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Trailblazer in Special Punch Development
Satisfies the Global Market of High-end Punches

Sheng Long from Kaohsiung is best at developing punches of special shapes, most of which on the Taiwanese market are manufactured by this innovation-driven corporation. It mainly produces standard punches, special punches (in tungsten steel) and punches of special shapes in diameters Ø 0.25 ~ Ø 150.0, lengths up to 800mm, and tolerances up to 0.002mm. With a high market share in Taiwan, it exports to the U.S and Europe among other countries.
Magic Number for Manufacturing Premium Punches: “RA 0.03”
Service life is a highly crucial factor for punches. The higher surface roughness, the shorter punch life; conversely, the lower surface roughness, the longer life limits. Mastering roughness is a huge bottleneck in manufacturing highly durable punches. Special steels such as tungsten in particular have very high hardness. It requires extreme finesse to well handle both roughness and tolerance for punches made of such materials, and this is the technology already mastered by Sheng Long. The company keeps surface roughness below RA 0.03 to simultaneously maintain maximal performance and durability for tungsten steel.
Leading Brand of the Punch Industry
Sheng Long purchases and/or develops up to 7 types of surface treating machines. Each punch goes through up to 25 manufacturing processes to reach perfect specification, tolerance and surface roughness. The whole production line is managed through ERP to track products and keep records. “Our ERP system isn’t just an ordinary packaged software, but a customized system with every detail catering to our manufacturing process. It handles detailed analysis of production management, and is fine-tuned to reflect our finance, sales and R&D according to our customized demand. It requires collective maintenance by all employees who will produce products and uplo...