Steel pipe pile consists of steel pipe, tongue and groove pin. The left pipe wall of the steel pipe diameter is vertically connected with a box-shaped tongue-and-groove whose cross section is open at one side, and the side of the tongue-and-groove is provided with reinforcing ribs. The right pipe wall of the steel pipe diameter is vertically connected with a tongue-and-groove pin at a position deviating from the radial direction, and the groove section of the tongue-and-groove pin is I-shaped. When the cofferdam is used, the steel pipe piles overlap each other in arc or circle. Can play the role of enclosing water, soil and sand. The utility model has the advantages of novel design, simple structure, convenient use, easy overlapping and good sealing performance. Include non-circular cross-sectional profile, equal wall thickness, variable wall thickness, variable diameter and variable wall thickness along the length direction, symmetric and asymmetric cross-sections, etc. Such as square, rectangle, cone, trapezoid, spiral tube, etc.
Special-shaped steel pipe can better adapt to the particularity of service conditions, save metal and improve the labor productivity of parts manufacturing. Widely used in aviation, automobile, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing. The methods of producing special-shaped pipes include cold drawing, electric welding, extrusion and hot rolling. Among them, cold drawing method has been widely used.
Steel pipe pile is the foundation suitable for wharf and port construction, with a diameter of 600 ~ 2000mm, and the most commonly used one is1800 mm. At present, Tianjin Port and Shipping Installation Engineering Co., Ltd., a subsidiary of China Communications Group, is the best one in China. See below for details. At present, many piles used in large-scale domestic projects have the share of this company. According to friends, the processing capacity is quite large, which should exceed 654.38+10,000 tons a year. At present, there are two factories with an area of about 6.5438+0.2 million square meters, and a larger factory of 400,000 square meters is being planned in Lingang Industrial Zone of Tianjin Binhai New Area. Its business scope has spread to almost all coastal cities in China, including Africa, Oceania and other foreign places.
1, Caofeidian 300,000-dwt crude oil wharf Phase I, Caofeidian 300,000-dwt crude oil wharf Phase II, Caofeidian 300,000-dwt crude oil wharf Phase III, Yingkou Bayuquan Port, Jinzhou Port, Tianjin Port Ore Wharf, Tianjin Port Nanjiang Bulk Cargo Wharf Steel Pipe Pile Splicing Site, Tianjin Port East Pier Wharf and Bayuquan Phase III 5/kloc-0-53 Container Berth Project.
Tianjin Port and Navigation Installation Engineering Co., Ltd. is a joint-stock enterprise jointly funded by China Communications (China Communications Construction Group), First Aviation Bureau, First Company and Tianjin Port Electromechanical Equipment Installation Company. It is an emerging advantage enterprise jointly established by state-owned enterprises and private enterprises, with strong comprehensive strength and market competitiveness. The original enterprise has a history of 60 years, and has undertaken mechanical and electrical equipment installation, steel structure installation, pipeline installation, anti-corrosion and thermal insulation projects all over Asia, Africa, Europe and other countries and regions in China. The project has been rated as national, provincial and regional high-quality projects for many times and has been highly praised by the owners. Business scope of the company: general contracting of electromechanical installation engineering, general contracting of electromechanical equipment installation engineering, general contracting of steel structure engineering, general contracting of environmental protection engineering, general contracting of pipeline installation engineering of chemical and petroleum equipment, general contracting of anti-corrosion and thermal insulation engineering, mechanical equipment repair, ship repair and labor service; Equipment leasing; Technical consulting services for civil engineering construction; Manufacture and installation of offshore engineering steel structures and modules; Deck machinery manufacturing and installation; Manufacture and installation of ship outfitting; Manufacture and installation of ship pipelines; Business scope of manufacturing and installation of lifting equipment.