NXF UNS S20910 XM-19 OD DN6-DN1200 Pressure 3000-9000lb Special Stainless Steel Forging Fitting Threaded Cap

1. Raw Material Selection and CuttingSelect high-quality round steel bars (such as ASTM A105 or SS316) and cut them intobillets of the required length using a sawing machine.2. HeatingHeat the billets in an induction furnace to the forging temperature, typically between1000°C and 1200°C, to ensure metal plasticity.3. Die ForgingPlace the heated billet into a forging press. Use high pressure and molds to shape themetal into the rough form of a cap, which improves the internal grain structure.4. Trimming and Shot BlastingRemove the excess metal flash from the edges and use shot blasting to clean off oxidescale and smooth the surface.5. Heat Treatment Apply normalizing or solution treatment based on the material type to relieve internal stresses and enhance mechanical properties.6. MachiningUse CNC lathes to bore the internal diameter and finish the external surfaces to meet theprecise dimensions required by standards like ASME B16.11.7. ThreadingCut the internal threads (such as NPT or BSPT) using high-precision tapping machines or CNC threading tools.8. Surface TreatmentApply anti-corrosion coating, such as galvanizing or black phosphating for carbon steel, or passivation for stainless steel.9. MarkingStamp the required information on the body, including size, pressure rating (e.g.,3000LB), material grade, and heat number.10. Final InspectionPerform quality checks using thread gauges for accuracy and conduct hardness orchemical tests to ensure compliance.