High-strength bolts (cold forging, hot forging, thread rolling, heat treatment, surface treatment)
No.1 share for construction machinery bolts! Established a consistent production system from materials to heat treatment.
Kyowa Kogyo Co., Ltd. is a specialized manufacturer of high-quality bolts. The raw materials used are sourced from major domestic blast furnace and electric furnace manufacturers, and we establish a close collaboration system by providing feedback on processing information to the steel manufacturers and jointly discussing specifications. In addition to high-quality bolts, we also offer various know-how related to steel processing, including solid and hollow bolts, and special shape processing. 【Business Activities】 ■ Hex bolts ■ JIS B 1176 hex socket bolts ■ Special bolts for construction machinery ■ Internal combustion engine bolts ■ Cold forged parts for automobiles, etc. *For more details, please download the PDF or feel free to contact us.
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【Equipment (Partial Excerpt)】 ■ Bolt Former ■ Parts Former ■ Vertical Press ■ Rotary Rolling Machine ■ Friction Press ■ Screw Press ■ NC Lathe ■ NC Grinding Machine ■ Machining Center ■ Hob Machine, etc. *For more details, please download the PDF or feel free to contact us.
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Kyowa Kogyo Co., Ltd. is a specialized manufacturer of high-quality bolts. Our products are highly regarded and used as components in construction machinery, marine internal combustion engines, and automobiles, among others, under extremely harsh conditions. Please feel free to contact us if you have any inquiries.