Applicable to nut and bolt (with the same specification) assembly and disassembly on both ends, with 15° displacement, more convenient for operation.Forged with real material. Advantages of forging: high density, good toughness, smooth surface, clear writing, uneasy bending, uneasy rapture, even hardness and longer service life than traditional forging process.
Specification of 9-set combination wrench: 8, 10, 12, 14, 17, 19, 22, 24, 27mm. Performance detection standard for aluminum bronze explosion-proof tools:
1. No gas explosion in the drop hammer test for 20 times in (7.8±0.5)% ethylene or no gas explosion after 5 rotating friction tests within 1s in (7.8±0.5)% ethylene;
2. Standard code: GBExIIB;
3. Hardness: HRC20-30;
4. Tensile strength: δb75-85kgf/mm².