Changsha Xiangjia Metal Materical Co., Ltd.

Seamless tube   is a long strip of steel with a hollow section and no seams around it. Currently, there are more than 110 countries produce seamless tubes  in the world.   Xiangjia   is a steel pipe manufacturer in the thousands of producer. Here we'd like to talk about the characteristics of seamless tube: First, the thicker the wall thickness of the product, the more economical and practical it is. However, the thinner wall process makes the cost higher; Secondly, the process of this product determines its limited performance. Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness, high cost of fixed-length, and pits and black spots. Third, the detection and shaping must be processed offline. Therefore, its superiority refect on high pressure, high strength, and mechanical structural materials.

As a conveying pipe, steel pipe can be widely used to transport oil, gas, water, and other fluids. So steel pipe is known as the "blood vessel" of industry. Steel pipe is an important material in the military industry, which can be used to manufacture gun barrels, barrels, and other weapons. With the development of aviation, missile, atomic energy, and space technology, the demand for precision, thin wall, and high strength steel pipe is increasing rapidly. A steel pipe made of a single piece of metal without any welding cracks on the surface is called "seamless steel pipe". According to the different production modes, it can be divided into cold rolled pipe, hot rolled pipe, extrusion pipe, pipe jacking, cold drawn pipe, and other types. When purchasing  seamless steel pipes , I believe that everyone has a misunderstanding: expensive is good! But in many cases, we will spend a lot of money but never achieve the desired effect. Seamless steel pipe with excellent te

Currently, more than 85% of the world's crude oil and 99% of natural gas are transported through pipelines. The total mileage of oil and gas pipelines has exceeded 3.8 million kilometers. Compared with railway, road, waterway and air transportation,   pipeline transportation   has the following characteristics: ①High efficiency. The annual transport capacity of a 1220mm pipeline is about 100 million tons, which is equivalent to the annual transport capacity of two double-track railways. ②Low cost. The cost of transporting the same amount of petroleum products is less than half of rail transport. ③ Strong continuity. The use of closed conveying can continuous and stable operation for a long time. ④The square tube is easy to manage. It able to remote centralized control, the system automation degree is high, and the equipment maintenance is small. Pipeline transportation also has its limitations. It is not flexible and convenient as ships and other transportation, and the products th

 1. Seamless Steel Pipe  The typical method for making  seamless tubes  is the Mannesmann method, in which a rod-like billet is heated to a high temperature, and then compressed from the periphery and perforated at the center using a tool called a "perforating mandrel". This manufacturing method is suitable for mass production. It can make large diameter steel pipe and is also suitable for thick wall steel pipe. Because there are no joints, the original properties of the material can be maintained. However, in terms of manufacturing methods, the dimensional accuracy is not very good. 2. Welded Steel Pipe  The material of  welded pipe  does not use bar billets but uses steel strips (coils). For example, for seam pipe welded with resistance welding, the process is to use the uncoiler to continuously pull out the steel strip and make it cylindric. The joint part of the cylinder is changed into a high-temperature state with a large current, and the joint is welded by strong rolli