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Note 1 – The cut pieces are heated in oil fired furnace at 1100 °C and the forging process ends at 910 ° C.
Note 2 – Normalizing is not required for flanges up to class #300 as per code ASTM A105. Above class #300
normalizing is done in induction (electric) heating furnace at 910 °C and then air cooled.
Raw Material receipt
Incoming inspection
(review of MTC and
chemical check testing
as per ASTM A105)
Heating of Cut pieces
Refer note 1
Machining
Drilling
Final inspection
(Dimensional & visual as
per ANSI B16.5) Cutting
Forging
Dimensional & visual
inspection
Heat Treatment
Refer note 2
Stamping
Color & Packing
Final Dispatch
Inspection mechanical
properties (physical
testing as per ASTM
A105
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Process Chart – Carbon Steel Flange