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NEWS
2021/11/12
Large mouth straight seam steel pipe is a spiral seam steel pipe made of amorphous strip fan coil as raw material, using full-automatic multi-line double-sided submerged arc welding, and often using warm extrusion processing and full-automatic multi-line double-sided submerged arc welding. Raw materials are amorphous strip, cable, flux. They must undergo rigorous physical and chemical testing before they can be loaded in. Wire drawing submerged arc welding or double-wire submerged arc welding shall be used for the head and tail of hot-rolled strip, and full-automatic submerged arc welding shall be used for repairing electric welding after the wire rewinding machine enters the steel pipe. Before forming, smooth, laser cut and polish the amorphous strip, clean and transport the surface, and solve the bending edge.
2021/11/12
Stainless steel welded pipe has excellent compressive ability, corrosion resistance, resistance to intergranular corrosion, etc., so it is widely used in major industries. Among them, large diameter stainless steel welded pipe is also increasingly favored by various fields. In the past, seamless pipes used to be "without two heads", but because the product cost is expensive and the performance is difficult to achieve the regulations, stainless steel welded pipes can completely replace seamless pipes under the improvement of welding technology. Stainless steel welded pipes can be made into thick-walled pipes under the condition that their performance will not change, thus greatly reducing the cost. What industries will use large-diameter stainless steel welded pipes? The petroleum industry and organic fertilizer industry have a huge demand for large-diameter stainless steel welded pipes, which are actually used in furnace bodies, raw material delivery pipes, heat exchanger pipes, etc. Large diameter stainless steel welded pipe is the best basic water treatment material in today's society. For large and medium-sized water system software, stainless steel welded pipe has strong corrosion resistance. It is incomparable to cast iron drainage pipe, galvanized steel pipe, plastic hose, etc. It is the best choice for industrial water treatment such as water preparation, storage, transportation, purification treatment, reengineering, seawater desalination equipment and so on. For the food industry, the transportation pipeline has very high health and safety regulations for the material itself, and the key is to choose the environmental health grade or antibacterial grade large diameter stainless steel welded pipe.
