

Description
3331 Tool set 25pcs (oil depots) | ||
NO. | Item | Specifications |
1061 | Combination wrench | 8、10、12、14、17、19、22mm |
1131 | Adjustable wrench | 200、250mm |
1171 | F type wrench | 40×300mm |
1721 | Pipe wrench | 300mm |
1761 | Combination pliers | 200mm |
1771 | Long nose pliers | 160mm |
1801 | Diagonal pliers | 160mm |
1811 | Adjustable pliers | 200mm |
1892 | Screwdriver(-) | 100、150mm |
1902 | Screwdriver(+) | 100、150mm |
1952 | Ball-peen hammer | 0.45kg |
2232 | Arched scraper | 75×360mm |
2351 | Flat chisel | 16×180mm |
2381 | chisel | 16×180mm |
2451 | crowbar | 18×400mm |
3061 | flashlight | LED |
Non sparking tools is also called safety tools or explosion proof tools.There are two types of materials.
1,Aluminum bronze,Al-Cu,aluminum,nickel,manganese,iron and other metals were added to the high purity electrolytic copper as matrix to form copper-based alloy.
2,Beryllium copper,Be-Cu,the copper base alloy was forming by adding some metals such as beryllium,nickel.
The thermal and electrical conductivity of these two materials are very good,beryllium bronze is non-magnetic and can be used in strong magnetic fields.
Explosion proof tools can be divided in two catagories by manufacturing process.
1.Cast,is a kind of traditional technique,it is an international technology for manufacturing explosion proof tools in 1980s.
Advantages of casting process: simple process,lower manufacturing cost.
Disadvantages: product density,hardness,tensile strength,low torque,more pores and trachoma lead to shorter service life.
2.Forging,is a kind of international manufacturing technology.Products can be made one-time forging by large press or punch press with heat-resistant forming die.
Advantages:greatly improved the performance in product density,hardness,tensile strenth,torque,basically eliminate porosity,trachoma.The machanical properties of products service life than traditional casting process 1 times.
Disavantages: product equipments,mold development,resulting higher cost.
Technical
Be-Cu | |
Green lake, GBEX IC,for hydrogen with concentration 21.0+2.0%. | |
Hardness | HRC35 |
Tensile strength | δ b 105-120kgf/mm² |
Al-Cu | |
Bluish yellow, GBEX IIB, for ethylene with concentration 7.8+0.5% | |
Hardness | HRC25 |
Tensile strength | δ b 75-85kgf/mm² |
Keywords


3331 Combination tool set for oil depot (25cs)
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