Welcome to Purohit Pipes Industries

ISO Certified

Quality Assurance

Traceable material, inspected in process, tested before despatch and documented in full — the quality maintenance cell tests every product on several scales before it is released.

2019

ISO Certified Since Establishment

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Inspection Stages

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Tests & Checks

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Documented Despatches

Finished components undergoing final quality check
ISO Certified quality
management system
Our Commitment

Reliable Quality at an Affordable Cost

Our mission is to supply reliable quality at affordable cost, to cater to the needs of the nation. That is not a slogan we keep for the brochure — it is the reason the quality maintenance cell has the authority to hold a consignment, whatever the despatch date says.

We own a state-of-the-art manufacturing unit equipped with modern machinery and cutting-edge technology, and we manufacture our complete range there using superb quality raw materials. Our competent quality maintenance cell tests our products on several scales, and our highly experienced engineers and supporting staff are equipped to ensure the successful execution of every project and contract.

  • Traceability: Every item traceable to its heat number and mill certificate.
  • Independence: Inspection is signed by the quality cell, not by production.
  • Improvement: We endeavour to continually improve through group efforts.
How It Works

Five Stages, Every Order

Quality is checked as the work moves, not discovered at the end when correcting it is most expensive.

Raw Material Control

Material is accepted only against its mill test certificate, PMI verified where the grade matters, and stored by heat.

In-Process Inspection

Dimensions, fit-up, weld preparation and interpass conditions are checked at the bench while they can still be corrected.

Non-Destructive Testing

MPI, dye penetrant, ultrasonic and radiographic examination to the extent set out in the inspection and test plan.

Final & Pressure Testing

Dimensional check, hydrostatic or pneumatic test, valve shell and seat testing, and surface and coating inspection.

Documentation & Release

The document package is compiled and the item is released for packing — never the other way round.

Testing

Tests We Carry Out

In-house where we have the equipment, at accredited laboratories where the standard requires it.

Swipe the table sideways to see all columns.

Test What It Proves Applied To Where
PMI (Positive Material Identification)The alloy supplied is the alloy specifiedAlloy & stainless itemsIn-house
MPI (Magnetic Particle Inspection)Surface and near-surface cracks in ferritic steelWelds, forgings, machined partsIn-house
Dye Penetrant (DP)Surface-breaking defects on non-magnetic materialStainless welds and castingsIn-house
Ultrasonic Testing (UT)Internal flaws and remaining wall thicknessPlate, forgings, butt weldsIn-house / accredited lab
Radiography (RT)Internal weld soundness on a permanent recordPressure-retaining butt weldsAccredited agency
Hydrostatic TestLeak tightness and strength under pressureSpools, valves, vesselsIn-house
Seat & Shell TestValve closure and body integrityAll valvesIn-house
Dimensional InspectionConformance to the drawingEvery manufactured itemIn-house
Hardness TestingHeat treatment achieved the intended conditionHeat treated parts, PWHT weldsIn-house
Mechanical & Chemical AnalysisTensile, yield, elongation, impact and compositionMaterial lots on requestAccredited lab

The inspection and test plan for your order fixes which of these apply, at what extent and at which hold points.

Documentation

What Travels With the Consignment

A part without its paperwork cannot be used on a coded job — so the paperwork is part of the product.

Mill Test Certificates

EN 10204 3.1 certificates for the material used, correlated to the heat number marked on each item.

Inspection & Test Reports

NDT reports, pressure test records, dimensional reports and hardness results, signed and dated.

Heat Treatment Charts

Time and temperature charts for normalising, quenching, tempering and post-weld heat treatment.

Welding Documentation

Qualified welding procedures, welder qualification records and the weld map for the assembly.

Coating Records

Surface preparation grade, paint system, and dry film thickness readings across the coated surface.

Packing List & Marking

Item-wise packing list with marks, weights and dimensions matching the case markings on every crate.

Standards

Codes & Standards We Work To

Named on the order, followed in the shop, referenced on the certificate.

ASME B31.1 ASME B31.3 ASME Section VIII Div 1 ASME Section IX ASME B16.5 ASME B16.9 ASME B16.25 ASME B16.47 API 598 API 6D NACE MR0175 TEMA IS 2062 IS 2825 IS 800 AWS D1.1 EN 10204 3.1 ISO 9001 Principles
In Practice

What Our Quality System Prevents

Wrong Grade Reaching the Line
Leaks at First Pressurisation
Rejection at Client Inspection
Rework and Site Delay
Missing or Untraceable Certificates
Premature Failure in Service
Repeat Failures From the Same Cause
Safety Incidents on Live Plant
Questions

Quality Questions We Are Asked

Yes, and we encourage it on critical orders. Nominate the agency and the hold points in the inspection and test plan, and we will offer the item for inspection at each of them before moving to the next operation.

Positive material identification reads the actual alloy content of a finished part with a handheld analyser. Two pipes of different grades can look identical in the rack; PMI is what proves which one you are about to weld into a high-temperature line.

Yes. EN 10204 3.1 mill test certificates are issued with every despatch as standard. Where a 3.2 certificate countersigned by an independent inspector is required, that is arranged at the time of ordering.

The heat number is hard-stamped or paint-marked onto each piece before it is separated from the parent material. A piece that loses its identity is quarantined and re-tested rather than being guessed at.

The item is held and a non-conformance report is raised. Repair, rework, downgrade or rejection is then decided — with your concurrence where the deviation would reach you — and the corrective action is recorded so the same cause does not repeat on the next batch.

Send us your inspection and test plan

We will confirm what we can perform in-house, what goes to an accredited laboratory, and where your hold points fall.