PT.Sinartech Multi Perkasa adalah perusahaan yang bergerak di bidang konstruksi manufactur,rekayasa dan konsultan, yang pengerjaannya meliputi EPC (Engineering Procurement Construction) serta OPC (Operational Procerement Construction), secara khusus pada pengerjaan PALM OIL MILL, KERNEL CRUSHING PLANT,REFINERY PLANT,CRUMB RUBBER FACTORY.PT.Sinartech Multi Perkasa berdiri pada tahun 2014 yang merupakan GROUP dari PT.Nasatech Sukses Abadi yang telah berdiri pada tahun 2013
Call/WA : 08116062065 | 08116562065 | 08116549994 | 08116369090 | 08126067928
Phone : (061) 42068877 | 08126067928
Fax : (061) 42068877
Email : firstname.lastname@example.org
PT sinartech multi perkasa
PT nasatech sukses abadi
Jl.Primer No 12 pasar 9 helvetia marelan 20250 medan sumut indonesia
crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy things and transporting them to other places. The device uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in the transport industry for the loading and unloading of freight, in the construction industry for the movement of materials, and in the manufacturing industry for the assembling of heavy equipment. The first known construction cranes were invented by the Ancient Greeks and were powered by men or beasts of burden, such as donkeys. These cranes were used for the construction of tall buildings. Larger cranes were later developed, employing the use of human treadwheels, permitting the lifting of heavier weights. In the High Middle Ages, harbour cranes were introduced to load and unload ships and assist with their construction – some were built into stone towers for extra strength and stability. The earliest cranes were constructed from wood, but cast iron, iron and steel took over with the coming of the Industrial Revolution.
For many centuries, power was supplied by the physical exertion of men or animals, although hoists in watermills and windmills could be driven by the harnessed natural power. The first 'mechanical' power was provided by steam engines, the earliest steam crane being introduced in the 18th or 19th century, with many remaining in use well into the late 20th century.  Modern cranes usually use internal combustion engines or electric motors and hydraulic systems to provide a much greater lifting capability than was previously possible, although manual cranes are still utilized where the provision of power would be uneconomic. Cranes exist in an enormous variety of forms – each tailored to a specific use. Sizes range from the smallest jib cranes, used inside workshops, to the tallest tower cranes, used for constructing high buildings. Mini-cranes are also used for constructing high buildings, in order to facilitate constructions by reaching tight spaces. Finally, we can find larger floating cranes, generally used to build oil rigs and salvage sunken ships. Some lifting machines do not strictly fit the above definition of a crane, but are generally known as cranes, such as stacker cranes and loader cranes.
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