QUALITY
Quality is the TRUE MEASURE
of productivity
(Peter F. Drucker)
Total Quality Management Systems
for hot forging and heat treatment bolts
Tohoku bolt introduced a Quality Management System to keep providing high quality reliable JIS products as Japanese Industrial Standards licensed factory. We obtained Japanese Industrial Standards written permission for “JIS E 1108 Dog spike” in October in 1952. Shortly after that, we obtained the other JIS written permission for “Hexagon heat bolt” and “Fish plate bolt”. Including the “Screw spike”, now, we obtained in total 3 JIS written permissions and 3 JIS certifications. In order to keep earning our clients’ confidence, we will proactively continue improving our quality management system.
The main qualification experience
| General heat treatment Professional Skills | Level 1 2 staff |
Level 2 13 staff |
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| Metal heat treatment Super Master program | graduate 1 staff |
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| Non-destructive test engineer | ||||
| Magnetic particle examination | Level 2 1 staff |
Level 1 2 staff |
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| Liquid penetration examination | Level 1 1 staff |
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| Ultrasonic inspection | Level 1 1 staff |
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| ISO internal auditor | 6 staff | |||
| JIS quality management officer | 1 staff | |||
Main inspection equipment
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| Horizontal wet type magnetic particle flaw detector |
3000kN Universal Tensile tester 3000kN (press and bending) |
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| Charpy Impact tester | Rockwell Hardness tester | Brinell Hardness tester |
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| Micro Vickers Hardness tester | 3000kN Torque tester |
