Raw material receiving
Incoming bars, billets and forged blanks are matched with the material grade and supplier documents assigned to the order.
From steel receiving to export release
Flange Manufacturing and Quality Control
Every order follows a recorded production route. Material identity, dimensions, inspection results, marking, packing and shipment documents remain connected from incoming steel to the finished flange.
Heat traceability
Dimensional inspection
Marking control
Export release
Production route
How a flange order moves through the factory
Heat number recording
The original heat number is entered into the production record and carried through cutting, forging, machining and final product marking.
Cutting
Steel is cut to the planned blank weight and size. Batch identification stays with the material before it moves to the forging stage.
Forging
Heated material is forged into discs or rings for the required flange type. The production route is selected by material, diameter and section size.
Heat treatment
Normalizing, solution treatment or another specified heat-treatment route is completed when required by the grade, standard or purchase order. The applicable record is retained with the batch.
Machining
Conventional and CNC lathes machine the outside diameter, thickness, bore, hub and other flange geometry to the production drawing.
Drilling
Bolt circle diameter, hole quantity and hole diameter are produced to the applicable standard or approved customer drawing.
Facing
RF, FF, RTJ and specified sealing surfaces are machined with the finish and geometry required for the flange standard and service.
Dimensional inspection
Inspectors check key dimensions, drilling, bore, thickness, facing and visible surface condition before the batch is released for marking.
PMI and NDT
PMI, ultrasonic, magnetic-particle, dye-penetrant or third-party witness inspection is arranged when it forms part of the order. Reports are filed with the inspection package.
Marking
Finished flanges are marked with the standard, size, pressure rating, material grade, heat number and manufacturer identification required by the order.
Rust protection
Carbon-steel flanges receive anti-rust oil, paint, galvanizing or the specified coating after final inspection and surface preparation.
Packing
Flanges are separated, wrapped and secured on export pallets or in plywood cases. Labels identify the purchase order, item and package quantity.
Container loading
Packages are counted against the packing list and secured for the shipment route before the container is closed.
Shipment documentation
The commercial invoice, packing list, certificate package and agreed inspection records are assembled for dispatch to the buyer.
Quality records
Documents retained with the production and shipment file
Linked to the production batch
Released against the order specification
Filed before shipment release
Transferred to the finished flange
Prepared for buyer and customs use
Factory evidence
Production, inspection, protection and packing
