# EquipFlow OS - Industrial Engineering & Workshop Operating System
> The WhatsApp-First Operating System for Industrial Repair Facilities & Machinery Dealers across the GCC and Global Corridors.

## Core Calculators & Duty Sizing Engines
- [/calculators/centrifugal-pump-head-loss-calculator](https://equipflow.io/calculators/centrifugal-pump-head-loss-calculator): Centrifugal pump total dynamic head (TDH), Hazen-Williams friction loss, fluid line velocity, hydraulic water power, and shaft/motor kW sizing with 15% NEMA/IEC safety margins.
- [/calculators/diesel-generator-kva-load-sizing](https://equipflow.io/calculators/diesel-generator-kva-load-sizing): Industrial diesel generator set kVA sizing, inductive motor starting inrush current (DOL, Star-Delta, Soft Starter, VFD), high ambient thermal de-rating (up to 55°C), and hourly diesel fuel burn curves (L/hr).
- [/calculators/electric-motor-rewinding-wire-gauge-turns](https://equipflow.io/calculators/electric-motor-rewinding-wire-gauge-turns): Stator rewinding turns-per-coil recalculator, voltage & frequency conversion (380V to 415V, 50Hz to 60Hz), and SWG/AWG parallel flexible wire substitutions.
- [/calculators/pump-affinity-laws-impeller-trimming](https://equipflow.io/calculators/pump-affinity-laws-impeller-trimming): Machine shop lathe turn-down diameter, tool cross-slide cut depth per side (ΔR), flow/head reduction, and cubic motor power savings using Affinity Laws.
- [/calculators/belt-pulley-rpm-ratio-v-belt-length](https://equipflow.io/calculators/belt-pulley-rpm-ratio-v-belt-length): V-Belt pitch length, speed reduction ratios, driven RPM, small pulley arc of contact, pitch line velocity, and standard ISO belt codes (SPZ, SPA, SPB, SPC, A, B, C, D).
- [/calculators/air-compressor-cfm-to-kw-converter](https://equipflow.io/calculators/air-compressor-cfm-to-kw-converter): Free Air Delivery (FAD CFM to m³/min) to electric motor shaft kW, ASME receiver tank sizing (Liters/Gallons), pipe velocity header sizing, and annual electricity cost modeling.

## Industrial Part Cross-Reference & Equivalent Database
- [/cross-reference](https://equipflow.io/cross-reference): Instant interchangeable part lookup tables:
  - Mechanical Seals: Burgmann MG1/MG12/MG13 <-> John Crane 21/2100 <-> Grundfos HQQE 22mm/28mm <-> KSB Meganorm.
  - Industrial Bearings: SKF <-> FAG <-> NSK <-> NTN <-> Timken C3/C4 internal radial clearance lookup.
  - Heavy-Duty Engine Filters: Fleetguard <-> Donaldson <-> Baldwin <-> Caterpillar/Cummins/Perkins OEM part numbers.

## Workshop OS Architecture (4-Stage Industrial Workflow)
1. Inward Digital Gate Pass: Intake photography and initial symptom logging.
2. Teardown Photo Failure Report: Multilingual Voice-to-Job-Card (Whisper + 120B AI model in Urdu, Hindi, Arabic, English) with 1-Tap Client WhatsApp Approval.
3. Overhaul & Test Bench Certificate: Megger insulation resistance (MΩ), shaft runout tolerances (±0.02mm), and vibration ISO balance grades.
4. Outward Delivery Gate Pass + Metallic QR Asset Activation: Weatherproof Zebra Z-Ultimate / laser-etched aluminum tags with automated 90/180-day preventive maintenance (PM) WhatsApp alerts.

## Machinery Inventory & Dealer Suite
- Refurbished yard stock inventory with 1-page WhatsApp spec brochures.
- Public dealer web catalog with rich Schema.org Product and TechArticle metadata.