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hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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Forged Flange Manufacturing Technology and technical requirements

Forged flange have the best mechanical character in the flange products. its raw material is steel bar. 
First we purchase the steel bar as customer required, then cut it off into right size for forging.the cutted raw material names forging rough, after cutting heat the forging rough in a forge. Then beat the heated steel bar with power hammmer for high strength. As the steel bar is shaped during the forging process, its internal grain deforms to follow the general shape of the part, that improve the strength charateristics.
In our factory , we uasally produce flange with open-die drop forging also known as smith forging. Put the heated bar under power hammer, keeping the power hammer dropping to shape the raw flange material to flange, the operator need to orient and position the workpipiece to get desired shape. for the most flange types we need forging die to shape the weld neck, groove and holes of flanges.
Open die forging steel flange

Open die forging steel flange

 

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