North-west Delhi's metal belt — rolling, pickling, annealing and steel processing. Instruments built for heat, scale and acid, not for an office.
Wazirpur and Lawrence Road are Delhi's metal belt. Rolling mills, pickling lines, annealing furnaces, wire drawing and utensil manufacture sit close together, and the working conditions here are harder on an instrument than anywhere else in the city.
Three things are constantly at work: heat from furnaces and annealing, acid vapour from pickling, and scale and mill dust from rolling. Any one of them will finish an instrument that was chosen for a clean plant room. Together, they are why a great many mills here simply run without measurement and accept the scrap.
That is a false economy, and it shows up in fuel. A furnace running 40 °C hotter than it needs to, because nobody trusts the reading, burns money every shift. The instrument that fixes that is not expensive; it just has to be built for the environment.
Thermocouple drift in annealing furnaces. Base metal thermocouples drift steadily at temperature, and on a furnace running daily they can be tens of degrees out within months. Correct sheath and protection tube selection, and a calibration schedule, are what keep a furnace honest.
Acid vapour in the panel. Pickling lines put hydrochloric and sulphuric vapour into the air. It attacks panel electronics, gauge cases and terminations. Instruments here need the case material and ingress protection chosen deliberately, and panels need to be sealed properly rather than left with a cable entry gaping.
Bath level and concentration guessed rather than measured. Pickling and plating baths run on judgement in many units. A level switch and a properly sealed gauge cost less than one batch of over-pickled sheet.
Steam gauges without siphons. Almost every unit here has a boiler for process heat. A gauge mounted straight on live steam drifts and then fails, and it is a safety fitting as much as an operating one.
Base and noble metal thermocouples with the correct sheath and protection tube, multi-channel scanners putting every zone on one time base, and alarm annunciation.
Steam gauges with siphons and isolation valves, glycerine-filled hydraulic gauges for mill stands and power packs, temperature transmitters and panel indicators.
Diaphragm seal gauges with acid-suited wetted materials, tank level switches, and case materials and ingress protection chosen for acid vapour.
Die and bath temperature control, hydraulic and cooling circuit gauges, and simple recording where a customer asks for evidence.
For furnaces and annealing: base metal and noble metal thermocouples with the correct sheath, ceramic and metal protection tubes, multi-channel scanners so every zone is on one time base, and alarm annunciation.
For rolling mills and utilities: steam gauges with siphons and isolation valves, hydraulic gauges with glycerine filling for mill stands and power packs, temperature transmitters and panel indicators.
For pickling and plating lines: diaphragm seal gauges with wetted materials suited to acid service, level switches for tanks, and instruments with case materials and ingress protection chosen for acid vapour rather than a clean plant room.
For wire drawing and processing: temperature controllers for dies and baths, pressure gauges on hydraulic and cooling circuits, and simple recording where a customer asks for evidence.
Steel and utensil output is heavy, sharp and awkward, and it needs strapping rather than taping. Semi-automatic and fully automatic PP strapping machines handle bundles, coils and cartons, and the strap tension setting matters more here than on light goods — too tight and thin sheet deforms, too loose and the bundle opens in transit.
For utensil and sheet metal units despatching in cartons, carton sealers and box wrapping machines with a top press are the practical answer. Hand pallet trucks with adequate capacity handle the weight.
We quote strap and consumables with the machine, and we hold sealing elements and wear parts against your original order reference — which matters in a belt where a stopped packing bench stops the despatch.
Semi-automatic and fully automatic PP strapping sized on bundles per shift, with strap tension set at commissioning so thin sheet is not deformed.
For utensil and sheet metal units despatching in cartons — semi-automatic where sizes are fixed, random where they are not.
Box wrapping with top press for palletised metal output, and hand pallet trucks with capacity for the weight this belt actually moves.
Sealing elements and wear parts stocked against your original order reference, because a stopped packing bench stops the despatch.
Commissioning a new furnace or line? Send the furnace drawing or the process description. We will specify the thermocouple type, sheath and protection tube for the temperature and atmosphere, size the scanner or controller, and supply it with calibration certificates.
Running a mill that has been here for decades? That describes most of Wazirpur. The usual first step is calibration rather than replacement — we check what you have, tell you how far it has drifted, and replace only what genuinely needs it. On a furnace, correcting a drifted reading often pays for the whole visit in fuel.
The same engineers do both, and they will tell you when an instrument does not need changing.
The packing and sealing machinery mentioned above has its own pages, written around the machine rather than the area. If that is the part you are working on, start there.
Strapping for steel bundlesAll packing & sealingThe type and the sheath both matter. For most annealing and heat treatment, a correctly sheathed base metal thermocouple with the right protection tube, on a calibration schedule, holds well. Above about 1200 °C, or where drift is critical, a noble metal thermocouple in a ceramic sheath is the honest answer.
Acid vapour. It attacks gauge cases, panel electronics and terminations. The fix is choosing the case material and ingress protection for the environment, sealing panel entries properly, and using diaphragm seals with wetted materials suited to the bath rather than plain Bourdon tubes.
Yes, of any make, on site. On a furnace this is often the most valuable thing we do — a reading that has drifted 30 or 40 degrees is burning fuel every shift, and correcting it usually pays for the visit.
Yes. Eight and sixteen channel scanners put every zone on one display and one time base, which is what you need to see whether one zone is lagging the others during a cycle.
A semi-automatic or fully automatic PP strapping machine, chosen on bundles per shift. Strap tension setting matters here — too tight deforms thin sheet, too loose and the bundle opens in transit. We set it at commissioning.
Yes, and we would recommend them as standard on any boiler line. A gauge mounted directly on live steam drifts and then fails; the siphon holds a plug of condensate and prevents it. It costs a fraction of the gauge.
Yes, next working day from our Faridabad works for stock items ordered before 4 PM.
Send a photograph of the nameplate, a tag list, or simply tell us the duty. Our engineer will size it and quote it.
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