About Us & Our Advantages

WELTER – SEA CO., LTD

Our products range covers items like a single pinion, a bevel gear set, a planetary stage, a completely reverse-engineered gear unit,
to a complete machine. We provide replacement parts and completely new gearboxes to substitute original parts and old gear units,
independent of original brands. We have been active in Thailand for several years, We serve customers in nearby Southeast Asian countries.

About us

  • We are an ISO 9001-certified Thai company specializing in gears, gearboxes, and mechanical power transmission for industrial applications.
  • We serve customers in Thailand and across Southeast Asia, particularly in heavy industries such as mining and steel.
  • Founded in 2011, we have strong partnerships with leading German manufacturers, including WELTER and CAVEX.
  • We supply both original and interchangeable (reverse-engineered) parts, sourced from trusted manufacturers in Europe and Asia.
  • Our strength is flexibility—we can source or produce parts to meet specific technical requirements, with competitive quality, price, and delivery time.
  • We also provide procurement services for well-known mechanical drive brands, helping customers access products more efficiently.
  • In addition, we offer repair and overhaul services for gearboxes and drive components, supported by testing facilities to ensure performance and reliability.

Our Advantages

  • Brand-independent, technically driven
  • Deep industry understanding with hands-on expertise
  • Flexible sourcing with competitive price, quality, and delivery
  • Advanced engineering: reverse engineering, inspection, and full technical documentation
  • Global network with strong local and international support

Partners and Suppliers

Directly or via with our affiliate, we cooperate with selected European,
Chinese and Indian manufacturers, OEMs and suppliers.

ISO 9001 certified
since 03.2023