Pipe Type: Stainless Steel Welded Pipe
Application: In Chemical Industry, Coal, Oil Field Open Machine, Building Materials Heat-resistant Parts
Specification:Outside Diameter: 219mm-3000mm
Wall Thickness: 2mm-60mm
Standard: ASME, EN, GB, ASTM, DIN, JIS, API, GOST
Steel Grades:304, 304/L, 304H, 310/S, 310H, 316, 316L, 321, 321H
Surface: Annealed, Pickling, Polished
Packing: Waterproof Paper Wrapped, Packed in Wooden Cabins
Whats App: 008613761124029
Stainless Steel Welded Pipe
Duplex Welded Stainless Steel Pipe is in the application of Petrochemical and Chemical industry, Onshore and Offshore Oil & Gas field of exploration, production and processing, Pulp and Paper-making industry, Ship Buliding industry, Coal industry and etc. Also used in producing all kinds of conventional weapons, the barrel, artillery shells and so on.
Common Applications for Stainless Steel Tubing Stainless steel tubing has a number of uses in a wide variety of industries. It can be used during manufacturing in processing plants or can become part of a final product. Stainless steel tubing can also be used in pipelines to transport oil, gas, water, or chemicals.
The general features of our DSSP: superior corrision resistance, such as pitting corrosion, crevice corrosion, abrasion corrosion; better weldability and mechanical properties; excellent intergranular corrosion resistance and better cost- effectiveness.
Stainless steel can withstand corrosive or chemical environments due to its smooth surface.
Inspection & Quality Control:
Chemical Composition Analyzing Flattening
Metallographic Test Flare & Flange
Mechanical Properties Test Reverse Bend
Hydraulic Test Reverse Flattening
Non-destructive Test, including X-Ray Flaw Detection Tensile Strength
Dimensional Checking Hardness
Welded Tube Standard Specifications
Welded stainless steel tube is made from long strip or sheet, passed a rolling machine, then the strip edges is welded longitudinally and melt together, using various welding processes, making welding beam is as same as base metal, and form into tube shape.
The sheet width is desired tube outside diameter, the width should be calculated before manufacturing.
Tungsten Inert Gas welding, another name for Gas tungsten arc welding (GTAW), is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas.
Electric Fusion Welding, Electric Fusion Welding (EFW steel pipe) refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt, the formation of the weld. It is mainly used for welding dissimilar steel welding sheet or which high power density, metal weldment can rapidly heated to high temperatures, which can melt any refractory metals and alloys.
Electric Resistance Welding, high-frequency electrical current is passed between the material edges, then the edges are forced together under pressure as a butt joint and then welded by heating the material to high temperatures.
Double Submerged arc welded, similar to other pipe manufacturing processes, the manufacture of Double Submerged Arc Welded Pipe involves first forming steel plates into cylindrical shapes. The edges of the rolled plate are formed so that V-shaped grooves are formed on the interior and exterior surfaces at the location of the seam. The pipe seam is then welded by a single pass of an arc welder on the interior and exterior surfaces.
Longitudinal Submerge-arc Welded, LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.
High Frequency Welding, HFW welded steel pipes are widely preferred in Oil, Natural Gas, Water and other liquids transportation and distribution lines, heating, cooling, ventilation piping and steel structures for construction and other general purposes by means of precise production tolerances and high capacity manufacturing method.
Heat treatment is generally required after manufacture, this process improves stainless steel welded tube properties, help welded tube suitable for wide applications
Welded Tubes Quality Control
All stages from raw material to finished products, tube manufactured under strict quality control, making sure tube having stable mechanical properties, excellent surface finish and high dimensional accuracy.
Standard Testing Optional Testing
Tensile Strength test Ultrasonic test
Flattening test Hydrostatic test
Flare test Air Under Water test
Flange test Grain Size
Dimensional inspection Corrosion test
Hardness test Radiographic test.
Eddy Current test