Hot-rolled steel sheet pile was initially used in Europe at the beginning of the 20th century and is now a proven technology in foreign countries. But in China, this technology is still at its early stage. With the apid growth of Chinese economy, this environmentally friendly new building material will inevitably be widely used.
Depending on their production process, steel sheet pile products are divided into cold-bent and hot-rolled piles which bring out the best in each other and have their own advantages. In the past years, the market has given priority to hot-rolled steel sheet pile of which the processing method and information can be found everywhere that has been widely recognized. Cold-bent steel sheet pile is formed by cold-bending machine set through rolling depression, and its side interlock could be continually connected to form a steel structure of sheet-pile wall. Though, produced by a different working method, the use of cold-bent steel sheet pile is similar to that of hot rolled steel sheet pile while their scopes of application are different to some extent. Throughout the years, cold bent steel sheet piles have been widely used, and broad operation experience has been accumulated.
Nanjing Grand Steel Sheet Pile Co., Ltd is a key enterprise of China being engaged the research & development, design, production and service of cold-rolled forming section. Grand developed and produced China’s first piece of cold-bent steel sheet pile with a section modulus of 1360cm3 in October 2006 and was then expanded to have established an annual production capacity of 400,000 tons of cold-bent steel sheet piles.
Grand has been engaged in the research & development of cold-bent steel sheet piles according to EN standards (EN 10249: non-alloy cold-bent steel sheet pile) and now rank among leading cold-bent steel sheet pile manufacturers of the world at present. Furthermore, Grand has built up its own brand in the field of steel sheet pile, and its GP series cold-bent steel sheet piles have been used in a number of key projects at home and abroad. GP series products that feature outstanding section modulus and large moment of inertia can be widely used for both general retaining wall and basic structures and for ports, piers, river bank reinforcement and land and water foundation pit protection structures projects etc.
During its development in the past years, Grand has given full play to its own cold-rolled forming section development technology and improved the structures of lots of combined steel sheet piles, contributing to more rational project design and construction and more remarkable economic benefit; in the meantime, in order to better satisfy the requirements of individual customers, most cold-bent steel sheet piles of Grand are integrated with personalized design according to foundation conditions.
Grand can now produce GPU and GPZ series cold-bent steel sheet piles of over 80 specifications with the maximum section modulus of up to 6000 cm3/m and a maximum thickness of 16mm. When the section modulus of our product is the same with that of hot-rolled steel sheet pile, the steel consumption per square meter would decrease by 10%~15%, and this means sharp reduction of construction cost; in this way, the concept of “environmentally friendly, energy-saving and high-efficiency new-style building material” is realized.
Nanjing Grand Steel Sheet Pile Co., Ltd has established an overall service system for complete and sophisticated design, production, technical support and construction. With the support from top-class research institutes and universities (colleges) in the field of engineering of China, our technology sections can provide all services that a leading cold-bent steel sheet pile manufacturer should be able to offer, and can provide technical support for any step during steel sheet pile engineering, offering targeted and effective technical service taking into account various needs of customers.