• Post time: Jul-09-2020

    Disadvantages cf hot rolled steel After hot rolling, the non-metallic inclusions In the steel are pressed into plates, and delamination occurs. Due to the tensile properties, the delamination of the steel in the thickness direction is significantly deteriorated, and may occur in the tearing betwe...Čítajte viac »

  • Post time: Jul-03-2020

    The welding method of thick-walled steel pipe should be selected according to the material and wall thickness of the thick-walled steel pipe. Because different welding methods have different arc heat and arc force, they also have different characteristics. The characteristics of tungsten arc weld...Čítajte viac »

  • Post time: Jun-19-2020

    1.There is thick dense zinc layer covered in the cold drawn seamless tube surface, it can avoid cold drawn seamless tube matrix and any contact with the corrosion solution to protect the steel matrix from corrosion. In the general atmosphere, the surface of the zinc layer to form a layer of thin ...Čítajte viac »

  • Post time: Jun-16-2020

    Austentc thin-walled stainless steel pipes refe to stainless steel pipes with a wall thicktness outer dameter ratio of not more than 6%. The thin-walled stainless steel pipes and fittings for building water supply contain chromlum (Cr ) content of more than 12%, and the ferroalloys with austenite...Čítajte viac »

  • Post time: May-27-2020

    What are the factors related to the tightness of the inner coating and the tube? The type of heating equipment, heating method, fuel type, heating temperature, fineness of plastic powder; additive composition, etc. will all have a certain impact, but the key is still the external pretreatment. Un...Čítajte viac »

  • Post time: May-19-2020

    How to polish stainless Steel Pipe? 1.Grind down any welds that are still on the pipe. Use a grinding disc and grinder for this task. 2.Mount the pipe into a pipe vise or similar set-up. If you don’t have a professional pipe vise, you can use a regular vise wrapped with a towel or fitting w...Čítajte viac »

  • Post time: May-11-2020

    Butt welding flange is that the diameter and wall thickness of the interface end are the same as the pipe to be welded, just like the two pipes. The flat welding flange is a recess that is slightly larger than the outer diameter of the pipe at the interface, and the pipe is inserted and welded. B...Čítajte viac »

  • Post time: Apr-28-2020

    1.Welding process From the welding process, the welding method of galvanized spiral welded pipe and galvanized straight seam steel pipe are the same, but the straight seam welded pipe inevitably has many T-shaped welds, so the occurrence of welding defects is also greatly improved. Moreover; the ...Čítajte viac »

  • Post time: Apr-21-2020

    1.Spiral steel pipes of fixed length may not be bundled. 2.If the two ends of the spiral steel pipe are threaded, they should be protected by thread protectors. Apply lubricating oil or rust inhibitor to the screw. The openings at both ends of the spiral steel pipe can be equipped with nozzle pro...Čítajte viac »

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