Manufacturing and Assembly Process
01Workshop Process OverviewSmall-bore forged steel slab gate valve production recorded in the workshop.
02Closure Component PreparationForged steel closure components prepared for inspection before assembly.
03Component MachiningWorkshop machining and finishing during component preparation.
04Valve Body PreparationForged valve body prepared for the subsequent assembly stage.
05Internal Component InspectionAccessible internal components checked against the production requirements.
06Assembly PreparationPrepared components arranged for final valve assembly.
Manufacturing and Inspection Scope
This case records visible manufacturing and assembly stages for a batch of small-bore forged steel slab gate valves. The production record covers preparation of the internal closure components, machining activity, valve-body preparation and completed valve assemblies.
The stated design basis is API 602 / ISO 15761, with pressure testing specified to API 598. Final size, pressure rating, material grade, end connection, bore, trim and acceptance criteria are governed by the approved drawing, purchase specification and inspection and test plan. Photographs and video document visible workshop stages but do not independently establish complete conformity or pressure-test acceptance.
| Valve Type | Small-bore forged steel slab gate valve |
|---|---|
| Manufacturing Form | Forged steel construction |
| Nominal Size | According to the approved order documents |
| Pressure Rating | According to the approved order documents |
| Material Grade | According to the approved bill of materials |
| Design Standard | API 602 / ISO 15761 |
| Pressure Test Standard | API 598 |
Final configuration, dimensions, end connections, trim, operating method and inspection requirements remain subject to the approved order documents.
Items Controlled During Manufacturing and Assembly
- Valve body and component identification against the production traveller and material records.
- Machined dimensions, connection interfaces and accessible sealing surfaces against the approved drawing.
- Closure-component preparation, internal positioning and stem connection during assembly.
- Operating movement, marking and final assembly status against the approved order documents.
- Pressure-test scope and acceptance to the approved API 598 procedure.
Documents to Request Before Shipment
Depending on the purchase order, the release package may include the approved drawing, bill of materials, material certificates, traceability records, dimensional and assembly inspection records, API 598 pressure-test report, marking photographs and final packing records.
Project Release Basis
Project release should reference the approved drawing, bill of materials, material records, inspection and test plan, dimensional record and API 598 pressure-test documentation.
Size, pressure class, end connections, bore, trim, material grade, leakage acceptance, NDE extent, coating and preservation remain order-specific until confirmed in the approved manufacturing documents.
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