Seamless HARD Carbon Steel Pipe&Tube For Tunnel And Anchor Rod 20# CNBM

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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 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: What are the factors to consider when selecting steel pipes for a project?: When selecting steel pipes for a project, there are several factors to consider. These include the pipe's diameter, thickness, and length, as well as its intended use and the specific requirements of the project. Other important factors to consider are the type of steel used, its corrosion resistance, strength, and durability. Additionally, factors such as cost, availability, and environmental impact should also be taken into account. By considering these factors, you can ensure that the selected steel pipes meet the project's needs and perform effectively.

Q: How do steel pipes handle thermal expansion and contraction?: Steel pipes handle thermal expansion and contraction by allowing for slight movement and flexibility. When heated, the steel pipe expands, and when cooled, it contracts. To accommodate these changes, expansion joints or loops are often incorporated into the pipe system. These joints or loops allow the pipe to expand and contract without causing stress or damage. Additionally, proper insulation and support are essential to minimize the effects of thermal expansion and contraction on steel pipes.

Q: What is the maximum bending radius for steel pipes?: The maximum bending radius for steel pipes typically depends on the specific grade and diameter of the pipe, but generally, it ranges from three to five times the pipe's outer diameter.

Q: How are steel pipes used in the construction of oil storage tanks?: Steel pipes are commonly used in the construction of oil storage tanks for several purposes. Firstly, they are used to create the framework and structure of the tank, providing strength and durability to support the weight of the stored oil. Additionally, steel pipes are used for the internal and external piping systems of the tank, facilitating the transportation of oil to and from the tank. Finally, steel pipes are also employed for the ventilation and drainage systems of the tank, ensuring proper airflow and drainage to prevent any potential hazards or damage.

Q: Are steel pipes suitable for transporting gas?: Yes, steel pipes are suitable for transporting gas. Steel pipes are known for their durability, strength, and resistance to corrosion, making them a reliable choice for transporting various types of gases, including natural gas, oil, and other flammable substances. Additionally, steel pipes can handle high pressure and temperature conditions, ensuring the safe and efficient transportation of gas over long distances.

Q: Can steel pipes be used for firefighting systems?: Yes, steel pipes can be used for firefighting systems. Steel pipes are commonly used for their durability, strength, and resistance to high pressure and heat. They can effectively transport water or other fire suppressants to extinguish fires efficiently, making them a reliable choice for firefighting systems.

Q: How are steel pipes classified based on their end connections?: Steel pipes can be classified based on their end connections into three main categories: threaded, socket-weld, and butt-weld.

Q: Can steel pipes be used for underground air supply systems?: Yes, steel pipes can be used for underground air supply systems. Steel pipes are often used in underground applications due to their strength, durability, and resistance to external factors such as corrosion and impact. They can withstand the pressure and temperature requirements of air supply systems and can be easily installed underground. Additionally, steel pipes have a long lifespan, making them a cost-effective choice for underground air supply systems. However, it is important to consider factors such as soil conditions, potential for corrosion, and local regulations when selecting the appropriate steel pipes for the specific underground air supply system.

Q: What is the lifespan of galvanized steel pipes?: The lifespan of galvanized steel pipes can vary depending on various factors such as the quality of the galvanization, the environment in which they are installed, and the maintenance they receive. However, on average, galvanized steel pipes can last between 40 to 70 years.

Q: What are the different types of supports used for steel pipes?: The different types of supports used for steel pipes include pipe clamps, pipe hangers, pipe saddles, and pipe rollers. These supports are designed to securely hold and suspend the steel pipes in place, ensuring proper alignment and preventing sagging or movement.

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