• John Crane Sealing System

  • Copes Vulcan Control Valve

  • Copes Vulcan Raven

  • VEGA Sensors

  • Beaudrey Water Screening


PT. Menara Alfasemesta ( MAS ) is a multi-national fast growing company based in Indonesia with expertise in technical engineering equipment supply for oil and gas, hydrocarbon processing, chemical, power, water resources, mining, pulp and paper, primary metal and general industry.

MAS is fully staffed with skilled and professional experts who were always ready to provide design engineering, product application supply, installation and after sales service for a wide range of equipments and system in order to meet customer's requirements.


At MAS, we always set our objectives clear and precise that is to ensure products availability, improve performance, safety awareness and minimize costs.



World Leading Brands

For solid reputation and sheer technology excellence MAS is supported by world class leading brands and manufacturers such as: John Crane, Sealol, Flexibox, Safematic, Metastream, Powerstream, Lemco, Vega, DeZurik, Asco, Copes-Vulcan, EVC, APV, KD and many more.

Our Mission

Comitted in providing a wide-range, highest grade quality products as well as highest level of product and customer services.

Our Vision

To become one of the largest supplier of engineering products in Indonesia.



Head Office


PT. Menara Alfasemesta
Jl. Bambu 2 No. 77A
Medan, 20235, Sumatera Utara
Telp : +62 61 - 6622422 / 6625715
Fax : +62 61 - 6618709
Email : sales.mdn@mas.co.id

Our Branch Location

Tel: 0761 - 7079566
Email: sales.pkb@mas.co.id

Tel: 0711 - 442088
Email: sales.plg@mas.co.id

Tel: 021 - 5648161
Email: sales.jkt@mas.co.id

Tel: 031 - 8554616
Email: sales.sby@mas.co.id

Tel: 0542 - 766128
Email: sales.bpn@mas.co.id


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