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17~155mm Single Box Wrench NOn Sparking Hand Tools Botou
1. 17~155mm Single Box Wrench NOn Sparking Hand Tools Botou
2.aluminum bronze material
3.die forged processing
4.own factory
5.ISO9001 certification
Specification:
Number |
S mm |
L |
Be-Cu |
Al-Cu |
|
156-8 156-75 |
8 10 12 14 17 19 22 24 27 30 32 36 41 46 50 55 60 65 70 75 |
110 120 130 140 155 170 190 215 230 255 265 295 330 365 400 445 474 510 555 590 |
40 50 65 90 105 130 175 270 370 425 550 825 1120 1590 1850 2060 2530 2700 |
45 60 80
|
Composition:
|
Beryllium copper: GBEx ⅡC Be: 1.8% - 2.3% Ni: 0.2% - 0.5% Others: < 0.5% Cu: Rest Hardness: 35-40 HRC (HB283-365) Tensile Strength: 1117 N/mm2 ~ 1326 N/mm2 |
|
Aluminum bronze: GBEx ⅡB Al: 10% - 12% Ni: 4% - 6% Fe+Mn: < 5.8% Cu: Rest Hardness: 20-30 HRC (HB229-291) Tensile Strength: 782 N/mm2 ~ 989 N/mm2 |
The processing procedure
Al-bronze (HRC≥25°b>75-85kgf/mm² )
Be-bronze(HRC≥35°b>105-120kgf/mm²)
1) To prepare the raw material, blanking
2) Smelting
3) Pouring
4) Cut the water gap
5) Stored in the semi finished products warehouse
6) Punching
7) Through the drawbench or slotting machine
8) PE plain end and chamfering
9) Drill hole
10) Perfect the product and marking
11)If Be-bronze, need heat treatment
12) Polishing
13) Surface treatment
14)Stored in the finished products warehouse
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