1. Large-diameter stainless steel pipes can be categorized into oil well pipes (casing, tubing, and drill pipe, etc.), pipeline pipes, boiler pipes, mechanical structure pipes, hydraulic support pipes, gas cylinder pipes, geological pipes, chemical pipes (high-pressure fertilizer pipes, petroleum cr Read More

‍The properties of stainless steel are obtained through the unique alloy composition, in which chromium plays a leading role. Chromium combines with oxygen to form an extremely thin and extremely hard chromium oxide film, which protects the underlying stainless steel. In the presence of a chromium o Read More

First, what is the role of oil casing in oil drilling?Surface casing: Installed at the top, it suspends and supports subsequent casing layers; it isolates shallow surface water layers from complex shallow subsurface layers, preventing freshwater contamination by drilling fluid.Intermediate casing (t Read More

1. Common methods for external corrosion protection of steel pipes:Using the cathodic protection method alone is not economical due to the large power consumption. Therefore, the combined protection of the anti-corrosion layer and cathodic protection, the cathodic protection that will be concentrate Read More

1. It is necessary to store the spiral steel pipe in the warehouse, not to store it in the open air, and it is necessary to ensure that the storage in the warehouse is clean. Clean and well drained. If there are weeds or other debris on the ground, it needs to be cleaned and stored. This is to keep Read More

Series of diameters specified in the standard for straight seam steel pipes: the nominal diameter of straight seam steel pipes refers to the series of diameters specified in the standards for straight seam steel pipes. For straight seam steel pipes, pipe fittings, valves, etc., the nominal straight Read More

The difference between ERW (straight seam electric resistance welded) steel pipe and HFW (high frequency welded) steel pipe is mainly the principle.As the name implies, resistance welding is a method in which pressure is applied through electrodes after the weldment is combined, and the resistance h Read More

There are various connection methods for stainless steel pipes. Common pipe fitting types include compression type, compression type, union type, push type, push thread type, socket welding type, union flange connection, welding type and welding and traditional connection. They combined derived seri Read More

There will be rust spots on the stainless steel pipe elbow, which means that the elbow is not made of pure stainless steel, but an electroplated stainless steel elbow. The rust spots can be polished with ultra-fine sandpaper and then sprayed with colorless varnish for anti-rust treatment. It is read Read More

A rectangular tube refers to a hollow, long, and generally straight structure with a rectangular cross-section. It is similar to a rectangular prism but with open ends. Rectangular tubes are commonly used in construction, engineering, and various applications where structural support, strength, and Read More