Three Benefits of Welded Steel Pipe

The process on manufacturing welded steel pipe is complicated. Starting from the steel billet with solid and round feature, then turn to increase the temperature and make it flexible until we can hollow this billet into a tube. We have to admit that the process will cost you lots of money and time, but at the same time the quality is satisfied. As you may have already known that, there are lots of benefits of welded steel pipe.

Increased Pressure Ratings
The most impressive trait of it is their strength to endure pressure, while the disadvantage of seamless pipe is their seamless. Because the welded one has been welded and has that seam, which make it strong enough to bear the entire circumstance. What's more, it would be more likely to take pressure figure into account for the quality even sometimes without required. Although the welded pipe would be little expensive than the seamless ones once a while, this folding strength allows you to cut down your expenses since they are lighter and smaller but can take over the same pressure.

Uniformity of Shape
As you can see that the carbon steel pipe is manufacturing by circling around the mold after adding heats and pressure, its shape become round and have the quality of uniformity. As the steel pipe is the combination of the alloy, we can conclude that it is helpful because you can add or equip some fittings to the pipes.

Strength Under Loads
Lots of pipes types that you can choose, for the price regard, on the one hand, welded steel pipes can be more costly than other types of pipes, on the other hand, it is more durable and trustful. This kind of pipe has a strong capacity of understanding load. It is reasonable that an empty pipe can support its own weight, but when it comes to deliver some materials not all the structural steel pipe can handle it. Some accidents like oil leak would happen in other pipes, but because of the seamless properties, it reduces the probability of that failures. The pressure ratings, uniformity of shape and strength under loads make it outstanding in front of an array of pipes. As we know that those pipes can be used in architecture, materials equipment and machinery parts. Another merit of welded steel pipes is that they do a good job in severe environment, which allows it to work in extremely weather or temperature, such as in the equator and the South Pole. If you are concerned about making decision on buying steel pipes for your project, you would better ask for a leading brand of pipe supplier, as they can assure the quality of the products and reduce the shipment time when you are in all over the world. We suggest all the customers to take every important details into consideration before purchasing the mild steel pipe. We are pretty sure that you will benefit in the long running for the construction.

What is Carbon Steel Pipe?

Carbon steel pipe include the structural steel pipe ,Liquid transportation pipe,Low medium-voltage boiler steel pipe ,high voltage boiler steel pipe etc. 1)  The structural steel pipe is used for General structure and mechanical structure area. 2)  Liquid transportation pipe is the seamless pipe used for transportaion of water ,oil,gas etc. 3)  Low and medium pressure boiler steel pipe is one kind of high-quality carbon structural steel and cold drawn seamless steel tubes which is used in the manufature of various structural low and medium pressure boiler, superheated steam pipes, boiling water steam locomotive boiler tubes and pipes 4)  High-pressure boiler seamless steel tube is one kind of high-quality carbon steel pipe, alloy steel and heat-resistant stainless steel seamless steel tubes which is used for the high pressure and above high pressure water-tube boiler.

The application of L245 API Steel Pipe

Now, with the chemical industry in China, L245 line pipe has been widely applied, the domestic L245 line pipe per year growth rate of 10% in oil, urea and other industries also have great development prospects. L245 line pipe in the performance of outstanding performance is the high yield strength and resistance to stress corrosion, good weldability, weld cold cracking and hot cracking susceptibility are small. In Japan, austenitic and ferritic carbon steel pipe in the petrochemical industry piping systems accounted for 54% market share. In China, the L245 line pipe is mainly used in decorative areas, in the petrochemical industry is still using the basic corrosion resistance welded blank.

Currently, the domestic stainless steel in variety, size, quantity, quality, etc., in terms of L245 mild steel pipe to meet the market demand, or the advanced industrial countries with more on the technical level, has a certain gap. L245 line pipe embodied: L245 line pipe in the number of products, the general purpose of the common stainless steel production has a balance with the overall market demand. 

More information about L245 line pipe,pls visit: Hunan Great Steel Pipe Co.,ltd

Purpose of Annealing Steel Pipe

Steel tube annealing is heated to a certain temperature and thermal insulation for some time, and then it slowly cooling called annealing. The annealing of the carbon steel pipe is the tube is heated to the phase transition temperature of the phase transition or in part, after heat treatment method of slow cooling after incubation. Annealing into fully annealed, fully annealed and stress relief annealing. The mechanical properties of the annealed material tensile test to detect, can also be used hardness test to detect. Many steel supply, steel annealing state Hardness testing using Rockwell hardness tester, test HRB hardness, thin plate, strip, and structural steel pipe, surface Rockwell hardness tester can be used to detect HRT hardness . The purpose of annealing is to improve the organization in order to eliminate the organizational defects, the composition of homogenization and grain refinement to improve the mechanical properties of steel, to reduce the residual stress; can reduce hardness and improve ductility and toughness, and to improve the cutting performance. So annealing both in order to eliminate and improve organizational defects and internal stress left over from the previous process, to prepare for the follow-up process, so annealing is a semi-finished heat treatment, also known as pre-heat treatment.

Coating of Piling Pipe

Buried gas pipeline external corrosion coating layer PE composite structure, epoxy powder (FBE), coal tar enamel, coal tar epoxy and PE tape five. Layer PE composite structure, epoxy powder anticorrosion coating performance and, therefore, Europe and the United States of buried pipeline anti-corrosion coating. In China, the durable life, maintenance costs and overall economic factors considered, the general composite structure of the preferred three-layer PE anti-corrosion coating steel pipe.

Different corrosion corrosion quality and cost, different gas should be based on the protection of steel pipes at different pressures, different purposes and in which the different environments and transport, comprehensive consideration of the anti-corrosion and corrosion costs. In considering the economic rationality should pay attention to two points: (1) gas pipeline network construction the anticorrosive investment, (2) gas pipeline network running maintenance costs. The city gas pipeline networks in urban areas and put into operation, maintenance and overhaul difficulties and higher costs should be appropriate to increase investment in order to reduce routine maintenance workload of the pipeline put into operation.
Precision piling carbon steel pipe products are widely used in natural gas, petroleum, chemicals, electricity, heat, water supply and drainage, steam heating, hydropower pressure steel pipe, thermal power, water and other long-distance pipelines and piling, bridges,structural steel pipe and other engineering fields.
 

Steel Pipe for Piling

Piling pipe is also known as pipe, welded steel pipe made of steel sheet or strip after curl after forming divided into Longitudinal and spiral welded pipe; the welding process is divided into stove pipe, welded pipe and automatic arc welded pipe, pipe materials and for different purposes is divided into: galvanized steel pipe, stainless steel welded steel pipe; but also because of the shape of the end is divided into the tube, square tube, oval tube, P-shaped tube. Special Pipes. Piling carbon steel pipe used in billet steel sheet or strip, buried pipeline electrochemical corrosion process and its anti-corrosion methods start from the inhibition of one process. Plus anti-corrosion coating in the pipe wall, can increase the loop resistance, reduce corrosion current; plus DC power, so that the pipe on the soil caused by the negative potential, the formation of cathodic protection, and eliminate the anode and cathode potential difference to stop the anode and cathode process, fundamentally carried out. Anti-corrosion coating and the rule of law, cathodic protection of the rule of law in this. However, once the anti-corrosion coating is damaged, the exposed iron parts to accelerate localized corrosion. Therefore, anti-corrosion coating and cathodic protection of the combination is rid of this economical and effective. The United States and other countries have clearly defined, anti-corrosion coating and cathodic protection must be used. But for the city gas system, the underground pipe network-intensive, cathodic protection, plus the power of the other pipeline interference caused by their own benefit, the situation of his victims. Negative than the steel tube potential of metal materials and coating steel pipe connected to the sacrificial anode protection law does not appear such a situation, therefore, the gas trunk pipelines for City Gas combining anti-corrosion coating and sacrificial anode corrosion. Other low pressure trunk pipeline, the general anti-corrosion coating. More information, pls visit:Hunan Great Steel Pipe Co.,ltd.

Precision Bright Pipe

Features of Precision bright pipe  Carbon steel pipe inside and outside wall of high-precision, high-quality finish, heat treatment steel tubes after the oxide layer, the inner wall of cleanliness, steel to withstand high pressure, cold bending deformation, flaring, flattening free of cracks, can make a variety of complex deformation and mechanical processing. Steel Color: White with light, with high metallic luster. Precision bright tubes purposes: Automotive, machinery parts, etc. with precision steel tubes, finish high requirements of mechanical. Precision steel pipe user requirements are relatively high users not only on precision, smoothness, precision light control and high precision, tolerances can be maintained at 2 - 8 wire, so a lot of machining in order to save labor, material, the loss of mild steel pipe or round bar is slowly shift for precise light control.