hot dipped galvanized scaffolding pipe

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Loading Port:: China Main Port

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O.D	O.D tolerance	W.T	Thickness Tolerance
1/2-12''	±0.3mm	1.5-12 MM	±8%
Length	3m,4m,5.8m,6m or according customers' requirements
Certificate	ISO9001-2008,EN10210,API,Raw material cert,Mill cert,Reap on site inspection report,SGS,BV
Standard	ASTM A53/ASTM A36 BS1387/BS1139/EN39/EN10219/EN10217/EN10297/EN10296/EN10025 etc
Material	Q195/215/235/345, SS330/400/500, S235JR/S235JQ/S235J2, etc
Inspection	With Hydraulic Testing, Eddy Current , Infrared Test, etc
Technique:	Welded Hot rolled,heat extrusion
Packing	in bundle or in bulk, PVC in blue or in strip
Usage	For construction, Pluid and Greenhouse
Main market:	Middle east,North and South America, East and West Europe, South and southeast Asia,Australia,Africa,
Place of Origin	China
HS code:	73063090
Productivity	2000Ton/Month
Processing	galvanzied,inner and outer stab clean,bevelled oiled,painted black threading,with coupling and plastic caps protected packing in plastic cloths,3PE,FBE,corrosion resistant coating

Q: How do steel pipes compare to other materials like PVC or copper pipes?: Steel pipes have numerous advantages over materials such as PVC or copper pipes. Firstly, their strength and durability make them ideal for high-pressure applications. They can withstand extreme temperatures and resist corrosion, making them suitable for both indoor and outdoor use. In contrast, PVC pipes are weaker and more prone to cracking and breaking under pressure or in extreme temperatures. Although copper pipes are durable, they can be susceptible to corrosion and may require additional protective coatings. Secondly, steel pipes have a longer lifespan compared to PVC or copper pipes. They are renowned for their longevity and can last for several decades without needing replacement. PVC pipes, although relatively inexpensive, have a shorter lifespan and may require more frequent replacement. Similarly, copper pipes can corrode over time and may need maintenance or replacement. Another advantage of steel pipes is their ability to handle a wide range of fluids and substances. They are commonly used in industrial applications where chemicals or corrosive materials may be present. PVC pipes, on the other hand, may not be suitable for handling certain chemicals or substances as they can react and cause damage to the pipe. Copper pipes, while generally safe for carrying water, may not be ideal for conveying certain chemicals or fluids. Additionally, steel pipes possess excellent fire resistance properties. In the event of a fire, they can withstand high temperatures and maintain their structural integrity, ensuring the safety and protection of the surrounding area. PVC pipes, however, can melt or deform under high heat, potentially causing structural damage. Although copper pipes are less prone to melting, they can still be affected by extreme heat and lose their strength. Nevertheless, steel pipes do have a few drawbacks. They tend to be heavier and more challenging to install compared to PVC or copper pipes. Additionally, they can be more expensive upfront, especially when compared to PVC pipes. However, considering their durability and longevity, steel pipes may offer better value in the long run. In conclusion, steel pipes provide numerous advantages over materials like PVC or copper pipes. They are strong, durable, resistant to corrosion, and have a longer lifespan. They can handle high-pressure applications and a wide range of fluids, making them suitable for various industrial and commercial uses. Although they may be more expensive and difficult to install, the benefits of steel pipes make them a reliable and cost-effective choice for many applications.

Q: How do you determine the required wall thickness for steel pipes?: The required wall thickness for steel pipes is determined through various factors and calculations. One of the primary considerations is the pressure that the pipe will be subjected to. The higher the pressure, the thicker the wall needs to be to ensure the pipe can withstand the internal forces. Another important factor is the material strength of the steel used for the pipe. Different grades of steel have varying tensile strengths, which affect the required wall thickness. The tensile strength is the maximum amount of stress a material can withstand before it fails, so it is crucial to select a steel grade that can handle the expected pressure. Additionally, the pipe's diameter plays a role in determining the required wall thickness. Larger diameter pipes generally require thicker walls to maintain structural integrity and prevent deformation under pressure. To calculate the required wall thickness, engineers use industry standards and formulas. The most commonly used standard is the American Society of Mechanical Engineers (ASME) B31 code, which provides guidelines for designing pressure piping systems. The ASME code incorporates factors such as safety margins, material properties, and pressure ratings to determine the appropriate wall thickness. Furthermore, other considerations such as temperature, corrosion, and external loads may also influence the required wall thickness. For example, high-temperature applications may require thicker walls to prevent the pipe from buckling or becoming too soft. In summary, determining the required wall thickness for steel pipes involves considering factors such as pressure, material strength, diameter, temperature, and other external forces. Engineers rely on industry standards and calculations to ensure the pipe can withstand the intended operating conditions safely.

Q: How are steel pipes used in the construction of shipbuilding?: Steel pipes are used in shipbuilding for a variety of purposes, including the construction of the ship's framework, hull, and various onboard systems. These pipes provide structural strength and durability, allowing the ship to withstand the harsh conditions at sea. They are also used for piping systems, such as fuel, water, and ventilation, ensuring the efficient operation of the vessel.

Q: How are steel pipes used in the construction of offshore oil rigs?: Steel pipes are used in the construction of offshore oil rigs primarily for the transportation of oil and gas. These pipes are used to connect the wells drilled in the seabed to the surface facilities on the rig. They are also utilized for the circulation of drilling fluids, which help maintain stability and cool down the drilling equipment. Additionally, steel pipes are used to construct the rig's structural components like risers, conductors, and caissons, providing strength and support in the harsh offshore environment.

Q: What is the diameter of the steel tube DN20?: Stress: the nominal diameter is not the outer diameter of the pipe, nor the inner diameter of the tube. It is not the average value of the inside and outside diameter (the nominal diameter of the equipment refers to the outer diameter).

Q: How do steel pipes compare to other materials like PVC or copper?: There are several advantages to using steel pipes compared to materials like PVC or copper. Firstly, steel pipes are known for their strength and durability. They can withstand high pressure and extreme temperatures without cracking or bending, making them ideal for heavy-duty applications such as industrial piping systems or underground installations. Secondly, steel pipes have excellent corrosion resistance. Unlike copper pipes that can corrode over time, steel pipes are typically coated with anti-corrosive materials like zinc or epoxy. This protective layer prevents rust and ensures a longer lifespan for the pipes. Furthermore, steel pipes offer superior fire resistance compared to PVC or copper. They are non-combustible and can withstand high temperatures for extended periods without deforming or releasing toxic gases. This makes steel pipes a safer option for applications where fire hazards are a concern. In terms of cost, while steel pipes may initially be more expensive than PVC, they offer better long-term value due to their durability and longevity. On the other hand, copper pipes can be quite expensive and are susceptible to theft due to their scrap value. Lastly, steel pipes are highly versatile and can be used in various applications such as water supply, sewage systems, gas pipelines, and oil refineries. They can handle high volumes of fluid with ease and are resistant to external factors like UV rays or physical impacts. Overall, steel pipes are a reliable and efficient choice for many industries and applications, offering strength, durability, corrosion resistance, fire resistance, and versatility that sets them apart from materials like PVC or copper.

Q: How are steel pipes protected against UV radiation?: Steel pipes are typically protected against UV radiation by applying a coating or paint that contains UV stabilizers. These stabilizers help to prevent the degradation and discoloration of the steel caused by prolonged exposure to sunlight and UV rays.

Q: How are steel pipes used in the construction of tunnels?: Steel pipes are commonly used in the construction of tunnels to provide structural support, facilitate drainage systems, and carry various utilities such as water, gas, or electrical cables. These pipes are often installed as part of the tunnel's foundation or as a protective casing for the tunnel's infrastructure.

Q: What are the different wall thicknesses available for steel pipes?: There are various wall thicknesses available for steel pipes, depending on the specific requirements and applications. Steel pipes come in different schedules, which indicate the wall thickness. The most common wall thicknesses for steel pipes are Schedule 40, Schedule 80, and Schedule 160. Schedule 40 steel pipes have a relatively medium wall thickness and are commonly used for general-purpose applications, such as conveying fluids and gases. They are suitable for low-pressure systems and are widely used in plumbing, HVAC, and irrigation systems. Schedule 80 steel pipes have a thicker wall compared to Schedule 40 pipes and are designed for high-pressure applications. They are commonly used in industrial settings, oil and gas pipelines, and high-pressure fluid transport systems. The increased wall thickness provides higher strength and durability to withstand the pressure. Schedule 160 steel pipes have the thickest wall among the commonly available options. They are designed for extremely high-pressure applications, such as in refineries, chemical plants, and power generation facilities. These pipes provide exceptional strength and can handle the intense pressure and stress found in these industrial environments. Apart from these standard schedules, there are also other wall thicknesses available for specific purposes. For example, extra-strong (XS) pipes have a thicker wall than Schedule 80 pipes and are used for applications that require even higher pressure resistance. It is important to consult with professionals or refer to industry standards to determine the appropriate wall thickness for a specific application. Factors such as fluid or gas pressure, temperature, and environmental conditions should be considered when selecting the appropriate steel pipe with the desired wall thickness.

Q: How are steel pipes used in the manufacturing of machinery?: Steel pipes are commonly used in the manufacturing of machinery for various purposes such as conveying fluids, gases, or solids, and providing structural support. They are used to transport materials within the machinery, including coolant, lubricants, and gases. Steel pipes also play a crucial role in creating the framework or structure of machinery, providing stability and strength. Additionally, they are used for creating pneumatic systems, hydraulic systems, and exhaust systems in machinery.

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