Tianjin Xinyue Steel

Factory casing process: Steel ingot heating, hydraulic piercing, reheating, elongation, periodic rolling, reheating, sizing, cooling, straightening, pipe cutting and inspection. Ingot heating: 216 mm cycle tube mill and annular furnace, 318 mm cycle tube rolling mill original design and two circular furnaces. Hydraulic punching: 216mm is 10kN hydraulic press, 18318mm punch press is made by 18kN hydraulic press. Extension: the oil and casing factory is using two roller guide extensions. Reheat: use tray furnace, use rolling mill cycle, then do not use heat to enter the furnace. Selection: using a double - roll 5 - stand sizing machine. Oil casing cold bed is a one-way chain cold bed. 216mm circulating rolling mill product specifications 114.3 to 319mm, wall thickness 6 to 40mm; 318mm circulating rolling unit rolling product specifications 168 to 377mm, wall thickness 6 to 40mm. As an oil well pipe, all kinds of casing and some drill pipes can be produced. In order to ...

How to distinguish the good from the bad of thick - walled   seamless tube ? There are six ways to do this: 1, high quality composition is uniform, the thick wall seamless tube cold shearing machine high tonnage, cutting head end face smooth and neat, and shoddy material because the material is poor, cutting head end face often have meat, or uneven, and no metallic luster. And because the manufacturer of fake and inferior materials products cut the head less, the head and tail will appear big ears. 2. The pseudo-thick-walled seamless tube has no metallic luster and is of a reddish color or similar color to pig iron, for two reasons, its billets are adobe. The temperature of the fake and inferior materials is not standard, and their steel temperature is measured visually, so they cannot be rolled in accordance with the specified austenite area, and the performance of the thick wall seamless pipe cannot reach the standard naturally. 3, and inferior thick-walled seamless tube...

Galvanized steel is just steel that has been galvanized on it's surfaces which coated with a zinc layer, providing a substantial amount of protection from corrosion. Steel pipes made from galvanized steel are able to resist corrosion, withstand harsh weather, and are stronger and lighter than many other pipes. There comes the question: Will the   galvanized steel pipe   rust? To understand the question, we should learn about the principle their manufacturing and rust protection. Galvanized pipes can be divided into hot-dipping galvanized pipe and electro-dipped pipes according to the manufacturing methods. hot-dipped galvanizing is produced by dipping ordinary steel into a pool of molten zinc. But for electro-galvanizing, the steel is dipped into an electrolyte solution containing zinc and makes use of electrolysis to create the corrosion resistance coating. Galvanizing is process of coating zinc over steel. Zinc coating normally melts at 850 to 900F & vaporizes at ...

General welded pipe is used for transporting low pressure liquid. Use Q195A, Q215A, Q235A steel manufacturing. Also can be used to other mild steel welding manufacturing.   Welded steel pipe   for pressure, bending, flattening and so on experiment, the surface quality is a certain request, usually the delivery length is from 4 to 10 m, which often required scale delivery of the goods. Of the specifications of the welded steel pipe in nominal diameter nominal diameter is different from the actual, welded pipe with wall thickness by the regulation with ordinary steel pipe and thickening structural steel pipe, steel pipe and the form of the pipe end points with thread and don't take two. Galvanized steel pipe, in order to improve the corrosion resistance of steel tube, for galvanized welded steel pipe commonly. Zinc galvanization steel tube hot dip galvanized and electrical steel, hot dip galvanized zinc coating thickness, the cost of electric is low. Oxygen tube welding is ...