55 HRC Factory Direct Supply Carbide Twist Drill Bits for Wholesalers

• Customized: Customized
• Standard: BIN, JIS, AISI, API, TUV
• Type: Twist Drill Bit
• Material: Solid Carbide
• Usage: Metal Drilling
• Flute Diameter: 3-40
• Model NO.: 1149
• Overall Length: 50-330
• Precision: 0.01mm
• HRC: 45/50/55/60/65
• Coating: Altin/Tialn/Helica etc
• Delivery: 7-15 Working Days
• Suitable for: Steel,Stainless Steel,Cast Iron etc
• Flute Number: 2
• Transport Package: Plastic Box
• Trademark: eitfs
• Origin: China
• HS Code: 8207509000
• Production Capacity: 100000/Year

Product Description

 

Details

d1	d2	L1	L2	L3	L4	Coolant solution
3.00-3.70	6	62	20	14	36	With/Without Inner Coolant
4.00-4.65	6	66	24	17	36	With/Without Inner Coolant
4.80-6.00	6	66	28	20	36	With/Without Inner Coolant
6.10-7.00	8	79	34	24	36	With/Without Inner Coolant
7.10-8.00	8	79	41	29	36	With/Without Inner Coolant
8.10-10.00	10	89	47	35	40	With/Without Inner Coolant
10.25-12.00	12	102	55	40	45	With/Without Inner Coolant
12.25-14.00	14	107	60	43	45	With/Without Inner Coolant
14.25-16.00	16	115	65	45	48	With/Without Inner Coolant
16.50-18.00	18	123	73	51	48	With/Without Inner Coolant
18.50-20.00	20	131	79	55	50	With/Without Inner Coolant

Advantages
1.Super resistance to oxidation of the coating

2.Comparison on abrasion of the top cutting edge after processing 60m

3.Comparison on abrasion of the side cutting edge after processing 60m


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Packing and delivery