Seamless steel tube high quality hot rolled black

Seamless steel tube high quality hot rolled black

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 10000 m.t./month

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1. Commodity Name: Seamless steel pipe

2. Standard: API,GB,ASTM,ASME,DIN

3. Quality grade: 10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.

4. Dimension:

OD: 1/2"-24"

WT: 2.5-80mm, SCH10~SCH40~XXL

length: 5.8m,6m,8m,9m,12m

5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn

6. application

carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

7. Payment Terms: L/C D/A D/P T/T

8.packing and shipment

Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing

For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.

9. Surface: painted with varnish;

10. Plastic caps at ends.

11. Tolerance: OD +1%/-1%

WT +12.5%/-10%

12. Chemical composition:

Models of Steel Pipes	Chemical Component
Steel 20 (ASTM A106B)	C	Si	Mn	P	S	Cu	Ni	Cr
Steel 20 (ASTM A106B)	0.17~0.24	0.17~0.37	0.35~0.65	0.035max	0.035max	0.25max	0.25max	0.25max
Steel45 (ASTM 1045)	0.42~0.50	0.17~0.37	0.50~0.80	0.035max	0.035max	0.25max	0.25max	0.25max
16Mn(Q345B)	0.12~0.20	0.20~0.55	1.20~1.60	0.035max	0.035max	0.25max	0.25max	0.25max
45Mn2 ( ASTM1345)	0.42~0.49	0.17~0.37	1.40~1.80	0.035max	0.035max	0.3max	0.3max	0.30max

Q: What is the role of steel pipes in the mining and extraction of minerals?: Steel pipes play a crucial role in the mining and extraction of minerals. They are widely used in various mining operations to transport water, slurry, and other fluids, as well as to provide structural support and ventilation in underground mines. One of the primary uses of steel pipes in mining is for transporting water or slurry. Water is essential in the mining process for various purposes, such as dust suppression, ore processing, and site rehabilitation. Steel pipes are used to create a network of pipelines that transport water from a source, such as a dam or reservoir, to different areas within the mine site. Similarly, slurry, a mixture of water and crushed minerals, is often transported through steel pipes to processing plants or tailings dams. Steel pipes also play a critical role in providing structural support in underground mines. Underground mining operations require tunnels and shafts to access valuable mineral deposits. These tunnels and shafts need to be reinforced to withstand the immense pressure exerted by the surrounding rock and prevent collapses. Steel pipes are used as support structures, such as roof bolts and rock bolts, to reinforce the walls and roofs of these underground excavations, ensuring the safety of miners and the stability of the mine structure. Additionally, steel pipes are used for ventilation systems in underground mines. Proper ventilation is vital in mining to ensure a constant supply of fresh air, remove harmful gases, and control temperature and humidity levels. Steel pipes are used to create ventilation shafts and ducts that facilitate the flow of air throughout the mine. This helps maintain a safe and healthy working environment for miners by preventing the buildup of toxic gases, dust, and heat. In summary, steel pipes are indispensable in the mining and extraction of minerals. They are used for transporting water, slurry, and other fluids, providing structural support in underground mines, and facilitating ventilation systems. Without steel pipes, the efficient and safe extraction of minerals from mines would be significantly hindered.

Q: How to descaling galvanized steel pipe?: Is red rust or white rust, red rust is the base material rust, white rust is Zinc Coating Rust

Q: What's the difference between a cracked carbon steel tube and a liquid carbon steel tube?: Cracking carbon steel pipe higher requirements, the general carbon steel pipe to be normalized, the fluid carbon steel pipe as long as the normal annealing treatment.

Q: How are steel pipes tested for quality control?: Steel pipes are tested for quality control through various methods such as visual inspection, dimensional checks, and non-destructive testing techniques including ultrasonic testing, magnetic particle inspection, and hydrostatic pressure testing. These tests ensure that the pipes meet the required specifications, standards, and structural integrity, ensuring their quality and reliability.

Q: Outside diameter 60, thickness 3.5 seamless steel tube, how many kilograms per meter?: Outside diameter 60mm, thickness 3.5mm seamless steel tube per metre weight: 4.88 kg. When calculating the theoretical weight (Kg/m) per metre of steel tube, the theoretical weight meter of the steel tube can be checked directly, and the formula formula can also be used.

Q: Are steel pipes resistant to impact?: Yes, steel pipes are generally resistant to impact due to their high strength and durability.

Q: What are the different types of steel pipe coatings for drinking water pipelines?: There are several types of steel pipe coatings used for drinking water pipelines, including fusion bonded epoxy (FBE), polyethylene (PE), and polyurethane (PU) coatings. Each coating offers different advantages, such as corrosion resistance, durability, and smoothness, to ensure the safety and quality of drinking water.

Q: What are the different types of valves used with steel pipes?: There are several types of valves commonly used with steel pipes, including ball valves, gate valves, globe valves, check valves, and butterfly valves.

Q: How are steel pipes used in the construction of oil and gas pipelines?: Steel pipes are commonly used in the construction of oil and gas pipelines due to their strength, durability, and resistance to corrosion. These pipes are primarily used for transporting oil and gas over long distances, ensuring a reliable and efficient flow of these resources. The steel pipes are welded together to form a continuous pipeline that can withstand high pressure and extreme weather conditions. Additionally, their smooth interior surface minimizes friction and allows for efficient transportation of oil and gas.

Q: Where is the difference between seamless steel pipe and welded pipe?: Seamless pipe pressure is higher, welded pipe is generally in 10 or so MPa, now welded pipe to do seamless processing.

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