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Honed steel tube
Honed steel tube is a high- precision steel material by cold drawn or hot rolling process treatment. Because of the precision steel tube inside and outside wall without oxidation layer, under high pressure without leakage, high precision, high finish, cold bending deformation, flaring, flattening...Read more -
Difference between thread pipe and spiral pipe
Thread pipe and spiral pipe are one of welded steel pipe, but both there are essential differences. The form of thread pipe present in the tube end, the majority of the connection tube is used. Particularly in the pipe connections are optional steel pipe, which can be more secure. Thread pipe is ...Read more -
Features of SSAW steel pipe production process
The features of sprial steel pipe (SSAW steel pipe) a. molding process, the steel deformed uniformly, spiral steel pipe, residual stress, the surface does not produce scratches.Spiral steel pipe processing diameter and wall thickness in the range of sizes for greater flexibility, especially in th...Read more -
ERW pipe welding
So-called high-frequency, as opposed to the AC current frequency 50Hz, generally refers to 50KHz ~ 400KHz high frequency current. High-frequency current through the metal conductor will produce two kinds of strange effects: skin effect and proximity effect, high frequency welding pipe(erw pipe) w...Read more -
Galvanized welded steel pipe
Galvanized welded steel pipe is welded steel pipe, which is the pickling after the zinc in galvanized steel galvanized pool. Production processes of galvanized welded steel pipe is coated welding process that first hot-dip galvanized and hot-rolled steel, then galvanized steel coil slitting galva...Read more -
Defects of hot dip galvanized pipe
Defects of hot dip galvanized pipe In the production process and packaging process of hot dip galvanized, the appearance of hot dip galvanized steel strip and steel plate may occur following defects. The excess liquid zinc from galvanized pot on the strip surface, which excess liquid zinc air kni...Read more -
Consequences of seamless steel pipe friction
In the plastic deformation process of seamless steel pipe, the presence of friction is very negative and harmful consequences arising mainly as follows: 1) the presence of the steel pipe to change the distribution of frictional force when deformed, thereby causing the uneven distribution of stres...Read more -
Classfication of seamless pipe
According to the manufacturing process,seamless pipe can be divided into hot-rolled seamless steel tubes and cold-drawn seamless steel pipe two kinds. Cold drawn tube is also divided into circular pipe and shaped pipe. Seamless steel tubes is divided into the following categories because of diffe...Read more -
Constructive Spiral welded steel pipe
Spiral-welded steel pipe through 144 inches (3600 mm), in accordance with the requirements of AWWA C200, ASTM A139, and ASTM A252 Wall thicknesses through one inch Allowable yield strengths up to 70,000 psi Fittings and fabrications to support nearly unlimited joint or body configuration Field-we...Read more -
NOTES ON CHINA’S CURRENT “2019NCOV”
To our customers: At present, the Chinese government is taking the most powerful measures，and everything is under control. Life is normal in most other parts of China by far, with only a few cities like Wuhan affected. I believe it will all return to normal soon. Thanks！Read more -
EFW pipe vs ERW pipe
Electric Fusion Welding(EFW steel pipe) refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt, the formation of the weld. It is mainly used for welding dissim...Read more -
Coal tar epoxy pipe storage methods
1. The principle requires coal tar epoxy pipe stacking under palletizing firm to ensure the safety of the premise, according to achieve varieties, specifications palletizing, different varieties of materials to palletizing respectively, to prevent muddy and mutual erosion; 2.Banned in coal tar ep...Read more