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During the heating and cooling process of the cold drawn seamless steel pipe, due to the inconsistency between the cooling rate and the time of the surface layer and the core, a temperature difference...

1. Capillary tube The wall thickness of the capillary tube should be uniform, and the surface defects on the inner and outer surfaces should be small; the outer surface polishing and inner hole defect...

Austempering is one of the effective quenching methods for reducing the deformation and cracking of seamed steel pipes (straight seam steel pipes , spiral steel pipes and erw steel pipes) and seamless...

The cleanliness and smoothness of the surface of the seamless steel pipe is a requirement for the selection of a seamless steel pipe. The cleanliness of the surface of the seamless steel pipe has beco...

Pipe fluid seamless pipe cutting methods include shearing, breaking, sawing, flame cutting and anode cutting. Their characteristics are as follows: (1) Flame cutting method: This cutting method has t...

The seamless expansion of the seamless steel tube is pided into an overall thermal expansion treatment, a surface thermal expansion treatment, and a chemical heat treatment. The seamless expansion of ...

Stainless steel seamless pipe is a long strip of steel with a hollow section and no joints around it. The characteristics of stainless steel seamless pipe: First, the thicker the wall thickness of th...

There are more than 60 sets of extrusion units in the world. Except for a few for profile extrusion, 70% of the units are used for the production of steel pipes. The main type is stainless steel pipes...

Hot-dip galvanized steel pipe: reacts a molten metal with an iron matrix to produce an alloy layer, thereby combining the substrate and the plating layer. Hot-dip galvanizing is to pickle the steel pi...

Seamless steel pipes and welded pipes are mainly formed by different molding processes. Ordinary steel pipes, such as tap water pipes, are usually welded by bending the flat plate. You can find a weld...