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CONCRETE PIPES AND MANHOLESwww.cpi-worldwide.com CPI %u2013 Concrete Plant International %u2013 4 | 2025 109pipeline construction and later the production of concrete pipes and ready-mix concrete. From 2006, the company also entered the commercial concrete and mining sector. The decisive breakthrough came in 2013, when it supplied concrete for a major project at the Samsung production facility in Th%u00e1i Nguy%u00ean province. Viet Cuong began manufacturing precast concrete elements and decided to order its first concrete pipe production line in 2017. Even back then, the choice fell on a Prinzing Pfeiffer system %u2013 the Variant 2500D (double station) machine for manufacturing concrete pipes and box culverts. The powerful central vibrator, which ensures very high, uniform concrete compaction and product quality, was particularly impressive at the time due to its reliability, low operating costs and customized machine-and-form concept, supported by excellent technical service. The Variant 2500D is still in successful operation today. In addition to concrete pipes, this machine is also used to produce box culverts.Technology at a particularly high level %u2013 the RP 1225-4 Radial PressViet Cuong is sending a clear signal by acquiring a new Radial Press RP. The company is gearing up for future large-scale infrastructure projects and increasing its production capacity significantly. The fully automatic RP 1225-4 system is designed to produce concrete pipes in the DN 300 to DN 1200 diameter range %u2013 both versions with and without a bell end, in accordance with the Vietnamese standard. The RP is also compatible with many other national and international standards (e.g. EN, ASTM, BS). Special products such as manholes, simple manhole bases, Rocker pipes, jacking- and slotted drainpipes can also be manufactured. A highlight of the RP 1225-4 is its innovative concrete compaction process, consisting of two counter-rotating pressing tools and a fully automated compaction control system. These enable homogeneous, dense pipe structures with outstanding surface quality. Employing two outer moulds permits parallel production cycles, resulting in reduced cycle times. Additional system highlights are:%u2022 Decoupling of the production- and the demoulding process. High dimensional accuracy of the end products by transporting the fresh product in the outer mould to the demoulding area%u2022 Low foundation depth%u2022 Modular design and compact frame construction%u2022 High drive power to produce thick-walled and/ or double-reinforced pipes %u2022 Precise Centering of reinforcement cages using pneumatic cage centering devices on the outer moulds %u2022 Height-adjustable working table for varying pipe lengths%u2022 Many additional options can be selected, such as data analysis and reporting to provide all relevant production data and statistics, Smart Check for regular and professional system inspections, QCS quick-change system for semi-automated nominal size change, Skip hoist with concrete hopper, e.g. for production with low concrete transfer height. Radial Press RP 1225-4 after installation process Beginning with commissioning