ADTO WULIAN

Seamless steel pipe , as the name suggests, is a pipe without a seam or a weld-joint. Seam steel pipe are generally welded with a seam. 1. Different Processing Technology: seamless steel pipe is made of high quality carbon steel or alloy steel. The processing technology of seamless steel pipes are cold drawn and hot rolled, and seam steel pipe are generally welded. 2. Different Uses: seamless steel pipes are mainly used as pipelines for conveying fluids, or structural parts in machinery industry, and seam steel pipes are mainly used in construction industry, such as low-pressure fluid, like water, gas, compressed air. But when must to use pressure pipes, seamless steel pipes is the better choice. 3. Different Pressure-bearing: the maximum working pressure that the seamed pipe can withstand is within 20 kg, which is the safest range of use. It is generally used for low-pressure fluids such as water, gas, and compressed air. Seamless steel pipe can withstand ultra-high pre...

The hot expanding steel pipe is  hot expanded seamless pipes , which is relatively low density but the contraction of the strong steel pipe (seamless pipe) can be referred to as thermal expansion. A process of skew rolling or drawing method to expand the pipe diameter. Steel pipe thickening in a short period of time, can produce non-standard and special types of seamless tubes with low-cost and high production efficiency, the current international developments in the field of tube rolling. Hot expand pipe is by expanding the diameter of pipe to finish processes - thermal expansion process of the production of steel pipe. Hot expansion pipe are commonly referred to hot expanded seamless steel pipes. So far, the thermal expansion carbon steel pipe production technology is relatively mature, the level of equipment and methods of thermal processing also has made substantial progress. From billet to the basic technological principle is still tube rotary piercing or pressu...

Seamless steel pipe is made of a single piece of metal without seams on the surface.  According to the production method, seamless steel pipe are divided into hot rolled pipes, cold rolled pipes, cold drawn pipes, extruded pipes, and jacked pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special. Special-shaped pipes include square, oval, triangle, hexagon, melon, star, and finned pipes. The maximum diameter is 650mm and the minimum diameter is 0.3mm. Depending on the application, there are thick-walled pipes and thin-walled pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler tubes, bearing tubes, and high-precision structural steel pipes for automobiles, tractors, and aviation. Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel pipe in China. We specializes in manufa...

In the early days, plywood is mainly used in the construction of large projects, such as helping building the cast in place concrete structure. But now, its application field has already developed to household industry as the invention of  bintanger commercial plywood . The bintanger commercial plywood is becoming more and more popular now, not only in the big construction project, but also the ambry and wall decoration now. It popularity is inseparable from the following four advantages: 1、Easy to Process In recent years, the technology of processing and manufacturing industry has became mature. What followed is the diversity of processing methods. This makes the temporary retreatment of bintanger commercial plywood in the construction site becomes more convenient, they are no longer limited to the large area project but can be cut into other shapes and play a valuable role in small-scale construction. At the same time, the production technology of bintanger commercial plywo...