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Changzhou AMG Precision Tool Manufacturing CO., LTD

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City:changzhou

Province/State:jiangsu

Country/Region:china

Contact Person:MsGrace

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China High Precision Long Flute Drill 8D 12D 15D 20D 25D 30D 40D Carbide Drill Bits For Metal wholesale

High Precision Long Flute Drill 8D 12D 15D 20D 25D 30D 40D Carbide Drill Bits For Metal

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Brand Name :AMG

Certification :ISO9001

Place of Origin :CHINA

Payment Terms :T/T/Credit Card

Product name :Long Flute Drill

Length Options :8xD 12xD 15xD 20xD 25xD 30xD 40xD

Application :aluminium, cast iron, steel, inconel 718, titanium, etc

Coating :Customized

Shank Type :Round

Point Angle :135 degrees

Material :Carbide

Precision :High precision

Usage :Metal drilling

Flute Type :Spiral

MOQ :3-10PCS

Packaging Details :Plastic tube

Delivery Time :5-12 working days

Supply Ability :30000-100000pcs per month

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Carbide Deep Hole Drill 8D 12D 15D 20D 25D 30D 40D Extra Long Flute Length Drill

Introduction:

AMG's premium extra-long carbide drills redefine deep hole machining with exceptional stability and precision across extended flute lengths (8D to 40D). Designed for challenging applications where standard drills fail, these tools deliver uncompromising accuracy and tool life in deep cavity machining.

Specification:

8D carbide drill
Flute dia (D)	Shank dia (d)	OAL(L)	Groov length (L1)	Shank length(LS)
3	6	72	34	36
3.1	6	72	34	36
3.2	6	72	34	36
3.3	6	72	34	36
3.4	6	72	34	36
3.5	6	72	34	36
3.6	6	72	34	36
3.7	6	72	34	36
3.8	6	81	43	36
3.9	6	81	43	36
4	6	81	43	36
4.1	6	81	43	36
4.2	6	81	43	36
4.3	6	81	43	36
4.4	6	81	43	36
4.5	6	81	43	36
4.6	6	81	43	36
4.7	6	81	43	36
4.8	6	95	57	36
4.9	6	95	57	36
5	6	95	57	36
5.1	6	95	57	36
5.2	6	95	57	36
5.3	6	95	57	36
5.4	6	95	57	36
5.5	6	95	57	36
5.6	6	95	57	36
5.7	6	95	57	36
5.8	6	95	57	36
5.9	6	95	57	36
6	6	95	57	36
6.1	8	114	76	36
6.2	8	114	76	36
6.2	8	114	76	36
6.4	8	114	76	36
6.5	8	114	76	36
6.6	8	114	76	36
6.7	8	114	76	36
6.8	8	114	76	36
6.9	8	114	76	36
7	8	114	76	36
7.1	8	114	76	36
7.2	8	114	76	36
7.3	8	114	76	36
7.4	8	114	76	36
7.5	8	114	76	36
7.6	8	114	76	36
7.7	8	114	76	36
7.8	8	114	76	36
7.9	8	114	76	36
8	8	114	76	36
8.1	10	142	95	40
8.2	10	142	95	40
8.3	10	142	95	40
8.4	10	142	95	40
8.5	10	142	95	40
8.6	10	142	95	40
8.7	10	142	95	40
8.8	10	142	95	40
8.9	10	142	95	40
9	10	142	95	40
9.1	10	142	95	40
9.2	10	142	95	40
9.3	10	142	95	40
9.4	10	142	95	40
9.5	10	142	95	40
9.6	10	142	95	40
9.7	10	142	95	40
9.8	10	142	95	40
9.9	10	142	95	40
10	10	142	95	40
10.2	12	162	114	45
10.3	12	162	114	45
10.5	12	162	114	45
10.8	12	162	114	45
11	12	162	114	45
11.2	12	162	114	45
11.5	12	162	114	45
11.6	12	162	114	45
11.8	12	162	114	45
12	12	162	114	45
12.1	14	182	133	45
12.2	14	182	133	45
12.5	14	182	133	45
12.8	14	182	133	45
13	14	182	133	45
13.5	14	182	133	45
13.8	14	182	133	45
14	14	182	133	45
14.2	16	203	152	48
14.5	16	203	152	48
14.8	16	203	152	48
15	16	203	152	48
15.5	16	203	152	48
15.8	16	203	152	48
15.9	16	203	152	48
16	16	203	152	48

12D carbide drill
Flute dia (D)	Shank dia (d)	OAL(L)	Groov length (L1)	Shank length(LS)
3	6	90	50	36
3.1	6	90	50	36
3.2	6	90	50	36
3.3	6	90	50	36
3.4	6	90	50	36
3.5	6	90	50	36
3.6	6	90	50	36
3.7	6	90	50	36
3.8	6	102	64	36
3.9	6	102	64	36
4	6	102	64	36
4.1	6	102	64	36
4.2	6	102	64	36
4.3	6	102	64	36
4.4	6	102	64	36
4.5	6	102	64	36
4.6	6	102	64	36
4.7	6	102	64	36
4.8	6	116	78	36
4.9	6	116	78	36
5	6	116	78	36
5.1	6	116	78	36
5.2	6	116	78	36
5.3	6	116	78	36
5.4	6	116	78	36
5.5	6	116	78	36
5.6	6	116	78	36
5.7	6	116	78	36
5.8	6	116	78	36
5.9	6	116	78	36
6	6	116	78	36
6.1	8	146	108	36
6.2	8	146	108	36
6.2	8	146	108	36
6.4	8	146	108	36
6.5	8	146	108	36
6.6	8	146	108	36
6.7	8	146	108	36
6.8	8	146	108	36
6.9	8	146	108	36
7	8	146	108	36
7.1	8	146	108	36
7.2	8	146	108	36
7.3	8	146	108	36
7.4	8	146	108	36
7.5	8	146	108	36
7.6	8	146	108	36
7.7	8	146	108	36
7.8	8	146	108	36
7.9	8	146	108	36
8	8	146	108	36
8.1	10	162	120	40
8.2	10	162	120	40
8.3	10	162	120	40
8.4	10	162	120	40
8.5	10	162	120	40
8.6	10	162	120	40
8.7	10	162	120	40
8.8	10	162	120	40
8.9	10	162	120	40
9	10	162	120	40
9.1	10	162	120	40
9.2	10	162	120	40
9.3	10	162	120	40
9.4	10	162	120	40
9.5	10	162	120	40
9.6	10	162	120	40
9.7	10	162	120	40
9.8	10	162	120	40
9.9	10	162	120	40
10	10	162	120	40
10.2	12	204	156	45
10.5	12	204	156	45
11	12	204	156	45
11.5	12	204	156	45
12	12	204	156	45
12.5	14	230	182	45
12.7	14	230	182	45
13	14	230	182	45
13.5	14	230	182	45
14	14	230	182	45
14.5	16	260	208	48
15	16	260	208	48
15.5	16	260	208	48
16	16	260	208	48
16.5	18	285	234	48
17	18	285	234	48
17.5	18	285	234	48
18	18	285	234	48
18.5	20	310	258	50
19	20	310	258	50
19.5	20	310	258	50
20	20	310	258	50

Features:

✔ Ultra-Fine Carbide Substrate

0.5μm grain structure for optimal toughness/wear balance
High rigidity core design minimizes deflection

✔ Advanced Coating Options

Standard: Naco Black (for universal applications)
Upgrade: AMG HyperCoat (for superalloys)

✔ Patented Flute Geometry

Variable helix angle (35°-45°) eliminates harmonic vibration
Wide chip gullet prevents packing in deep holes

✔ Precision Ground Margins

0.02mm margin width for optimal guidance
Polished surface (Ra 0.1μm) reduces friction

Recommended Applications:

- - Aerospace: Landing gear bores, hydraulic manifolds
  - Medical: Orthopedic implant channels
  - Energy: Turbine shaft oil passages
  - Automotive: Fuel injection components

Available Specifications:

Diameter Range: 1mm – 20mm (custom sizes available)
Shank Type: Straight, reduced, or coolant-through (optional)
Coating: Blue Nano (standard), TiAlN, or AlCrN for extreme conditions

Detailed Pictures:

Our workshop:

New Customer Special Offers:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Our advantages:

1.Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.

2.Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide tools.

3.Fast feedback: we offer 24 hours online service

4.Strict quality control system:
We strictly adhere to a three-stage inspection process for each tool:
Raw material inspection
Semi-finished product inspection after production
Final inspection after coating (pre-shipment check)

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