Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 16MN CNBM

Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 16MN CNBM System 1

Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 16MN CNBM

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 10 pc

Supply Capability:: 30 pc/month

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Quick Details

Thickness:	1 - 14 mm	Section Shape:	Round	Outer Diameter:	8 - 80 mm
Place of Origin:	HEB,HEB,HEB,China,FORM A,FORM E China (Mainland) Ch China (Mainland)	Secondary Or Not:	Non-secondary	Application:	Hydraulic Pipe
Technique:	Cold Rolled	Certification:	ISO9001:2008	Surface Treatment:	oil
Special Pipe:	Thick Wall Pipe	Alloy Or Not:	Is Alloy	length:	5-8m
usage3:	machine bush parts	usage4:	machine and engine pin	usage5:	tunnel and anchor rod
Test:	eddy current test,Ultrasonic Testing	usage2:	shock absorption bush	usage1:	power transmission machinery
colour:	black	name:	large-diameter hot-expanding seamless steel pipe	Grade:	10#,20#,45#,16Mn,16Mo,16mo3,Q345,ST35,St37,ST37.4,St52,10#-45#,Mo,Q195-Q345,ST35-ST52
Standard:	ANSI A210-1996,ASTM A1020-2002,ASTM A213-2001,ASTM A403-2007,ASTM A789-2001,BS 1387,BS EN10296,DIN 17175,DIN EN 10025,DIN EN 10217-1-2005,GB/T8162,GB/T8163,JIS G3459-2004,JIS G3461-2005,ASTM,BS,DIN,GB,JIS

Packaging & Delivery

Packaging Detail:	Marking: as per customer's requests. Painting varnish coating on the pipe. steel trips, woven bag
Delivery Detail:	10-45 days or as the customer's request

Seamless Carbon Hard Steel Pipe&Tube For Tunnel And Anchor Rod

Type	Manufacture & Sales OEM
Process	Seamless, Cold drawn and Cold rolled, finish-rolled
Material	20#, 10#, 45#, 35# , Q345, 16Mn, 42CrMo
size	Outer Diameter	8 –80mm
	Wall Thickness	1-14mm
	Length	5-10m
Standard	DIN st42, st45, st35, st37 and st52, GB 8162
Package	1. Bundle packing. 2. Bevelled end or plain end or warnished as per buyer's requestments. 3. Marking: as per customer's requests. 4. Painting varnish coating on the pipe. 5. Plastic caps at ends.
Delivery Time	15to20 days or as clients reqestments

Q: How are steel pipes tested for quality?: Steel pipes are tested for quality through various methods, including visual inspection, non-destructive testing (NDT) techniques such as ultrasonic testing, magnetic particle testing, and radiographic testing. Additionally, mechanical properties like tensile strength, hardness, and toughness are evaluated to ensure the pipes meet the required specifications. Various standards and guidelines are followed to ensure the quality and safety of steel pipes.

Q: How are steel pipes used in the construction of stormwater drainage systems?: Steel pipes are commonly used in the construction of stormwater drainage systems due to their durability and strength. These pipes are used to convey stormwater from various sources, such as streets and rooftops, to designated discharge points, preventing flooding and directing the water away from structures. Steel pipes are ideal for handling the high flow rates and heavy loads associated with stormwater runoff, making them an essential component in the construction of efficient and reliable drainage systems.

Q: What are the different end types for steel pipes?: Steel pipes can have various end types, each designed for a specific purpose. Some common end types include: 1. Plain End: This is the simplest type, with no threading or special treatment. It is used for non-threaded applications or when welding is required. 2. Threaded End: These ends have male threads on one or both sides, allowing for easy connection with other threaded fittings or pipes. They are commonly used in plumbing and gas applications that require easy assembly and disassembly. 3. Beveled End: Beveled ends are cut at an angle (usually 30 or 45 degrees) to facilitate welding. The smooth transition between the pipe and the weld joint ensures a strong connection. They are used in construction, oil and gas, and pipeline industries. 4. Coupling End: These ends have female threads on both sides, enabling the joining of two pipes with a coupling or fitting. They are often used in plumbing systems or for easily disassembling pipe sections. 5. Flanged End: Flanged ends have a flared or raised lip on one or both sides, allowing for easy attachment to other flanged components like valves or pumps. They are commonly used in industrial applications requiring secure connections. 6. Socket Weld End: These ends have a socket or recess on one or both sides, allowing for easy connection with socket weld fittings. They provide a strong joint and are commonly used in high-pressure applications, such as petrochemical or power plants. These examples demonstrate the variety of end types available for steel pipes. The choice depends on specific application requirements, including the need for easy assembly, disassembly, or compatibility with other fittings.

Q: How do you calculate the pipe pressure drop for steel pipes?: To calculate the pipe pressure drop for steel pipes, you can use the Darcy-Weisbach equation or the Hazen-Williams equation. The Darcy-Weisbach equation is generally more accurate but requires more information. It takes into account the pipe diameter, length, roughness, fluid flow rate, and fluid properties such as viscosity and density. The equation is as follows: ΔP = (f * L * ρ * V^2) / (2 * D) Where: ΔP is the pressure drop f is the friction factor (which can be determined using Moody's chart or by using empirical equations such as the Colebrook-White equation) L is the pipe length ρ is the fluid density V is the fluid velocity D is the pipe diameter The Hazen-Williams equation is a simplified version that is commonly used for water flow calculations. It is less accurate but easier to use. The equation is as follows: ΔP = K * Q^1.85 / (C^1.85 * d^4.87) Where: ΔP is the pressure drop K is the Hazen-Williams coefficient (which depends on the pipe material and roughness) Q is the flow rate C is the Hazen-Williams roughness coefficient d is the pipe diameter It's important to note that these equations provide an estimate of the pressure drop, and actual conditions may vary due to factors such as fittings, bends, and valves in the pipe system. Additionally, it's crucial to ensure that the units used in the equations are consistent (e.g., using SI units or US customary units).

Q: How are steel pipes used in fire protection systems?: Steel pipes are an integral part of fire protection systems, primarily used for the distribution of water or other fire suppressants in buildings. These pipes are known for their strength, durability, and resistance to high temperatures, making them ideal for withstanding the intense conditions of a fire. In fire protection systems, steel pipes are commonly used to create a network of pipes that deliver water to sprinkler heads or fire hydrants throughout a building. This network ensures that water is readily available to suppress or extinguish a fire in case of an emergency. One of the key advantages of steel pipes in fire protection systems is their ability to withstand the high pressure and flow rates required for effective fire suppression. Steel pipes can handle the forceful water flow needed to quickly and efficiently distribute water to the affected areas, helping to control and extinguish the fire as soon as possible. Additionally, steel pipes are resistant to corrosion, which is essential for maintaining the integrity of the fire protection system over time. Corrosion can weaken pipes, leading to leaks or even complete failure, which can be catastrophic in a fire situation. Steel pipes, however, have a longer lifespan and require less maintenance compared to other pipe materials, ensuring the system remains reliable and functional for years to come. Furthermore, steel pipes are often used in fire protection systems due to their fire resistance properties. Steel is inherently fire-resistant, meaning it can withstand high temperatures without deforming or losing its structural integrity. This is crucial in fire protection systems as it allows the pipes to remain intact and continue delivering water even in the midst of a fire, ensuring the safety of occupants and minimizing damage to the building. In summary, steel pipes play a vital role in fire protection systems by ensuring a reliable and efficient distribution of water or fire suppressants. Their strength, durability, resistance to high temperatures, and corrosion resistance make them an ideal choice for effectively combating fires and safeguarding lives and property.

Q: How are steel pipes protected against internal corrosion?: Steel pipes are protected against internal corrosion primarily through the use of protective coatings such as epoxy or polyethylene. These coatings act as a barrier, preventing contact between the steel surface and corrosive substances present in the transported fluids. Additionally, corrosion inhibitors are often added to the transported fluids to further reduce the likelihood of internal corrosion. Regular inspections and maintenance are also carried out to identify any potential corrosion issues and address them promptly.

Q: What is the role of steel pipe manufacturers in sustainable development?: Steel pipe manufacturers play a crucial role in sustainable development by promoting environmental responsibility, resource conservation, and reducing carbon emissions. They contribute to sustainable development by adopting cleaner production techniques, recycling waste materials, and investing in research and development to improve energy efficiency. Additionally, they prioritize worker safety and adhere to stringent quality standards, ensuring the durability and longevity of their products, which further supports sustainable construction practices.

Q: Can steel pipes be used for fire protection systems?: Yes, steel pipes can be used for fire protection systems. Steel pipes have high heat resistance and can withstand extreme temperatures, making them suitable for carrying water, foam, or other fire suppressants in fire protection systems. Additionally, steel pipes are durable, strong, and have a long lifespan, making them a reliable choice for fire safety applications.

Q: What are the factors affecting the pressure rating of steel pipes?: The factors affecting the pressure rating of steel pipes include the thickness and quality of the steel used, the diameter and length of the pipes, the temperature and fluid being transported, as well as the design and construction of the pipe system.

Q: How do you calculate the pipe thermal expansion coefficient for steel pipes?: To calculate the pipe thermal expansion coefficient for steel pipes, you need to consider the material's linear expansion coefficient and the change in temperature. The linear expansion coefficient for steel is typically around 12 x 10^-6 per degree Celsius. First, determine the initial length of the pipe, which is denoted as L0. Then, measure the change in temperature, denoted as ΔT. Next, multiply the initial length of the pipe by the linear expansion coefficient and the change in temperature: ΔL = L0 * α * ΔT. The resulting value, ΔL, represents the change in length of the steel pipe due to thermal expansion.

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