Seamless steel pipe ASTM A106/API 5L/ASTM A53 grade B high quality

Seamless steel pipe ASTM A106/API 5L/ASTM A53 grade B high quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 5000 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 are the uses of welded steel pipes?: Ordinary carbon steel wire bushings (GB3640-88) are industrial and civil construction, installation of machinery, equipment and other electrical installation works for the protection of electric wire.

Q:What are the different testing methods for steel pipes?: Some of the different testing methods for steel pipes include visual inspection, ultrasonic testing, magnetic particle testing, radiographic testing, and hydrostatic testing.

Q:Are steel pipes suitable for potable water supply?: Yes, steel pipes are suitable for potable water supply. They are durable, resistant to corrosion, and can handle high water pressure, making them a reliable choice for transporting drinking water.

Q:How do you calculate the pipe pressure loss coefficient for steel pipes?: To calculate the pipe pressure loss coefficient for steel pipes, you can use the Darcy-Weisbach equation, which is a widely accepted method for determining the pressure loss in pipes due to friction. The equation is as follows: ΔP = f × (L/D) × (V^2/2g) Where: - ΔP is the pressure loss (in units of pressure, such as psi or Pa) - f is the Darcy friction factor (dimensionless) - L is the length of the pipe (in units of length, such as feet or meters) - D is the diameter of the pipe (in units of length, such as feet or meters) - V is the velocity of the fluid flowing through the pipe (in units of velocity, such as ft/s or m/s) - g is the acceleration due to gravity (in units of acceleration, such as ft/s² or m/s²) The Darcy friction factor (f) is a dimensionless parameter that represents the amount of frictional resistance in the pipe. For steel pipes, the friction factor can be determined using the Moody diagram, which is a graphical representation of the relationship between the Reynolds number (Re) and the friction factor (f) for different pipe roughness. To calculate the pressure loss coefficient, you need to find the value of the friction factor (f) based on the Reynolds number (Re) and the relative roughness of the steel pipe (ε/D). The Reynolds number is given by: Re = (ρ × V × D) / μ Where: - ρ is the density of the fluid (in units of mass per unit volume, such as lb/ft³ or kg/m³) - V is the velocity of the fluid (in units of velocity, such as ft/s or m/s) - D is the diameter of the pipe (in units of length, such as feet or meters) - μ is the dynamic viscosity of the fluid (in units of force per unit area per unit time, such as lb/ft·s or kg/m·s) Once you have the Reynolds number (Re) and the relative roughness (ε/D), you can use the Moody diagram to find the corresponding friction factor (f). The pressure loss coefficient (K) can then be calculated as: K = f × (L/D) Where: - L is the length of the pipe (in units of length, such as feet or meters) - D is the diameter of the pipe (in units of length, such as feet or meters) By using the Darcy-Weisbach equation and the Moody diagram, you can accurately calculate the pressure loss coefficient for steel pipes, which is essential for designing and analyzing fluid flow systems.

Q:How are steel pipes used in the renewable energy industry?: Steel pipes are commonly used in the renewable energy industry for various applications. They are used to transport fluids, such as water or steam, in geothermal power plants. Steel pipes are also used in solar thermal power plants for transferring heat transfer fluids. Additionally, steel pipes are utilized in the construction of wind turbine towers, providing structural support for the turbines. Overall, steel pipes play a vital role in the renewable energy industry by facilitating the efficient and reliable operation of different renewable energy technologies.

Q:What is an electric welded pipe (EFW)? Seek help！: Pipe and pipe fittings should be suitable for the gap, usually with micro force insertion is appropriate, the gap is too large or too small will affect the quality of the interface.Check the depth of the plug and slip the spigot into the socket and position correctly.

Q:What are the common standards for coating and lining of steel pipes?: The most common standards for coating and lining of steel pipes include the American Petroleum Institute (API) standards such as API 5L, API 5CT, and API 5LD. Other widely recognized standards include the American Water Works Association (AWWA) standards such as AWWA C210 and AWWA C213, as well as the National Association of Corrosion Engineers (NACE) standards such as NACE RP0188 and NACE RP0394. These standards ensure the proper selection, application, and performance of coatings and linings to protect steel pipes from corrosion and other external factors.

Q:Are steel pipes resistant to earthquakes?: Steel pipes are generally more resistant to earthquakes compared to other materials due to their strength and flexibility. However, their ability to withstand seismic events depends on various factors such as the design, installation, and support systems in place. Overall, steel pipes can provide a higher level of earthquake resistance, but proper engineering and construction practices are crucial to ensure their effectiveness.

Q:How are steel pipes used in the aerospace manufacturing industry?: Steel pipes are used in the aerospace manufacturing industry for a variety of applications, including fuel and hydraulic systems, structural components, and engine parts. They provide durability, strength, and corrosion resistance, ensuring the safety and reliability of aircraft.

Q:Can steel pipes be insulated for thermal efficiency?: Yes, steel pipes can be insulated for thermal efficiency. Insulating steel pipes helps to reduce heat loss or gain, ensuring better energy efficiency and cost savings. The insulation material, such as foam or mineral wool, is typically wrapped around the pipe to create a barrier that minimizes heat transfer.

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