Tag: pipe

Martensitic stainless steel pipe

A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis.

Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis.

In recent years, in order to cope with a high increase in the price of crude oil and in order to guard against the depletion of oil resources that may occur in near future, the following wells have been extensively developed worldwide: deep oil wells that have not attracted much attention and sour gas wells which are highly corrosive and of which the development has therefore been abandoned once. Steel pipes used for such oil wells and gas wells must have high corrosion resistance.

In environments containing a large amount of, for example, carbon dioxide, inhibitors have been used to prevent corrosion.

However, the use of such inhibitors causes an increase in cost and the inhibitors cannot provide sufficient advantages under high temperature conditions in some cases. Therefore, steel pipes with high corrosion resistance have been recently used without using the inhibitors.

The API standards specify that 12%-Cr martensitic stainless steel with a reduced C content be suitable for line pipes. In recent years, martensitic stainless steel pipes have been used for pipelines for natural gas containing CO2. There is a problem in that such martensitic stainless steel pipes must be preheated or subjected to post-welding heat treatment when they are girth-welded. Furthermore, there is a problem in that welded portions thereof are inferior in toughness.

In order to cope with such problems, for example, Japanese Unexamined Patent Application Publication No. 9-316611 discloses martensitic stainless steel having a C content of 0.02% or less, an N content of 0.07% or less, an appropriate Cr content, an appropriate Ni content, and an appropriate Mo content. The Cr content, the Ni content, and the Mo content are adjusted in relation to the C content or the C content and the N content and the Ni content and the Mo content are adjusted in relation to the C content and the N content. A martensitic stainless steel pipe manufactured using the steel disclosed in this document is superior in CO2 corrosion resistance, resistance to stress corrosion cracking, weldability, and high-temperature strength and the toughness of a welded section of the pipe is high.

The following new problem has recently arisen: a problem in that cracking occurs in heat-affected zones (hereinafter referred to as HAZs) of martensitic stainless steel pipes which is subject to girth-welding in environments containing CO2.

The martensitic stainless steel pipe is useful in manufacturing a welded structure by welding. Examples of the welded structure include oil or natural gas production facilities such as pipelines manufactured by girth-welding line pipes, chemical plant pipes such as risers and manifolds, and bridges. The welded structure specified herein may be manufactured by welding the martensitic stainless steel pipes of the present invention, welding the martensitic stainless steel pipe of the present invention to another type of steel pipe, or welding the martensitic stainless steel pipe to a member made of another material.

Baofeng Steel Group which established in 2002 had developed rapidly from theinitial Baofeng Steel-melting factory into the current Baofeng Steel Group within just a few years.At present, we are one of the largest stainless steel pipe,Stainless steel seamless pipe manufacturer in China.

{check out these stainless steel kitchen sinks products

Find More Stainless Steel Kitchen Sinks Articles

Bookmark and Share
Tags : , , ,

Leaky Faucet and Water Pipe Line Repair Services

If you are a homeowner then you know how eminent your plumbing is to the overall functioning and efficiency of your house. Plumbing system is the most vital aspect of your home and supposed to be the most complex one. All water lines, gas lines pass throughout your house, making if more efficient and fully functional. It certainly assist you have convenient access to water in kitchen and bath facility for cooking, cleaning, jetting, outside sprinkling and showering.

Some time, you are trapped and run into severe problems with this complex network of multiple pipes. This may occur because of the consistent stress and high-pressure in the water lines. You can even encounter the problem of pipe bursting or leak or damage that can cause serious flooding through the house. If you have any pinhole or break or leak in your water lines then you should immediately call a qualified and professional plumber to help you with water line repair.

Qualified plumbers and technicians can assess the situation easily and explain the exact cause of the problem.

They also let you know what needs to be done in order to restore your home back into normal functioning and working condition. Technicians can identify the rusty or damaged pipes or the pipes that are experiencing low pressure. Sometimes, you may have to delve a piece of drywall in order to get to a certain pipe, and experts plumbers can do this easily and fix it at the same time.

Faucets are connected to the pipes and hence subjected to failure at any point of instance.

Faucets allow you to easily access your water line to help with daily working like cooking, showering and cleaning. Faucets have internal parts that are prone to failure or sudden break down due different delicate yet integral parts. This is the reason it eventually wears out and therefore requires frequent repair plus maintenance.

Faucets can also lead to further problems of leaking and foundation damage. These leaks are serious for the property and usually start from a single point but eventually gets gigantic.  If not taken care at the same time with prior attention it can lead to floor flooding. To save yourself from expensive plumbing and especially water pipe & faucet repairs and maintenance, it is vital to invest in a perfectly reliable and educated plumber to help with your leaky faucet and water pipe line needs.

 

Ben Franklin Dallas Plumbing Dallas offers 24-hour emergency services, no matter what the job. Their reliable DFW plumbing company stands behind the accuracy and quality of all plumbing repairs. They offer a 2-year warranty on their repair services. Most importantly, they do the job right the first time, every time, because only the best Dallas TX plumbers are employed by Benjamin Franklin Plumbing. 

Bookmark and Share
Tags : , , , , , ,

Stainless Steel Pipe And Stainless Steel Tube Ensure Performance

Stainless Steel Pipe and Stainless Steel Tube are mark of high efficiency and productivity. Structured and textured with hard core steel, these pipes and tubes are of great value. Enormously used in industries and other manufacturing units, they ensure best output.
Stainless steel pipe and Stainless steel tube are used for multiple reasons. There inherent characteristics are of great help, of high resistance to corrosion and oxidation stainless steel pipe and stainless steel tube makes work easier.

Ensured to maintain purity of materials they are highly effective in work areas. Available in various size and diameter, these tubes and pipes are of massive benefit. Mark with flexibility and durability, stainless steel pipe and stainless steel tube have created a difference. With advancement and up gradation in quality and structure stainless steel tube ensures high rate of performance. Configured with result oriented approach, they generate high end revenue. Demanded in chemical, petrochemical, fertilizer, pulp and paper, marine, food, beverage, energy and other process industries, these pipes are mark of reliability and trust. .

Tagged with high strength and featured with ductility when compared with other materials stainless steel pipe and stainless steel tube are a mark of excellence. Integrated with corrosion protection and erosion resistance, these pipes are highly demandable. .

Among these stainless steel tube and pipes, X-grade pipe is known for its extraordinary features. Backed by authenticity and high potency, X-grade pipe are used for construction of long distance pipelines for combustible liquids and gases. Applicable for energy transmission, replacement and repair of pipelines and compressor stations these pipe are marked with scientific advancement and quality enhancement. With the advent of 4130 tubing and Nickel pipe, construction units have doubled their productivity. .

Ideal for high strength applications 4130 tubing are used immensely in areas of aerospace industry, performance racing, architectural and other. Available in various customized length and thickness, Nickel pipe is the first choice of the buyers. With optimum strength and designed as per customers need, these pipes are vastly used for fabrication purpose. Huge demand of Nickel pipe can be seen in automobile and oil sectors. .

With advent of online technologies you can easily opt for the stainless steel tube and stainless steel pipe by logging yourself to various sites that ensures you with latest information regarding stainless steel pipe and tube. These sites are always there to ensure you with best suggestions and hold transparency to deal in a best possible way.

I am a writer professionally. My maximum articles are subjected for technical purpose. I like to write on the technical applications practiced in manufacturing process in various industries.

If you wish to learn more about 4130 tubing and nickel pipe then log on to www.archcitysteel.com

Bookmark and Share
Tags : , , , , ,

Martensitic stainless steel pipe

A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis.

Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis.

In recent years, in order to cope with a high increase in the price of crude oil and in order to guard against the depletion of oil resources that may occur in near future, the following wells have been extensively developed worldwide: deep oil wells that have not attracted much attention and sour gas wells which are highly corrosive and of which the development has therefore been abandoned once.

Steel pipes used for such oil wells and gas wells must have high corrosion resistance.

In environments containing a large amount of, for example, carbon dioxide, inhibitors have been used to prevent corrosion. However, the use of such inhibitors causes an increase in cost and the inhibitors cannot provide sufficient advantages under high temperature conditions in some cases. Therefore, steel pipes with high corrosion resistance have been recently used without using the inhibitors.

The API standards specify that 12%-Cr martensitic stainless steel with a reduced C content be suitable for line pipes.

In recent years, martensitic stainless steel pipes have been used for pipelines for natural gas containing CO2. There is a problem in that such martensitic stainless steel pipes must be preheated or subjected to post-welding heat treatment when they are girth-welded. Furthermore, there is a problem in that welded portions thereof are inferior in toughness.

In order to cope with such problems, for example, Japanese Unexamined Patent Application Publication No. 9-316611 discloses martensitic stainless steel having a C content of 0.02% or less, an N content of 0.07% or less, an appropriate Cr content, an appropriate Ni content, and an appropriate Mo content. The Cr content, the Ni content, and the Mo content are adjusted in relation to the C content or the C content and the N content and the Ni content and the Mo content are adjusted in relation to the C content and the N content. A martensitic stainless steel pipe manufactured using the steel disclosed in this document is superior in CO2 corrosion resistance, resistance to stress corrosion cracking, weldability, and high-temperature strength and the toughness of a welded section of the pipe is high.

The following new problem has recently arisen: a problem in that cracking occurs in heat-affected zones (hereinafter referred to as HAZs) of martensitic stainless steel pipes which is subject to girth-welding in environments containing CO2.

The martensitic stainless steel pipe is useful in manufacturing a welded structure by welding. Examples of the welded structure include oil or natural gas production facilities such as pipelines manufactured by girth-welding line pipes, chemical plant pipes such as risers and manifolds, and bridges. The welded structure specified herein may be manufactured by welding the martensitic stainless steel pipes of the present invention, welding the martensitic stainless steel pipe of the present invention to another type of steel pipe, or welding the martensitic stainless steel pipe to a member made of another material.

Baofeng Steel Group which established in 2002 had developed rapidly from theinitial Baofeng Steel-melting factory into the current Baofeng Steel Group within just a few years.At present, we are one of the largest stainless steel pipe,Stainless steel seamless pipe manufacturer in China.

Bookmark and Share
Tags : , , ,