News Of Maruichi Sun Steel

Maruichi Sun Steel (Hanoi) Company Limited

Maruichi Sun Steel (HANOI) CO., LTD. (SUNSCO/HANOI), a 100% subsidiary company of MARUICHI SUN STEEL JOINT STOCK COMPANY (SUNSCO), being established in 2008 and start its operation in 2010.
Our policy is to produce & supply the Japanese Quality Tube products to the customers in Vietnam. To do so, we have adopted equipments and quality control systems from MARUICHI STEEL TUBE LTD., who is the No.1 shareholder in welded steel tube market in Japan and is the major shareholder of SUNSCO.

Now, we produce our steel tubes with following specifications:

  • STK (Carbon Steel Tubes for General Structural Purposes)
  • STKR (Carbon Steel Square and Rectangular Tubes for General Structure)
  • STKM (Carbon Steel Tubes for Mechanical Structural Purposes)
  • STKMR (Carbon Steel Square and Rectangular Tubes for Machine Structure)
  • STAM (Electric Resistance Welded Carbon Steel Tubes for Automobile)
  • SGP (Carbon Steel Pipes for Ordinary Piping)

Apart from those standard quality tube products we also produce special quality tube products which are to be used for Automobile, Motorbike, and Furniture etc, if inquired.

SUNSCO/HANOI wishes to have support, guidance and cooperation from all the customers in Vietnam and our products to be acceptedwith satisfaction.

Mechanical properties

Dimensional tolerance


Available size range

>> Round tube(STK, STKM, SGP)        >> Square & Rectanguler tube (STKR, STKMR)


Quality Motto

ISO 9001: 2015