STAINLESS STEEL LARGE DIAMETER PIPE

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1. Guaranteed material from established steel factories
2. Accordance with International standard
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PRODUCT NAME: STAINLESS STEEL LARGE DIAMETER PIPE

Name	STAINLESS STEEL LARGE DIAMETER PIPE
Standard	ASTM, GB, JIS, DIN, EN, AISI
Material Grade	TP304 TP304L TP316 TP316L TP347 TP347H TP321 TP321H TP310 TP310S
	TP410 TP410S TP403
	S31803/S32205 S32750 S32760
Outer Diameter	Welded Pipe: single slit(Φ8mm-Φ630mm); girth(Φ630mm-Φ3000mm),
Thickness	Welded Pipe: single slit(0.5mm-25mm); girth(3mm-30mm)
Length	Commonly 5.8 Meters or 6.0 Meters, or as customers' request
Tolerance	According to the Standard, +/-10% Commonly.
Surface	180#, 320#, 400# Satin / Hairline, Bright Anneal, Pickle,400#, 500#, 600# or 800# Mirror finish
Application	Petrochemical industry, chemical fertilizer industry, oil refining industry, oil and gas industry, light industry and food industry, pulp and paper industry, energy and environmental industries.
Test	Flaring test, Flattening test, Bending Test, Hydraulic Test, Eddy Current test

Q: Can stainless steel pipes be used for underground gas pipelines?: Yes, stainless steel pipes can be used for underground gas pipelines. Stainless steel is highly resistant to corrosion, making it an ideal material for underground applications where the pipes come into contact with moisture, soil, and other corrosive elements. Additionally, stainless steel has excellent mechanical properties, such as high tensile strength and durability, which make it suitable for withstanding the underground conditions and the pressure requirements of gas pipelines. Moreover, stainless steel pipes are known for their longevity and low maintenance requirements, making them a cost-effective choice for underground gas pipelines. Nonetheless, it is essential to follow industry standards and regulations, as well as proper installation and maintenance practices, to ensure the safe and efficient operation of the gas pipelines.

Q: What is the difference between 304L and 316L stainless steel pipes?: 304L and 316L, both stainless steel pipe types, have distinct differences in their chemical composition and specific properties. With a lower carbon content, 304L stainless steel is a variation of 304 stainless steel. This characteristic grants it greater resistance to sensitization, i.e., the formation of chromium carbide at grain boundaries, which can lead to intergranular corrosion. Due to this lower carbon content, 304L stainless steel pipes are commonly utilized in environments where sensitization is a concern, such as welding applications or corrosive settings. Conversely, 316L stainless steel is an austenitic stainless steel that boasts the inclusion of molybdenum. This element enhances its corrosion resistance when compared to 304L stainless steel. The addition of molybdenum strengthens its ability to combat pitting and crevice corrosion, making it suitable for use in more aggressive environments like marine or chemical processing settings. Regarding mechanical properties, 316L stainless steel pipes generally exhibit higher tensile strength and yield strength than 304L stainless steel pipes. Consequently, 316L stainless steel pipes are more suited for applications necessitating greater strength and durability. In summary, the primary disparity between 304L and 316L stainless steel pipes lies in their chemical composition and corrosion resistance properties. 304L stainless steel pipes offer enhanced resistance to sensitization, while 316L stainless steel pipes provide heightened corrosion resistance, especially in more aggressive environments. The selection between these two types depends on the specific requirements of the application and the environment in which the pipes will be employed.

Q: Are stainless steel pipes suitable for oil and gas applications?: Indeed, oil and gas applications find stainless steel pipes to be appropriate. Stainless steel boasts exceptional corrosion resistance, rendering it the perfect choice for the conveyance and storage of oil and gas, substances that frequently harbor corrosive components. Additionally, stainless steel pipes exhibit remarkable strength and durability, guaranteeing their ability to endure high-pressure circumstances and unforgiving surroundings. Moreover, stainless steel proves effortless to cleanse and uphold, thus diminishing the likelihood of contamination within oil and gas operations. All in all, stainless steel pipes emerge as a dependable and economically viable option for oil and gas applications.

Q: Are stainless steel pipes suitable for hygienic applications?: Yes, stainless steel pipes are suitable for hygienic applications. Stainless steel is widely used in industries such as food processing, pharmaceuticals, and dairy, where maintaining cleanliness and preventing contamination is crucial. Stainless steel pipes have several properties that make them ideal for hygienic applications. Firstly, stainless steel is highly resistant to corrosion, which is important for maintaining hygiene and preventing the growth of bacteria or other pathogens. It does not rust or corrode easily, even when exposed to various chemicals and cleaning agents used in hygienic environments. This resistance to corrosion ensures the integrity of the pipes and prevents any contamination from occurring. Secondly, stainless steel has a smooth, non-porous surface that is easy to clean and sanitize. The smoothness of the surface prevents the accumulation of dirt, bacteria, or other particles, making it easier to maintain a hygienic environment. Stainless steel pipes can be easily cleaned using various cleaning methods, including steam, high-pressure water, or chemical cleaning agents. Furthermore, stainless steel is a durable and long-lasting material. It can withstand high temperatures and pressures, making it suitable for a wide range of hygienic applications. Stainless steel pipes can be used for transporting fluids, gases, or other materials without compromising their hygienic properties. In addition, stainless steel is a non-reactive material, meaning it does not react with the substances it comes into contact with. This property is important for preventing any contamination or alteration of the substances being transported through the pipes. Overall, stainless steel pipes are highly suitable for hygienic applications due to their corrosion resistance, smooth surface, durability, and non-reactive properties. They provide a reliable and hygienic solution for industries where cleanliness and prevention of contamination are of utmost importance.

Q: Are stainless steel pipes suitable for power plants?: Yes, stainless steel pipes are highly suitable for power plants. They offer exceptional resistance to corrosion, high temperatures, and pressure, making them ideal for transporting various fluids and gases within power plants. Additionally, stainless steel pipes have excellent strength and durability, ensuring long-term reliability in the demanding operating conditions of power plants.

Q: Can stainless steel pipes be used for oil pipelines?: Yes, stainless steel pipes can be used for oil pipelines. Stainless steel is known for its high corrosion resistance, making it suitable for transporting various fluids, including oil. It is also durable and can withstand high pressure and temperature conditions, making it an ideal choice for oil pipelines. Additionally, stainless steel pipes have a smooth interior surface, which helps in reducing friction and improving the flow of oil. However, the selection of stainless steel grade and proper coating should be considered to ensure the pipes' compatibility with the specific type of oil and the environmental conditions in which they will be used.

Q: Are stainless steel pipes resistant to crevice corrosion?: Yes, stainless steel pipes are generally resistant to crevice corrosion. This is because stainless steel contains a significant amount of chromium which forms a passive oxide layer on the surface of the material. This oxide layer acts as a protective barrier and prevents the penetration of corrosive substances, including crevices. However, it is important to note that the resistance to crevice corrosion may vary depending on the specific grade and composition of stainless steel used, as well as the environment in which the pipes are exposed to. Therefore, it is always advisable to select the appropriate grade of stainless steel that is suitable for the specific application and environment to ensure optimal resistance to crevice corrosion.

Q: What is the difference between nominal diameter and actual diameter in stainless steel pipes?: The nominal diameter refers to the designated size or label of a stainless steel pipe, while the actual diameter represents the physical measurement of the pipe's inner or outer diameter. The nominal diameter is often used for classification and standardization purposes, whereas the actual diameter provides the precise measurement for fitting and compatibility purposes.

Q: Can stainless steel pipes be insulated with ceramic?: Yes, stainless steel pipes can be insulated with ceramic. Ceramic insulation is often used due to its excellent thermal resistance and insulation properties. It helps in reducing heat loss and conserving energy in various applications, including stainless steel pipes.

Q: Are stainless steel pipes resistant to abrasion?: Yes, stainless steel pipes are highly resistant to abrasion. This is due to the unique properties of stainless steel, such as its high hardness and strength. Stainless steel pipes are made from an alloy that contains a minimum of 10.5% chromium, which forms a protective layer on the surface that prevents rusting and corrosion. This protective layer also helps to resist abrasion, making stainless steel pipes an excellent choice for applications where there is a high risk of wear and tear. Additionally, stainless steel pipes can withstand high temperatures and are highly durable, making them ideal for industries such as oil and gas, chemical, and construction.

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