Changsha Xiangjia Metal Materical Co., Ltd.

In the modern industrial landscape, the efficiency and safety of boiler systems are paramount. Among the crucial components that facilitate these operations are   seamless steel pipes . This post delves into the categorization of seamless steel pipes specifically used for high-pressure applications, presenting their composition, structural integrity, and testing requirements. For high-pressure boiler systems, seamless steel pipes constructed from high-quality carbon structural steel, alloy structural steel, and stainless heat-resistant steel are critical. These pipes are specifically designed to endure extreme conditions, typically operating under elevated temperature and pressure. The rigorous environment in which high-pressure boiler tubes function exposes them to oxidation and corrosion due to high-temperature flue gas and water vapor. As such, it is essential that these steel pipes exhibit high lasting strength, remarkable oxidation resistance, and excellent organizational stab...

Seamless steel pipes   play a significant role in the construction of various low and medium pressure boiler tube. They are utilized to manufacture essential components such as superheated steam pipes, boiling water pipes, water-cooled wall pipes, and large or small smoke pipes. For locomotive boiler tube, arch brick pipes are also crafted from seamless steel. The manufacturing of these boiler tubes predominantly employs high-quality carbon structural steel, primarily utilizing steel grades No. 10 and No. 20. Beyond ensuring the right chemical composition and mechanical properties, several rigorous tests are mandated. These tests include hydrostatic tests, curling, flaring, and flattening to assess the integrity and durability of the pipes. It is important to note that seamless steel pipes can be categorized into two distinct types: hot-rolled and cold-rolled (also known as dialed) products. Hot-rolled seamless steel pipes are delivered in a hot-rolled state, whereas their cold-rol...

When it comes to the choice of materials for piping systems,   seamless steel pipes   emerge as a superior option due to a number of inherent advantages. Understanding the benefits of these pipes is essential for industries that require reliable and durable piping solutions. This article delves into the key characteristics of seamless steel pipes, with a focus on their strength, corrosion resistance, and aesthetic appeal. Unmatched Strength and Pressure Resistance One of the greatest advantages of seamless steel pipes is their remarkable ability to resist pressure. Unlike welded pipes, seamless pipes have no seams, making them inherently stronger and more resilient under pressure. This characteristic simplifies pressure calculations, as there is no need to account for weld quality, which can often be flawed in welded pipes. Consequently, for applications where strength and reliability are non-negotiable, seamless steel pipes are the clear choice. Visual Appeal and Installation...

The main difference between   seamless steel pipe   annealing and non-annealing lies in their organizational structure, hardness, machinability, and corrosion resistance. Structural organization and performance transformation: After the seamless steel pipe undergoes annealing treatment, its organizational structure will change. For example, annealing can reduce the hardness of the steel pipe, increase plasticity, enhance machinability, and corrosion resistance. While the steel pipe that has not been annealed may have higher hardness and strength, but it is difficult to process and handle. Annealing types: The annealing of seamless steel pipe includes full annealing, spheroidizing annealing, stress-relief annealing, etc. Full annealing aims to reduce the hardness of seamless steel pipe and eliminate the non-uniform organization and internal stress in the steel. For spheroidizing annealing, the seamless steel pipe needs to be heated to 750 degrees, held for a period of time and ...

According to the different   seamless steel pipe   production processes, seamless steel pipe production equipment can be used in a variety of ways. However, whether rolling, extrusion, top pressing or spinning and other seamless steel pipe manufacturing processes are used, billet heating equipment is required. Therefore, in the seamless steel pipe production equipment, the billet heating equipment is particularly critical. Now let's discuss the billet heating furnace in seamless steel pipe production equipment. Seamless steel pipe round steel or billet heating furnace is one of the crucial equipment in the production of seamless steel pipe, which must be heated to 1150 degrees round steel after perforation to become gross, for the subsequent shaping, probing, marking and so on to do the most basic work. The basic configuration of seamless pipe billet heating furnace is as follows: 1. Medium-frequency power supply system: 200KW-6000KW, with an hourly output of 0.2-16 tons. ...

1. Small diameter   seamless steel pipe   for structural use (GB/T8162-2008) is a seamless steel pipe used for general structure and mechanical structure.   2. Large diameter seamless steel pipe for fluid transport (GB/T8163-2008) is a general seamless steel pipe used for transporting water, oil, gas and other fluids.   3. Seamless steel pipe for low and medium pressure boiler (GB3087-1999) is used to manufacture various structures of low and medium pressure boiler superheat, sanitary stainless steel pipe. Steam pipe, boiling water pipe and locomotive boilers with superheated steam pipe and arch brick pipe with high quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipe.   4. High-pressure boiler seamless steel pipe (GB5310-1995) is used to manufacture high-quality carbon steel, alloy steel and stainless and heat-resistant steel seamless steel pipe for high pressure and above pressure water pipe boiler heating surface.   5. H...

Large diameter thick-walled seamless steel pipe   refers to a pipe that out diameter is above 159mm. With plastic coating options such as polyvinyl chloride (PVC), polyethylene (PE), and epoxy (EPOZY), they offer exceptional properties such as corrosion resistance, adhesion, and durability. The benefits of large diameter seamless pipes are unparalleled. They are resistant to chemical corrosion, non-toxic, rust-free, wear-resistant, and have excellent impact resistance. With a smooth surface that reduces transmission resistance, these pipes increase traffic and transport efficiency while decreasing delivery pressure losses. Solvent-free coating ensures no substance oozing, keeping your transmission medium clean and pure. They can withstand hot and cold cycles from -40°C to 80°C without aging or cracking, making them ideal for challenging environments. 🌬️ Widely used in various industries including tap water, natural gas, petroleum, chemical, and telecommunications, large diameter s...

With the development of building materials markets, we have various types of steel pipes in construction. In order to help you understand them, we will briefly introduce the differences between   seamless steel pipes   and   welded steel pipes   here: 1. Different processing techniques: Seamless pipes are made of carbon steel or alloy steel. The processing techniques for seamless pipes include cold drawing and hot rolling, while welded pipes are generally formed by welding. 2. Different uses: Seamless pipes are mainly used as pipelines or structural components for fluid transportation, primarily in the mechanical industry. Welded steel pipes are mainly used in the construction industry for low-pressure fluids such as water, gas, and compressed air. However, seamless steel pipes are used for pressure pipelines. 4. Different prices: Due to the complex production process of seamless steel pipes, their prices are higher compared to welded steel pipes. Welded steel pipes ...

Tempering is a heat treatment method, aim to improve the comprehensive properties of steel, that is, high temperature tempering after quenching. The steel has both high strength and excellent toughness, plasticity, cutting performance and so on. The  seamless steel pipe  needs to be heated during tempering. The heating temperature to be determined according to the material and specific composition of the steel. The selection of the quenching medium is based on the permeability of the steel and the size of the seamless steel pipe. The internal stress is very large and brittle, after the seamless steel pipe is quenched, so the seamless steel pipe must be tempered at a high temperature after quenching in order to eliminate the internal stress of the seamless steel pipe, to increase the toughness, and adjust the strength. High temperature tempering is tempering between 500-650°C. Most quenched and tempered parts work with big dynamic loads. They have to bear the effects of stretch...

Seamless steel pipe   is formed in one piece, it is pierced from round steel directly. Seamless pipe has a wide range of applications. Let's find out which field are seamless pipe used in. The application of seamless steel pipes is mainly in three fields: The construction field, which is used for underground pipeline transportation and groundwater extraction; the processing field, which is used for machining, bearing sleeves, etc.; the electrical field, including pipelines for gas transmission, fluid pipelines for hydropower generation, etc. The same feature of them is that the use of seamless pipes can avoid problems such as leakage and ensure the effect and safety during uses. Changsha Xiangjia Metal Materical Co., Ltd.  specializing in the production and sales of carbon steel pipes, alloy pipes, stainless steel pipes, etc., welcome to call us for consultation.

In this article, we are going to talk about the difference between galvanized steel pipe and  seamless steel pipe , or we say galvanized seamless steel pipe and seamless steel pipe. Galvanized refers to the surface treatment technology of plating a layer of zinc on the surface of metal, alloy, or other materials to play the role of aesthetics and rust prevention. Seamless steel pipe is made of a whole piece of metal, and there is no seam on the surface of the steel pipe. There are two kinds of steel pipes: seamless steel pipe and welded steel pipe. Galvanized steel pipe can be seamless steel pipe or welded steel pipe. Seamless steel pipe can be processed into the galvanized seamless steel pipe. Galvanized steel pipe may be seamless steel pipe, and may also be welded steel pipe. Galvanized pipe has higher corrosion resistance, and seamless steel pipe can withstand higher pressure. Galvanized steel pipe is less prone to rust due to the protection of zinc, and is lighter than seamless...

Square Steel Pipe is usually used in steel structures, structural curtain walls, machinery manufacturing, building materials, shipbuilding, airport, liquid transportation and other fields. Seamless Square Tube is a round tube without joint extrusion, that can be used for liquid delivery. Slotted square pipes can be welded with steel plates and are commonly used in steel structures. Plasticity refers to the ability of a metal material to slow down the plastic deformation (permanent deformation) of a metal shape under loading without damage. Hardness is the ability of a metal material to combine hard and soft. Over-steel is easy to embrittlement, and too soft is non-plastic. Now in  square steel pipe  detection, the commonly used method is the indentation hardness detection method. Measure the degree of indentation by squeezing the square tube against the rectangular tube. At present, the angle size, corner angle, and straightness of cold rolled square pipe used in steel struct...

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...

 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 i...

There are two types of galvanizing for   seamless steel pipes : hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing has wet method, dry method, lead-zinc method, redox method, etc. The difference between them is that what is used to activate the surface of the pipe body to improve the quality of galvanizing after the steel pipe is acid dipped and cleaned. The dry method and redox method are mainly used in the production. The surface of the zinc layer of electro-galvanizing is very smooth and dense, with uniform structure which make steel pipe has good mechanical properties and corrosion resistance. Electro galvanizing is complex on technically, it is used for single-sided coating, double-sided coating with different thicknesses on the inner and outer surfaces, and galvanizing of thin-walled pipes. Changsha Xiangjia Metal Materical Co., Ltd.  specializing in the production and sales of seamless pipes, alloy pipes, stainless steel pipes, etc., welcome to call us fo...

Fluid Seamless Steel Pipe is a kind of long steel with hollow section and no joint around it. Currently, there are more than 5,100 manufacturing factories of more than 1,850 companies in more than 110 countries. Among them, more than 260 plants of more than 170 companies in 44 countries manufacture kerosene pipes. The applications of  seamless steel pipe  are very wide. The seamless pipe of normal function is rolled by general carbon structural steel, low alloy structural steel, or alloy structural steel. It should be used as pipes or spare parts for fluid transport. The credentials are provided in three categories: a. According to chemical factors and machine function; b. According to machine function; C. Provided by hydraulic test.  Fluid pipes  supplied in a and b shall also be subjected to hydrostatic tests if they are to be subjected to liquid pressure. Seamless tubes with special functions include seamless pipe for boiler, seamless pipe for geology and seamless...

  Seamless steel pipe  has always been a commonplace problem in the machinery manufacturing and construction industry.  The application field and market scope of seamless steel pipe are expanding, and the demand for seamless steel pipe keeps increasing. Therefore, many manufacturers of seamless steel pipes are gradually developing. The rapid development brings the small and medium-sized enterprise a powerful turning point, but it is precise that the emergence of the non-standard manufacturer makes the quality of seamless pipe in the market vary greatly and can not be guaranteed, thus causing a lot of suppliers to fail to choose a good manufacturer. When choosing seamless steel pipe manufacturers, many buyers hope to find a cost-effective one but do not consider the comprehensive factors. First, we should not take price as the only standard to measure the manufacturing strength of manufacturers. We need to carry out a comprehensive factory inspection including the factory'...

The high quality of   seamless steel pipes   is mainly reflected in the specification accuracy and surface finish. Even after quenching and tempering, there will be no air oxide film on the surface of the pipe, nor will it be deformed by cold drawing. Sophisticated machining and manufacturing solutions are the advantages of seamless steel pipes.   Clean and maintain the surface of the seamless steel pipe to a certain extent to increase the service life of the seamless steel pipe. Many seamless steel pipes on the market will have great deviations in the model specification level. Even in different parts of seamless steel pipes, there are large differences in the inner diameter or wall thickness. Such a pipeline will undoubtedly cause a lot of problems throughout the application. But our seamless steel pipe is different, our seamless steel pipe has very strict regulations for each part of the pipeline.   Changsha Xiangjia Metal Materical Co., Ltd.   the Steel Pipe...

The difference between   seamless steel pipe   and   seamed steel pipe : 1. Different processing technology Seamless pipes are made of carbon steel or alloy steel. The processing technology of seamless pipes are cold drawing and hot rolling, while seamed pipes are welded. 2. Different usage Seamless pipes are mainly used as pipelines or structural parts for conveying fluids, mainly in the machinery industry. And seamed steel pipes are used in the construction industry, such as low-pressure fluids for water, gas, and compressed air. However, seamless steel pipes are used for pressure pipes. 3. Different price: Because the production process of seamless steel pipe is more complicated, the price is more expensive than that of seamed steel pipe, while the seamed steel pipe is mainly made of secondary welding of steel plate (steel strip), which is cheap and widely used.

Common standard for   seamless steel pipe : Seamless steel pipes are made of steel ingots or solid tube blanks through perforation to make capillaries, which are hot-rolled, cold-rolled or cold-drawn. Its used standards are: ① GB/T2102-2018 Acceptance, packaging, marking and quality certificate of steel pipes. ② GB/T17395-2008 Size, shape, weight and allowable deviation of seamless steel pipe. ③ GB/T5310-2018 Seamless steel tubes for high pressure boilers. ④ GB/T9948-2018 Seamless steel pipes for petroleum cracking. ⑤ GB/T6479-2018 Seamless steel pipes for high-pressure fertilizer equipment. ⑥GB/T18248-2018 Seamless steel pipes for gas cylinders. Changsha Xiangjia Metal Materical Co., Ltd.  is professional manufacture in seamless steel pipe with various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.