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Reasons for the rust of spiral welded pipe
Spiral welded pipes (ssaw) are stacked outdoors, and most of them are buried underground when in use, so they are easy to corrode and rust. In order to ensure the smooth flow of the pipeline, the spiral welded pipe must have strong corrosion resistance. Once the pipeline is corroded, it will caus...Read more -
How to choose seamless pipe, welded pipe and forged pipe?
When you’re first looking for steel pipe, whether for a desalination plant, an oil rig, or a nuclear power plant, the first question you need to ask yourself is “do I need seamless, welded, or forged “pipes”?” These three Each type has different benefits and is there...Read more -
Thick-walled Uneven of Seamless Steel Pipe
Thick-walled uneven of seamless steel pipe 1, During the perforation of seamless steel tubes extending coefficient is too large, roll speed is too high, rolling stable. 2, Throwing punch steel capillary instability could easily lead to the tail of uneven thickness. 3, Seamless steel tube tip cut ...Read more -
Steel Pipe Heat Nubmer
Heat number: it is a steel smelting furnace number of times with unique, traceability. Different mills have different numbering, but each furnace steel must be a number. Heat number is divided into furnace number and batch number, the furnace “means a furnace where the steel manufacturing p...Read more -
How to identify the quality of large diameter spiral welded pipe？
Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is a low-carbon structural steel or low-alloy structural steel strip rolled into a tube blank at a certain helical angle (called a forming angle), also known as a spiral tube or a spiral body. The outer diameter of the spiral tub...Read more -
Common surface defects of seamless tubes
Common outer surface defects of seamless tubes (smls): 1. Folding defect Irregular distribution: If mold slag remains locally on the surface of the continuous casting slab, deep folding defects will appear on the outer surface of the rolled tube, and they will be distributed longitudinally, and &...Read more
