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Cold forging carbon steel flange


This flange is assembled in wind-power generator, the OD/ID tolerance is very small as 0.029, the holes position are accurate. The tolerance is inspected by CMM. In order to the get the right inspection result, the CMM inspection must be 24 hours after the flanges were put in 24℃ to 26℃ room, We and the client use the same inspection parameters.


The flange is exported to Denmark, annual order quantity is 1000pcs.


The flange was developed by MiaoChenGeng and his team in five months.



Nanjing Precision Engineering Co., ltd

Product’s Parameters

1. Material:Carbon steel c45 with material certificate
2. Process:Pipe-cutting-Forging+ cnc machining+ deburrs
3. Service available:OEM and ODM service ,the client has provided STEP, CAD, and 4. PDF drawings with us, Our production and the quality control is according to the technical drawings seriously.
5. Roughness:Ra1.6 and Ra0.8
6. Tolerance:ISO2768-M/F and EN10243-F with dimensions’ inspection report
7. Dimensions:OD:332mm, T:8mm
8. Traceability:Material heat no, production batch, delivery batch
9. Certification:ISO9001,SGS, Rohs
10. Net Weight:0.42KGS
11. Packing    inner: bubble poly bag; outer: carton box or poly wooden case/pallet, final: with # straps

Production time for 1000pcs

10-15 days

Payment Method

T/T bank ,LC, Western Union Pay, PayPal, Cash...

Trade Incoterm



Small batch: express such as FedEx/ DHL/ UPS/ TNT/ EMS...... Bulk batch: by air& by sea in LCL and FCL

Logistics Service

Booking, Pick-up Arrangement, H.S CODE select, ETD and ETA notification......

Shipping Docs

Bill of lading, Packing List, Invoice, Co, Coo, Form A/E/F, Non-wood packing declaration......

After -sale service

Technology support, Inspection support, assembly support, custom clearance support......

Complaints and Claims

The complaints and the claims will be answered within 2 hours definitely

Intellectual Property Protection

Respect NDA Agreement Seriously


100% refund or replacement for nok pcs

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I am Cindy Fan,you please kindly send your inquriy to ,I will send you quotation with 2 hours, or contact me at Skype Cindy-fan, Wechat 86-13813884518, and Whatsapp 86-13813884518,thank you!