R76 classes. The live legal framework in place of the withdrawn IS 1432.
- ScienceDirect / Britannica — Ferromanganese overview [SECONDARY] — High-carbon ferro-manganese is 70-80% Mn and 6-7% C, and is the largest-tonnage ferroalloy deoxidiser/alloying agent; FeMn used for moderate deoxidation, FeSi for stronger deoxidation. Directional FeMn ladle recovery >95%.
- Industry cost-structure estimate — raw materials share of steelmaking cost [ILLUSTRATIVE] — Raw materials (scrap/ore, coke, alloys, fluxes) as ~55-65% of total steel production cost; ferroalloys a major component. Industry cost-structure estimate, illustrative; any specific rupee over-addition loss is illustrative and not independently sourced.
This document is a strategic white paper prepared by Blue Whale Technology, a division of Hindustan Scale Co. It is provided for general information and does not constitute legal, contractual, metrological, safety or commercial advice; readers should confirm the current text and applicability of any cited standard — including OIML R76-1:2006, the Legal Metrology (General) Rules, 2011, IS 9281 and 21 CFR Part 11 — as it applies to their own plant, contracts and obligations. A crane scale weighing a tapped ladle for alloy-dose control is a process weighing device, not a legal-for-trade or custody-transfer instrument; the OIML R76 accuracy classes (industrial crane scales typically Class III, n = 100 to 10,000, MPE in service ±0.5e / ±1.0e / ±1.5e) are cited as a reference accuracy benchmark, not as a legal mandate on such a measurement. IS 1432:1959 is withdrawn per the BIS Know Your Standards record; in India non-automatic weighing instruments are governed by the Legal Metrology (General) Rules, 2011 under the Legal Metrology Act, 2009, with IS 9281 (Electronic Weighing Systems) as the relevant BIS technical standard. The dosing relation add-kg = heat mass × target pickup ÷ expected recovery is standard-practice inference from the verified recovery basis and mass dependence, not a verbatim sourced equation. The ALCOA / 21 CFR Part 11 framework is a data-integrity model of pharmaceutical/cGMP origin, cited as a recognised benchmark for the per-heat record and not as a steel-industry requirement. The 55-65% raw-materials cost share is an industry cost-structure estimate and is illustrative; the rupee figures in the worked example (an assumed ₹250/kg alloy price, a 1,500 kg base charge and the stated mass-error percentages) are assumptions for illustration only, as no ₹/kg figure is within the verified evidence. Recovery percentages (including FeMn >95%) are directional industry figures and vary with dissolved oxygen, stirring and particle size. Ferroalloy compositions, the 60-90% tap-addition share, the recovery basis and the deoxidation practice are drawn from Encyclopaedia Britannica, IspatGuru, the Nupro/US tapping-weight patent and ScienceDirect, and are attributed as such. This paper addresses the suspended-ladle weighment as the chemistry input — distinct from in-vessel load-cell batch dosing of the alloy and from generic furnace charge weighing. Third-party names (including Encyclopaedia Britannica, IspatGuru, OIML, the Bureau of Indian Standards, the Government of India and the US Food and Drug Administration) are the property of their respective owners and are referenced for factual and corroborative purposes only, without implication of endorsement. The crane-scale, remote-display and immutable per-heat-record solution is presented as a capability Blue Whale Technology can deliver and integrate, not as an existing off-the-shelf catalogue product. Hindustan Scale Co. · Mumbai, India · Established 1955. © 2026 Hindustan Scale Co. All rights reserved.