Dredging steel pipe introduction
Dredging steel pipes are mainly used for cleaning steel pipelines that transport sediment, mud and other mixed debris.
Dredging is a project for dredging, widening or deepening the waters of rivers and lakes, and excavating submarine earth and stone with manpower or machinery. Dredging in the broad sense includes blasting reefs, blasting beaches, etc., which are carried out by blasting under water. Manual excavation is only applicable to small rivers that can be interrupted by construction. Mechanical dredgers are widely used in mechanical construction, and land-based construction machines such as rope shovels are sometimes used. Mechanical dredging began in 1600 with the appearance of chain bucket dredgers in the construction of the Port of Rotterdam, the Netherlands. China began construction of dredgers in the Huangpu River in 1889. In 1929, Jiangnan Shipyard caused chain bucket dredgers. In the early 1980s, China had an annual dredging capacity of about 300 million cubic meters of mechanical dredging.
Dredging steel pipe is widely used in beaches, rivers, waterways, urban environmental protection, construction and other fields.
The main use of steel pipe
Mainly spiral steel pipe, seamless steel pipe and straight seam steel pipe.
Seamless steel pipe
Tube Blanks - Inspection - Peeling - Inspection - Heating - Perforation - Pickling - Mushroom Trimming - Air Drying - Welding Head - Cold Drawing - Solution Treatment - Pickling - Pickling Passivation - Inspection
Welded steel pipe
Strip - Inspection - Shear - Length - Qualitative - Welding - Smoothing (Seamless) - Length - Inspection
1 dredgers, according to the principle of work and soil material delivery, mechanical and hydraulic. Mechanical dredgers use buckets or shovels to dig and lift earth materials directly from underwater, such as chain buckets, grabs, buckets, and bucket wheels. Hydraulic dredgers use high-pressure water to dredge mud or use reamers and boring heads to cut mud, and then use slurry pumps to pump mud. They are discharged through dredged steel pipes and are also called suction dredgers. They are cutter-type and suction-type. , no reamer type, pneumatic type, etc. Dredging vessels are also classified as self-propelled and non-self-propelled. Non-self-propelled vessels are required to be hauled by tugboats.
2 Water work boats, such as survey boats, crane vessels, drills and ships, anchor boats, etc.
(3) Auxiliary ships, including tugboats, oil tankers, freshwater pontoons, etc., supply vessels, mud barges, barges, and life boats.
4 floats, pipes and other ancillary equipment. When dredging equipment is selected, the main dredger is selected first, and then it is equipped with other auxiliary ships to form a dredging fleet.