Precision Manufacturing for Global Flow Control
From foundry to final testing—our controlled processes, qualified procedures, and traceability systems deliver valves built for harsh duty cycles.
Manufacturing Excellence, Backed by Control Plans & Traceability
Oswal’s manufacturing ecosystem is designed to produce consistent, standards-compliant valves at scale. We combine robust process controls, qualified weld procedures, calibrated inspection tools, and end-to-end traceability—supporting critical services including Oil & Gas, LNG, Power, Water and Chemicals.
- Controlled processes with documented QAP/ITP & in-process checks
- Material traceability (heat numbers), MTCs & inspection records
- Qualification-ready for hydrostatic/pneumatic testing, NDE, and fire-safe or fugitive emissions testing (as required)
Complete Manufacturing Processes
A typical end-to-end flow for valve manufacturing and qualification.
Incoming Material Control
MTC · Heat No. · PMIMaterial receipt verification, identification, segregation and traceability setup.
- MTC review & heat-wise tagging
- PMI / chemistry verification (as required)
- Traceability mapping to BoM
Casting / Forging Readiness
Foundry InputsProcess planning and inspection checkpoints for cast/forged components.
- Visual & dimensional checks
- NDE readiness as per spec
- Repair control & records
CNC Machining
Turning · Milling · DrillingPrecision machining for body/bonnet/trim with controlled tolerances and surface finish.
- Operation-wise inspection
- Critical dimensions & run-out checks
- Surface finish verification
Welding & Fabrication
WPS/PQR · Qualified WeldersControlled welding processes with qualified procedures and documented parameters.
- WPS/PQR compliance
- Interpass temp & consumable control
- NDE as per ITP
Heat Treatment
Normalize · PWHT · Solution AnnealControlled furnace cycles and charts aligned to material grade and spec.
- Furnace calibration & uniformity
- Time-temperature chart retention
- Hardness / mechanical verification (as required)
Surface Prep & Coating
Blasting · Painting · Special CoatsCoating system selection and application as per service, environment and customer spec.
- Surface cleanliness & profile checks
- DFT & adhesion verification
- Touch-up & packing readiness
Assembly
Cleanliness · Torque · Fit-upControlled assembly, component verification, lubrication practices and torque control.
- Parts verification vs BoM
- Seat/trim installation checks
- Functional checks & torque recording
Inspection & NDE
VT · PT · MT · UT · RTNDE and dimensional inspection as defined in the ITP and applicable standards.
- Calibrated instruments & reports
- PMI verification (as required)
- Hold points & witness points
Pressure Testing
Hydrostatic, Pneumatic, and Seat Leakage TestsShell and seat testing as per applicable valve test standard and customer spec.
- Shell / backseat / seat tests
- Recording & certification
- Test bay safety & controls
Special Qualification Tests
Fire-safe · Emissions · CryoQualification tests performed as required by project scope and service conditions.
- Fire-safe / fugitive emission (as required)
- Cryogenic testing (as required)
- Third-party inspection readiness
Preservation & Packing
Export · Long-term StorageProtection and packaging designed to prevent corrosion and damage during shipment.
- End caps, VCI, rust preventives
- Crating & marking as per spec
- Shipping documents readiness
Documentation & Data Book
QAP/ITP · MTC · ReportsAudit-ready documentation compiled for lifecycle support and project closeout.
- Inspection & test records
- NDE reports, certificates
- Final release & dispatch pack
Typical Manufacturing Flow
A clear, gate-based execution model—from raw materials to dispatch—supported by hold points, witness points and documentation discipline.
Start with Your SpecsMaterial Receipt & Traceability
MTC verification, tagging, segregation, and heat-wise control.
Machining / Fabrication
CNC operations, welding as per WPS, in-process inspection.
Heat Treatment & Surface Prep
Controlled cycles, blasting/painting, coating verification.
Assembly & Functional Checks
Trim fit-up, torque checks, cleanliness and alignment controls.
Testing & Qualification
Hydro/pneumatic testing, NDE, special tests as required.
Packing, Dispatch & Data Book
Preservation, marking, crating, and audit-ready documentation.
Manufacturing Gallery
Placeholders below—replace with real shop-floor images.
