OVM leads global prestressing industry

OVM is a leading product supplier and specialist contractor in China and world wide in the field of Post-tensioning and other specialized construction techniques. OVM Systems have successfully worked on challenging projects including bridges, buildings, tunnels, harbors, dams and nuclear power plants. OVM designs its systems and fabricates them in its own Chinese factory allowing it to apply a stringent quality control system on its products throughout the manufacturing process. In doing so, OVM established itself as a leading Post-tensioning provider with a strong reputation for high quality, reliability, professionalism.

With over 40 years of experience in the field, OVM has developed into one of the leading Product Suppliers and Specialist Contractors in China. OVM’s proprietary systems have been integrated into a variety of different projects, ranging from bridges to nuclear power plants. At the strategic level OVM perpetually invests in R&D to remain at the forefront of the industry and to continually offer more efficient and effective solutions to clients internationally. Product lineup includes Post-tensioning Systems, Cable Systems, Construction Solutions, Bearings & Expansion Joints, and Monitoring Systems. The entire product offering is certified as compliant to ISO9001-2008 and meet requirement standards specified by international organizations including:- ETAG 013, AASHTO LRFD, BS, ASTM, JIS, etc.


With more than 50 years of experience in the field, OVM has evolved into a leading product supplier and specialist contractor worldwide in the field of Post-tensioning and other specialized construction techniques. OVM technology and products have been applied and integrated into a multitude of projects including: buildings, bridges, highways, high-speed railways, dams, nuclear power plants- receiving worldwide acknowledgement. OVM invests from its annual turnover into technical R&D to remain at the forefront of the industry.

The company owns a national technology center and a postdoctoral research workstation and maintains close relationships with numerous universities and institutions across China; this effort has led to OVM registering many technical patents.

The company focuses on developing top of the line Post-tensioning technology while building renowned brand in the field of civil engineering. As the largest supplier in China, OVM carries a large selection of Post-tensioning systems which include, but are not limited to: Post tensioning systems, Cable systems (MS & PWS Cables), and Construction solutions (incremental launching, turning, and heavy lifting)

OVM product excellence is certified by the ISO9001-2008, Quality Management System by BSI, and CQC. Additionally, our products satisfy all major standards such as AASHTO, ASTM, BS, EN, ETA, FIP, GB, JIS, and PTI. Moreover, OVM conducts extensive testing with international independent testing organizations to further improve its products at the technical level.


Post-Tensioning (PT) is a dynamic technology that allows for the cost-effective construction of high-quality bridges. PT is adaptable in that it can be implemented in a wide variety of conditions and lengths. Post-tensioned bridges have a high degree of intrinsic durability, can be constructed relatively swiftly, are at a lesser risk of cracking, have lesser structural depth, and feature low maintenance costs.

Additionally, these bridges can be built without touching the geography below- permitting longer spans (~300 ft.), and shallower girders.

Better ductility, seismic performance, and aesthetics are common benefits gained from utilizing post-tensioning.



Post-Tensioning is a solution that may be integrated into different types of buildings, ranging from residential apartments to hotels. PT in buildings leads to greater design flexibility and requires less reinforcing steel than conventional methods to attain same levels of strength. Post-tensioned concrete drastically reduces floor-to-floor heights when compared to structural steel, therefore reducing facade, HVAC, electrical, plumbing, and vertical transport system expenses- hence leading to significant savings.

Integrally, post-tensioned buildings have superior structural integrity when compared to precast concrete structures, have better crack control, have an overall lower building mass, and have a faster floor construction cycles – all without sacrificing building aesthet.

Yours truly dependable partner

With worldwide network, OVM strives continually to provide high quality services to clients and is seeking partnerships in areas of prestressing design for structural engineering projects, provision of prestressing systems, and contracting of special structures.
Diorit Ltd – Sarajevo is the authorized representative of the company OVM – China for Bosnia, Croatia, Serbia, Kosovo and Macedonia.