The components of the pressure pipe are generally standard parts, such as the ASTM A53 pipe or the ASTM A106 pipe, so the design of the pressure pipe components is mainly used for the selection of the standard parts. The pressure grade of the pipe is determined by the level of the standard parts. The company is located in:

The low carbon steel tube with ceramic is composed of ceramic and metal composite pipes. Ceramic tube combines high hardness, good chemical inertness and steel advantages. It has excellent wear resistance, corrosion resistance, heat resistance and thermal shock resistance. Power plant coal powder, ash, slag, tailings, backfilling, coal, concentrator, coke plant coke particles, the sintering plant material transport life is 15 times higher than the ordinary steel pipe resistance to mechanical impact performance, can also be used for liquid aluminum, corrosive medium transport.

Schedule 40 "and" schedule 80 "refer to the reference charts issued by the American National Standards Association (ANSI).

The tubing connector is 6.10 meters shorter than the tubing length in API 5CT. Executive Standard: API 5CT, API 5B Specifications: 1.9"-4-1/2" Button type: Eu, Nu,p Steel Grade: J55, K55, N80, L80, P110 Length: 2FT-20FT Uses: for wellhead length adjustment

The tubing connector is 6.10 meters shorter than the tubing length in API 5CT. Executive Standard: API 5CT, API 5B Specifications: 1.9"-4-1/2" Button type: Eu, Nu,p Steel Grade: J55, K55, N80, L80, P110 Length: 2FT-20FT Uses: for wellhead length adjustment

After getting approval from the National Company Law Tribunal (NCLT) in India on Tuesday, the India Steel Corp (Tata Steel) will open a takeover process for the bankrupt Steel Corp (Bhushan Steel). The industry expects that the India flat material industry will be further integrated. In the iron and steel industry in India, 6 companies account for 85% of the flat material production capacity. They are Tata Steel, JSW Steel, Steel Authority of India, Pu Shao steel, Bhushan Power and Steel Corp (Essar Steel). The last three companies are going through bankruptcy proceedings according to the new bankruptcy law of India.

The new production line of martensitic stainless steel seamless tube KL-HP12CR has excellent weldability, mechanical properties and corrosion resistance. Its weldability is improved by reducing its carbon and nitrogen content. Reducing carbon content also significantly increased the resistance to carbon dioxide corrosion. The corrosion rate was less than 0.127mm / A in a carbon dioxide environment at temperatures up to 160 degrees Celsius. And 2.0MPa. Sulfide stress cracking (SSC) is due to the addition of molybdenum. The new seamless pipe can be used in the hydrogen sulfide environment of pH 4 and 0.001 MPa. The strength of the pipe is X80 grade, and it has enough low temperature toughness when used in pipeline. After heat treatment for a few minutes, the carbon content is reduced. Adding titanium can effectively prevent intergranular stress corrosion cracking (IGSCC) in the heat affected zone. The pipeline is expected to be further used to deliver liquid containing corrosive gases, such as carbon dioxide, which is a cost-effective, high life, and low cost material.

In recent years, international research and Analysis on the research, development and application of X80 grade large caliber high grade steel pipe conveying seamless pipe steel for natural gas are studied and analyzed. The main results are as follows:

First, technical requirements 1, specification: 323.9mm * 11.125mm * 10000-12000mm seamless pipe 2, applicable standards and levels: API Spec 5L PLS1. 3, steel number: X52, smelting analysis and product analysis conform to API Spec 5L. 4, the slab quality should meet the requirements of YB / T4149-2006 standard for continuous casting slab. 5, the tensile properties of steel should be in accordance with API Spec 5L. 6, the deviation of the pipe size should be in accordance with the provisions of the table below. Dimensional process external diameter tolerance Wall thickness deviation

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. The material of the fake thick wall seamless pipe contains many impurities, and the density of steel is relatively small, and the size is seriously out of tolerance, so it can be weighed and checked without a vernier caliper. 4, and inferior thick-walled seamless tube cross section of the oval, because the factory in order to save material, the quantity of the finished product roll before 2 slants big, the strength of rebar is greatly decreased, but also do not conform to the standard of rebar shape size. 5. The surface of the seamless tube with fake thick wall is prone to scarring. There are two reasons: the pseudo thick seamless pipe with thick wall is not uniform in material and more impurities. Our guide equipment is simple and easy to stick steel. These impurities tend to scar after they bite people's roll.

Seamless steel tube brand - manufacturing process​ 1. Seamless steel tube brand - blank control 2. Seamless steel tube brand - quality planning control points 3. Seamless steel tube brand - inspection control

Several basic methods of seamless steel tube inspection: 1.Inspection of steel pipe geometry and appearance:​ 2. Chemical composition analysis: chemical analysis, instrumental analysis (infrared c-s instrument, direct reading spectrometer, zcP, etc.). 3. Physical and chemical properties of steel pipes: 4. Steel tube surface quality inspection: 100%

How to identify inferior seamless steel pipe? Here we identify through the following methods: First, poor quality seamless steel pipe surface is prone to scarring. Mainly due to two reasons: (1) There are many impurities in the inferior seamless steel tubes and the materials are not uniform. (2) Inadequate guide equipment for poor quality pipe manufacturers is particularly prone to sticking steel. Contaminated pipes tend to produce scars when they bite into the roll. Second, poor quality seamless steel pipe is prone to tube folding. The so-called folding is a variety of fold lines formed on the surface of the seamless steel pipe, and this defect often runs through the entire product. The reason for the folding is that the manufacturer is pursuing high efficiency in order to increase the output. In the production process, the amount of pressing is large, and ears are produced, and folding is easily generated in the next rolling process. The folded product is easily cracked after bending, resulting in a significant decrease in the strength of the pipe. Third, poor quality seamless steel pipe is prone to scratches, due to the poor production equipment of poor quality steel pipe manufacturers, the product is prone to burrs, scratch the surface of steel, deep scratches will reduce the strength of steel.

Definition： Carbon steel: mainly refers to the mechanical properties depends on the carbon content of the steel, generally does not add a large number of steel alloy elements, sometimes known as ordinary carbon steel or carbon steel. Carbon steel is also called carbon steel, and its carbon content is less than 2% WC carbon alloy. Carbon steel contains a small amount of silicon, manganese, sulfur, and phosphorus, which can be divided into carbon steel based on the use of carbon steel, carbon tool steel and easy cutting structural steel three carbon structural steel divided into structural steel and can be divided into low carbon steel (WC < 0.25%), medium carbon steel (WC 0.25%- 0.6%) and high carbon steel (WC> 0.6%). According to the content of phosphorus and sulfur, carbon steel can be divided into ordinary carbon steel (high phosphorus and sulfur content), high quality carbon steel (phosphorus and sulfur content is lower) high quality steel (phosphorus content, sulfur content is lower) carbon steel with higher carbon content, the higher the hardness, the higher the strength, but the lower the plasticity.

Use of carbon steel pipe: 1. mechanical industrial tube. Such as air structure tube (circular tube, elliptical tube, flat elliptical tube), axle tube, shaft tube, automobile and tractor tube, drag oil cooling pipe, farm square tube and rectangular tube, pressure variable tube and bearing pipe, etc. 2. petroleum geological drilling pipe. Such as: oil drilling rod, oil drilling rod (square drill pipe and six corner drill rod), oil tubing, casing and various oil pipes, geological drill pipe (core pipe, casing, movable drill rod, ring hoop and pin etc.)). 3. chemical industry tube. Such as: oil cracking pipes, chemical equipment, heat exchangers and pipes, stainless acid resistant pipes, chemical fertilizers, high pressure pipes and pipes conveying chemical media. 4. pipe pipe. Such as: water, gas pipeline, seamless pipe steam pipeline, oil pipeline, oil and gas dry pipe. Irrigation water faucets with pipes and sprinkler pipes. 5. heat equipment tube. For example, general boiler water pipe, superheated steam pipe, locomotive boiler superheater tube, smoke pipe, small tube, arch tube and high temperature and high pressure boiler tube. 6. other departments and management. Such as: vessel tube (high pressure cylinder and ordinary container), instrument tube, watch case tube, injection needle and medical device tube.

erw pipe weight

Spiral submerged arc welding (spiral) steel pipe is the full name of the hsaw pipe. The strip is sent to the welded pipe unit, multi roll rolling, and the strip is rolled up to form a circular pipe with opening clearance, adjusting the reduced extrusion roll to control the weld gap between 1 and 3mm, and make both ends of the weld flat. The spiral welded pipe is made of spiral material and welded by internal and external submerged arc welding, so as to produce different specifications of spiral welded pipe.

During the construction of natural gas and oil pipeline stations, the installation of valves, meters and flanges should be tapped in the main channel. It is difficult to identify the straight seam position of the base pipe by high-frequency resistance welding. The installation of some lugs is very close to the welding seam. Therefore, it is very necessary to deeply study and analyze the influence of the boss on the basic pipeline. In this paper, the residual stress distribution of high frequency longitudinal resistance welded pipe is analyzed, and the influence of welding position of different boss on residual stress is analyzed. The stress increases sharply and the longitudinal welding residual stress is affected when the boss installed on the ERW pipe is much larger than the parent pipe. ERW pipeline

The ERW welding machine technology is used to realize the high frequency welding of the electromechanical system. The high-frequency welding equipment is composed of a high-frequency welding machine and a forming machine. A high frequency welding machine is usually made up of two parts of high frequency generator and feed device. The effect is to produce high frequency current and control it. By extrusion roll frame, the function of the molding machine is high frequency current. The extrusion and melting part eliminates the oxide and impurities on the surface of the steel and makes the steel plate completely integrated into one. ERW pipeline

LSAW pipe fracture, hydraulic (pneumatic) parts in mechanical performance design, brittle fracture is also related to the temperature of parts.

The principle of seamless welding is gas shielded arc welding, known as gas shielded welding or gas welding, which uses arc as a heat source and gas as a protective medium. During the welding process, the protective gas is formed around the arc to form a protective gas layer, to isolate the arc and water pit, to prevent the influence of the harmful gas and to ensure the stable combustion of the arc. Gas shielded welding is classified according to electrode state, operation mode, protection gas type, electrical performance, polarity and application scope. Seamless welding Seamless welding is carried out according to specific conditions. Gas shielded welding can be used with different gases, and the commonly used protective gases are carbon dioxide, argon, helium, hydrogen and gas. The advantages of gas arc arc welding are: good wire arc, easy to centering, easy to weld in all position, automatic welding, small welding arc, small welding pool, fast welding speed, narrow heat affected zone, small deformation of welding position, strong crack resistance and good welding quality. The disadvantage is that it is not suitable for welding with windy grounds, and the arc radiation is stronger.