Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 10# CNBM

Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 10# 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 do you determine the maximum allowable stress for a steel pipe?: To determine the maximum allowable stress for a steel pipe, several factors need to be considered. Firstly, the type of steel used in the pipe is crucial as different types of steel have different mechanical properties and strengths. Secondly, the dimensions and thickness of the pipe play a significant role in determining its maximum allowable stress. Thicker pipes generally have higher allowable stresses compared to thinner ones. Additionally, it is important to consider the operating conditions under which the pipe will be subjected. This includes factors such as the temperature, pressure, and the type of fluid flowing through the pipe. These conditions can greatly affect the maximum allowable stress as high temperatures or corrosive fluids may weaken the steel and reduce its strength. To determine the maximum allowable stress, engineers typically refer to industry standards and codes such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and the American Petroleum Institute (API) standards. These standards provide guidelines and formulas for calculating the maximum allowable stress based on the material properties, dimensions, and operating conditions of the pipe. It is important to note that determining the maximum allowable stress is a critical step in ensuring the structural integrity and safety of the steel pipe. It requires a thorough understanding of the materials, design considerations, and industry standards. Therefore, it is recommended to consult with experienced engineers or professionals who specialize in piping design and analysis to accurately determine the maximum allowable stress for a steel pipe.

Q: What are the different coating materials used for steel pipes?: Some common coating materials used for steel pipes include epoxy, polyethylene, polyurethane, and coal tar enamel. These coatings are applied to protect the steel from corrosion and provide a barrier against environmental elements.

Q: How are steel pipes recycled?: Steel pipes are recycled through a multi-step process that involves collection, sorting, cleaning, and melting. First, the used steel pipes are gathered from various sources such as construction sites or industrial facilities. Then, they are sorted based on their size, shape, and quality. Next, any contaminants or coatings are removed from the pipes through cleaning and stripping processes. Finally, the cleaned pipes are melted down in a furnace, and the molten steel is formed into new pipes or other steel products. This recycling process reduces the demand for new raw materials and helps conserve energy and resources.

Q: How are steel pipes connected together?: Steel pipes are typically connected together through various methods such as welding, threading, and flanging. Welding involves fusing the ends of pipes together using high heat, creating a strong and permanent connection. Threading involves screwing the ends of pipes together using threads, while flanging involves connecting pipes by flaring or bending their ends and securing them with bolts. These methods ensure a secure and reliable connection between steel pipes.

Q: How are steel pipes protected during transportation and storage?: Steel pipes are usually protected during transportation and storage through various measures such as coating them with anti-corrosion materials, wrapping them with protective films or tapes, using wooden crates or pallets for stacking and securing them with straps or bands. Additionally, pipes are often stored in covered or climate-controlled warehouses to prevent exposure to moisture and other potential damaging elements.

Q: What are the common materials used for pipe fittings in steel pipes?: Pipe fittings in steel pipes can be made from various materials, including carbon steel, stainless steel, and alloy steel. Carbon steel fittings are popular due to their affordability, strength, and durability, making them suitable for applications in oil and gas, petrochemical, and water distribution systems. On the other hand, stainless steel fittings are highly resistant to corrosion and are commonly used in industries that prioritize hygiene, such as the food and beverage and pharmaceutical sectors. Alloy steel fittings, which consist of elements like chromium, nickel, and molybdenum, are designed to enhance strength and corrosion resistance, making them ideal for high-pressure and high-temperature environments like power plants and chemical facilities. Ultimately, the selection of pipe fitting material in steel pipes depends on the specific requirements of the application and the surrounding conditions.

Q: What are the different factors affecting the flow rate of steel pipes?: There are several factors that can affect the flow rate of steel pipes. 1. Pipe diameter: The size of the pipe plays a significant role in determining the flow rate. Generally, larger diameter pipes allow for greater flow rates, as they have a larger cross-sectional area for the fluid to pass through. 2. Pipe length: The length of the pipe also affects the flow rate. Longer pipes tend to have higher friction losses, which can reduce the flow rate. Additionally, longer pipes may require higher pressure to maintain the desired flow rate. 3. Fluid viscosity: The viscosity of the fluid passing through the pipe is an important factor. Viscous fluids, such as heavy oils, have a higher resistance to flow, leading to lower flow rates. On the other hand, less viscous fluids, like water, have lower resistance and can achieve higher flow rates. 4. Pressure difference: The pressure difference across the pipe is a driving force for the flow. A higher pressure difference will result in a higher flow rate, while a lower pressure difference will reduce the flow rate. 5. Surface roughness: The roughness of the inner surface of the pipe affects the flow rate. Rougher surfaces create more turbulence and friction, resulting in a lower flow rate. Smoother surfaces, on the other hand, minimize turbulence and friction, allowing for a higher flow rate. 6. Temperature: The temperature of the fluid can impact its viscosity and density, which in turn affects the flow rate. Higher temperatures generally reduce the viscosity of fluids, leading to increased flow rates. 7. Pipe material: Different pipe materials have varying roughness and resistance to flow. Steel pipes, for example, typically have a smoother inner surface compared to pipes made of other materials, resulting in higher flow rates. 8. Pipe fittings and bends: The presence of fittings, valves, and bends in the pipe can cause flow restrictions and pressure drops, which can decrease the flow rate. Proper design and placement of these components can minimize their impact on the flow rate. Overall, the flow rate of steel pipes is influenced by a combination of these factors, and understanding their effects is crucial for designing and optimizing fluid flow systems.

Q: Welded and seamless steel pipe how to distinguish?: Different uses:Mainly used for seamless pipe or structural parts of the transmission fluid, mainly used in machinery industry, and seamed steel pipe is mainly used in the construction industry, such as water, gas, compressed air and low pressure fluid. But seamless steel tubes are used in all pressure pipes.

Q: What are the different testing methods used for steel pipes?: There are several testing methods used for steel pipes to ensure their quality and reliability. Some of the commonly used testing methods include: 1. Non-destructive Testing (NDT): NDT methods such as ultrasonic testing, magnetic particle inspection, and liquid penetrant testing are used to detect any surface or subsurface defects in the steel pipes without causing any damage to them. 2. Mechanical Testing: Mechanical testing involves conducting various tests to evaluate the mechanical properties of steel pipes, including tensile strength, yield strength, elongation, hardness, and impact resistance. These tests help determine the structural integrity and performance of the pipes. 3. Hydrostatic Testing: This method involves subjecting the steel pipes to high-pressure water to check their ability to withstand the expected operating conditions. Hydrostatic testing is performed by filling the pipes with water and pressurizing them to a predetermined level for a specified duration. Any leakage or deformation in the pipes is detected during this test. 4. Dimensional Inspection: This testing method ensures that the steel pipes meet the specified dimensional requirements. It involves measuring the diameter, wall thickness, length, and other critical dimensions of the pipes to verify compliance with the applicable standards or specifications. 5. Visual Inspection: Visual inspection is a basic method used to assess the external appearance of steel pipes. Trained inspectors visually examine the pipes for any surface defects, such as cracks, corrosion, or irregularities in shape or finish. 6. Chemical Analysis: Chemical analysis is performed to determine the composition and elemental content of the steel pipes. It helps ensure that the pipes are made from the correct grade of steel and meet the required chemical composition standards. 7. Metallographic Examination: Metallography involves examining the microstructure of steel pipes under a microscope to assess their quality and integrity. It helps identify any internal defects, such as grain boundaries, inclusions, or improper heat treatment, that may affect the overall performance of the pipes. By utilizing these testing methods, manufacturers and inspectors can ensure that steel pipes meet the necessary quality standards and are suitable for their intended applications.

Q: How does the price of steel pipes fluctuate?: The price of steel pipes can fluctuate due to several factors, including changes in raw material costs, supply and demand dynamics, global economic conditions, and trade policies. For example, a rise in the cost of iron ore or other metals used in steel production can lead to an increase in the price of steel pipes. Similarly, a decrease in demand for construction or infrastructure projects can lower the demand for steel pipes, leading to a decrease in prices. Additionally, changes in trade policies, such as tariffs or restrictions on imports or exports, can also impact steel pipe prices. Overall, the price of steel pipes is influenced by various market forces and external factors, causing it to fluctuate over time.

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