Spiral steel pipe is a steel strip coil plate of raw materials, often warm extrusion molding, with automatic double wire double-sided submerged arc welding of spiral seam pipe.
Spiral steel pipe is made of double automatic submerged arc welding is used for water, gas, air and steam general low-pressure fluid conveying with submerged arc welding steel pipe. Double wire, double-sided submerged arc welding of spiral steel pipe is arc welding method, under the flux layer using welding wire and flux under the flux layer between the burning arc heat, melt welding wire and flux and the base metal.The main characteristics of the product is a double-sided submerged arc welding, not only high deposition rate, and have deep penetrating ability;2 it is arc and weld zone are well protected now, the weld quality, compactness, and weld appearance of level off, smooth, can satisfy the requirements for the performance of weld.Use double-sided automatic submerged arc welding or one side welding into legal system generally low pressure liquid delivery with submerged arc welding steel pipe, used to transport oil, gas, air, water and heating steam and other general low pressure fluid and other purposes of welded steel pipe.Low pressure fluid conveying in welded steel pipe in addition to directly used for conveying fluid, also used as a low voltage large amounts of fluid conveying with galvanized welded steel pipe.
Material: Q235A, Q235B, Q345 (16 mn);Can be customized: L245, L290, X42, X52, X60, X65 and X70.
This standard SY/T5037-2012 for ordinary fluid pipelines;
This standard SY/T5040-2012 used in housing construction, port, bridge foundation pile;
The standard of GB/T3091-2015 used for water, air, steam and gas heating, low pressure fluid conveying;
GB/T9711-2011 oil and gas industry pipeline system (PSL1, PSL2);
API 5 l - 2007 oil and gas industry pipeline system (PSL1, PSL2);
Specification: 219-3620 * 5-30 mm
Double-sided submerged arc welding pipe application:
Double sided spiral submerged arc welding pipe is mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction.For liquid transportation, water supply and drainage.For gas, gas, steam, liquefied petroleum gas.For structure: piling pipe, bridge;Dock, road, building structural tube, etc.
Spiral steel pipe main technical characteristics:
A. forming process, the steel plate uniform deformation, residual stress is small, the surface does not produce scratches.Processing spiral steel pipe on the scope of the size of diameter and wall thickness is more flexibility, especially in the production of high grade thick wall tube, especially small and medium caliber thick wall tube has incomparable advantage over other techniques, can meet the requirements of users in the aspect of spiral steel pipe specifications more.
B. using advanced double-sided submerged arc welding process, can be in the right position for welding, is not easy to appear the wrong side and defects such as lack of penetration, welding, welding quality easy to control.
C. 100% quality inspections for steel pipe, make the whole process of steel pipe production are under effective detection, monitoring, effectively guaranteed the product quality.
D. the whole production line all equipment with the function of the computer data acquisition system networking, realize the data real-time transmission, by the central control room of the technical parameters in the process of production.