PRODUCTS

Company outline

OKB Co., Ltd. manufacture aluminum Micro Multi-port tube by extrusion.
OKB is a 100% subsidiary company of Ohki Brass & Copper Co., Ltd., which has abundant experience and technology in manufacture of wrought copper alloy products.
Since the needs for heat exchangers have recently become more advanced and diversified, OKB provides its customers with consulting services and proposals for the future.
With the original technology and development ability, and under the total quality control, OKB can constantly supply highly precise products.

Aluminum Micro
Multi-port (MMP) Tube

In thorough pursuit of possibility of aluminum extrusion,
OKB satisfies the requirement for advanced and diversified
heat exchangers.

Heat exchangers manufactured with OKB MMP tubes

  • ▼Condenser for air conditioning unit of vehicle

  • ▼Evaporator for air conditioning unit of vehicle

Excellent quality

OKB supply excellent quality products under the total quality control through the process which are die manufacturing, extrusion, cutting and final inspection.

Fine shape and high precision

Extrusion die

Extrusion dies which are manufactured by OKB own technology provide finely shaped and highly precise tubes.

Extrusion

Using extrusion dies manufactured by
OKB, OKB can extrude Micro Multi-port tube
having excellent dimension and surface.

Cutting

Cutting process follow extrusion process,
Cut to length (CTL) of Micro Multi-port tube
is made through straightening and end
forming.

Inspection

  • ▼Dimensional inspection

  • ▼In-line inspection

Coating tube

  • Sil-flux coated tube

    OKB can provide various coating including Sil-flux coating.

  • Zinc spray-coated tube

    OKBʼ s Zinc arc spray technology gives uniform zinc coating on tubes.