deep hole carbide twist drill
high hardness,wearing resistance,high positional accuracy,fast chip removal,high working-efficiency.
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Description
Product: carbide tungsten deep hole drill with internal cooling
Raw material : micro-granular powder tungsten steel
Coating: AlTiN
Application: stainless steel,mold steel,Aluminum,iron casting,copper,galvanized steel pipe and other metal materials.
Characteristics: high hardness,wearing resistance,high positional accuracy,fast chip removal,high working-efficiency.
Specification:
| L
L1 d |
L=80 | L=100 | L=120 | L=160 | L=200 | L=250 | L=300 | L=350 | L=400 |
| 0.5–1.2 | 55 | 65 | 75 | ||||||
| 1.3–1.5 | 55 | 65 | 75 | ||||||
| 1.6–2.0 | 65 | 75 | 82 | ||||||
| 2.1–2.5 | 75 | 82 | |||||||
| 2.6–3.0 | 75 | 82 | 145 | ||||||
| 3.1–3.3 | 75 | 82 | 145 | ||||||
| 3.4–4.0 | 82 | 145 | 190 | 230 | |||||
| 4.1–4.5 | 82 | 145 | 190 | 230 | |||||
| 4.6–5.0 | 82 | 145 | 190 | 230 | 270 | 320 | |||
| 5.1–5.5 | 82 | 145 | 190 | 230 | 270 | 320 | |||
| 5.6–6.0 | 82 | 145 | 190 | 230 | 270 | 320 |
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