Manufacturing Process

How We Build

A Five-Stage Controlled Manufacturing Workflow

Every pressure vessel and reactor leaves the workshop through the same controlled sequence: material verification, fabrication and assembly, welding with heat treatment, inspection and pressure testing, then surface treatment and final delivery. Each stage has its own documented checks and its own release point.

Because the stages are separated, an issue found at material inspection is resolved before steel is cut, and an issue found at pressure testing is resolved before the vessel is coated and shipped. That sequence is what allows equipment to be manufactured to ASME, PED, BS EN 13445 and GB design codes.

  • Five controlled stages, each with its own release point
  • Welding performed to qualified WPS/PQR procedures
  • NDT, dimensional inspection and hydrostatic testing before delivery
  • Complete quality documentation issued with the equipment
Pressure vessel shells and fabricated components staged on the workshop floor
Process Stages

From Incoming Steel to Shipped Vessel

The five stages below follow the manufacturing process documented by the company.

  1. Raw Material Inspection 01

    Raw Material Inspection

    Material verification & incoming inspection

    Incoming steel is verified against the purchase specification before any fabrication starts, so the material grade, thickness and certificates are confirmed while the vessel is still on paper.

    • Material grade and specification verification
    • Incoming inspection of mill certificates
    • Confirmation before cutting and forming begins
  2. Fabrication & Assembly 02

    Fabrication & Assembly

    Cutting, machining, forming & assembly

    Plate is cut, machined and rolled into shells, then fitted and assembled. The shop floor is organised so forming, machining and assembly run as separate controlled operations under one crane-covered fabrication hall.

    • Cutting, machining and plate rolling
    • Shell, head and nozzle fitting during assembly
    • Dimensional control throughout fabrication
  3. Welding & Heat Treatment 03

    Welding & Heat Treatment

    Welding, WPS/PQR control & PWHT if required

    Welding is performed to qualified welding procedures under WPS/PQR control. Post-weld heat treatment is applied where the design code and material require it, and welded vessels are staged in the workshop for final assembly.

    • Welding to qualified WPS/PQR procedures
    • Post-weld heat treatment where required
    • Welded vessels staged for final assembly
  4. Inspection & Pressure Testing 04

    Inspection & Pressure Testing

    NDT, dimensional inspection & hydrostatic testing

    Every pressure boundary is examined before it is proven. Non-destructive testing, dimensional inspection and hydrostatic testing are carried out on the finished vessel, with results recorded against the project documentation.

    • Non-destructive testing of welds and pressure boundaries
    • Dimensional inspection against the approved drawings
    • Hydrostatic testing on the completed vessel
  5. Surface Treatment & Final Delivery 05

    Surface Treatment & Final Delivery

    Surface finishing, documentation & shipment

    The final stage covers surface finishing, completion of the quality documentation package and preparation for shipment. The vessel is packed and released only once the documented checks are complete.

    • Surface finishing and anti-corrosion coating
    • Complete quality documentation package
    • Packing, marking and shipment preparation
Process Advantages

What Makes the Production Line Work

Process advantages documented by the company.

Material Selection

Steel from top domestic mills with strength and toughness exceeding industry standards.

Welding Technology

Advanced equipment and processes delivering smooth, high-quality welds.

Sandblasting Technology

Large-scale equipment ensuring uniform surface preparation for better coating adhesion.

Spraying Process

Custom anti-corrosion coatings with stable performance and long service life.

Inspection

Proving the Pressure Envelope Before Shipment

Inspection activities recorded in the manufacturing documentation.

NDT

Non-destructive testing of welds and pressure boundaries.

Hydro Test

Hydrostatic testing to prove the pressure envelope of the completed vessel.

Pressure Test

Pressure testing performed as part of the documented inspection programme.

Final Inspection

Dimensional and surface inspection with complete quality documentation before shipment.

Inspection and pressure testing of fabricated pressure equipment
Inspection & Testing

Quality Control

Documented inspection activities cover material verification through to final inspection and complete quality documentation.

  • 01

    Material Inspection

    Steel supplied by qualified domestic mills; material verification and incoming inspection.

  • 02

    Welding Control

    WPS/PQR controlled welding performed with advanced welding equipment.

  • 03

    Non-Destructive Testing

    NDT carried out on welds and pressure boundaries prior to pressure testing.

  • 04

    Hydro / Pressure Testing

    Hydrostatic and pressure testing performed as part of final verification.

  • 05

    Final Inspection & Documentation

    Dimensional checks, surface finishing and complete quality documentation before shipment.

Production Facility

Workshop, Equipment & Surface Preparation

Facilities documented in the company manufacturing documentation.

Fabrication Workshop

Fabrication Workshop

Covered fabrication hall with overhead cranes for cutting, forming, machining and assembly.

Welding & Assembly Area

Welding & Assembly Area

Assembly area used for staged welding of shells, heads and nozzles.

Inspection & Testing

Inspection & Testing

Inspection and pressure testing of fabricated pressure equipment.

Surface Preparation & Coating

Surface Preparation & Coating

Sandblasting and spraying capability for anti-corrosion coatings.