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Naavbharat Design Sheet 05, Manufacturing draft All 14 drafts Get this design

Every lot is measured three times before it leaves Vatva

Material is checked when it arrives, parts are checked on the machine, and the finished lot goes to a temperature-controlled CMM room. You get the reports with the invoice, not on request.

Quality engineer logging measurements at a test bench
First-pass yield
99.2%all part numbers
Customer PPM
38rejects per million shipped
On-time delivery
97.4%against confirmed date
CMM reports
1,200per month
NCR closure
3.2 daysaverage, 12 raised, 12 closed

The inspection route

Three stations, in this order, for every part number. Each station produces a record you can ask for by heat number or serial.

  1. 1Incoming material
  2. 2In-process
  3. 3CMM final inspection

Incoming material

Bar and sheet are quarantined at the east dock until the mill certificate is checked against a spectro reading and a hardness test from the same heat.

Checked
Chemistry, hardness, size, surface
Instruments
Optical emission spectrometer, Rockwell tester
Sampling
Every heat number, 3 readings
You receive
EN 10204 3.1 certificate with our verification
ReportIMR-26-0418
MaterialEN24T bar Ø60
Heat no.H-72291
Date14 Mar 2026
ElementSpec minSpec maxMill certOur readingResult
C %0.360.440.400.41OK
Mn %0.450.700.580.57OK
Cr %1.001.401.181.20OK
Ni %1.301.701.491.47OK
Mo %0.200.350.260.27OK
Hardness HB248302277281OK
Inspected by K. Solanki, released by R. DesaiHeat released to store

In-process

The first part off every set-up is measured before the batch runs. After that, the operator checks critical diameters on a fixed schedule and plots them, so drift is caught at the machine and not at the end.

Checked
First-off full layout, then critical features
Instruments
Air gauges, digital micrometers, bore gauges
Sampling
5 parts every hour on critical features
You receive
SPC chart and Cpk for each critical feature
PartXYZ-FB-2207 rev C
FeatureSpigot Ø35 ±0.005
MachineLathe L-07
Cpk1.71
TimeSample meanRangePosition in toleranceOperator
07:00 first-off35.0011—A. Parmar
08:0035.00080.0016A. Parmar
09:0035.00140.0012A. Parmar
10:0035.00190.0015A. Parmar
10:20 offset −0.00235.00030.0010S. Qureshi
Tool offset applied at 10:20 when the mean crossed +0.0018Shaded band = ±0.005 mm

CMM final inspection

Finished parts rest 2 hours in the CMM room at 20 ±1 °C, then are measured against your drawing, feature by feature, using the numbered balloons from your drawing.

Checked
Every ballooned dimension and GD&T callout
Instruments
2 bridge CMMs, 1.8 µm; surface roughness tester
Sampling
AQL 0.65 level II, or 100% if your drawing says so
You receive
CMM report PDF, first article report to AS9102 on new parts
ReportCMM-26-1172
PartXYZ-FB-2207 rev C
Lot800 pcs, 13 sampled
Room20.3 °C
No.FeatureNominalTolMeasuredDevIn bandResult
1Overall length120.000±0.05120.018+0.018OK
2Flange Ø90 h790.0000 / −0.03589.984−0.016OK
3Body Ø55 g655.000−0.010 / −0.02954.981−0.019OK
4Spigot Ø3535.000±0.00535.002+0.002OK
5Bore Ø20 H720.000+0.021 / 020.009+0.009OK
6Concentricity to A0.000Ø0.0080.0041—OK
7Spigot Ra—≤ 0.8 µm0.52—OK
Worst of 13 samples shown per feature. Signed M. Iyer, QA headLot accepted, 21 Mar 2026

Certifications

Certificate numbers and dates on this draft are illustrative. On a live site each row links to the certificate PDF and the certifier's online register.

StandardCoversCertified sinceValid untilCertificate no.
ISO 9001:2015Quality management, whole plant2004Dec 2027QMS-IN-0412-XYZ
AS9100DMachined parts for aerospace interiors and ground equipment2019Sep 2028AS-IN-1907-XYZ
IATF 16949:2016Turned and pressed parts for automotive tier-12012Mar 2027IATF-0351-XYZ
ISO 14001:2015Environmental management2010Jun 2027EMS-IN-1066-XYZ
ISO 45001:2018Occupational health and safety2020Nov 2026OHS-IN-2011-XYZ

Test room

What we can test in-house, the standard we test to, and the range of the instrument.

TestStandardInstrumentRange or accuracy
Dimensional, GD&TISO 1101Bridge CMM × 21.8 µm
Surface roughnessISO 4287Stylus profilometerRa 0.008–160 µm
HardnessASTM E18Rockwell testerHRC 20–70
ChemistryASTM E415Optical emission spectrometerFe, Al, Cu bases
TensileASTM A370Universal testing machine0–200 kN
Salt sprayASTM B117Salt fog cabinet0–2,000 h
TorqueISO 6789Torque analyser0.1–1,000 N·m

Shipped with every lot

Paper in the crate, PDFs to your buyer and quality contact on the day of dispatch.

  • CMM reportEvery ballooned feature, worst sample per featurePDF
  • Material certificateEN 10204 3.1 from the mill, with our spectro checkPDF
  • First article reportAS9102 forms 1–3, on new parts and revisionsPDF, XLSX
  • PPAPLevel 3 for automotive parts, on requestPDF
  • RoHS and REACH declarationPer lot, covering coatings and platingPDF
  • Packing listHeat numbers and serials by cratePDF, paper

Audit the plant before you order

Most new buyers audit us once, either on site in Ahmedabad or by a live video walk-through from the dock to the CMM room.

  • On-site audit: book 2 weeks ahead, we arrange pick-up from AMD airport
  • Video audit: 90 minutes, your time zone, recorded for your file
Book an audit

Sheet 05 of 14, drawn by Naavbharat Design

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We redraw this draft around your plant: your machine list, tolerances, certificates and one of your own part drawings. Starter plans are ready in three weeks.