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2021-06-15

Here’s an English comparison guide on how to choose between spiral flute taps, straight flute taps, and forming (roll) taps:

Feature	Spiral Flute Taps	Straight Flute Taps	Forming (Roll) Taps
Chip Handling	Excellent for chip evacuation in blind holes	Moderate; chips collect in the hole	No chips produced (cold forming process)
Best For	Blind holes, soft & ductile materials	Through holes, cast iron, short blind holes	Ductile materials like aluminum, brass, copper
Hole Type	Blind holes	Through holes & shallow blind holes	Mostly blind holes
Thread Forming	Cutting type	Cutting type	Cold forming—material displaced, not cut
Lubrication Need	Medium to high	Medium	High—critical to prevent tap breakage
Surface Finish	Good	Average	Excellent—smooth, work-hardened threads
Tap Strength	Moderate	High	Very High (no cutting edges)
Material Suitability	Steel, aluminum, stainless steel	Cast iron, steel, brass	Soft to medium ductile materials only
Tolerance Control	Standard	Standard	High precision, less variation

Jiangsu Xingrui Tools CO.,LTD

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FeiDa indutrial Park,Hou Xiang Town,DanYang City,Jiang Su Province,China.

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