SPIRAL STEEL PIPE 56’‘ 60’‘ LARGE DIAMETER PIPE

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 3000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

You Might Also Like

Seamless Carbon And Alloy Steel Mechanical Tubing

Hot-rolled seamless steel tubes for hydraulic pillar service

ERW Welded Pipes

API 5L Seamless line Pipe J55

Seamless Steel Alloy Pipe with Factory Price

Seamless steel tube balck ASTM A 53 GRADE B

Seamless tube ASTM A53/ASTM A 106/API 5L

America Welded Black ERW Steel Tube A500 ASTM A53

Packaging & Delivery

Packaging Detail:	standard export packing or as customer's requirement
Delivery Detail:	within 10 - 30 days

Specifications

Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm

Spiral Welded Steel Pipes and Tubes

Product Description:

1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100

2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672

3.Wall thickness: 3.0mm-30mm

4.Outer diameter: φ168mm-3020mm

5,Length: 5m-12m or as your requirement

6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002

7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc

Q195-q345 Material Steel Pipe's Materials

Elements Material	Chemical Compsition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength(Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050< span="">	<0.045< span="">	<0.030< span="">	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05< span="">	<0.045< span="">	<0.030< span="">	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045< span="">	<0.045< span="">	<0.030< span="">	>235	375-500	24-26
Q345	<0.20< span="">	1.0-1.6	<0.040< span="">	<0.040< span="">	<0.55< span="">	>345	470-630	21-22

Q: What is the difference between steel pipes and PVC-M pipes?: The main difference between steel pipes and PVC-M pipes lies in their material composition. Steel pipes are made of steel, which gives them higher strength and durability. They are commonly used for high-pressure applications and in areas where the pipes may be exposed to extreme conditions or corrosive substances. On the other hand, PVC-M pipes are made of polyvinyl chloride modified with certain additives to enhance their impact resistance and toughness. They are lightweight, easy to install, and resistant to corrosion, making them suitable for various applications, including water supply, irrigation, and drainage systems. While steel pipes offer superior strength, they are more expensive and require regular maintenance, such as anti-corrosion treatments. PVC-M pipes, on the other hand, are more affordable, require minimal maintenance, and can be easily joined using solvent welding or mechanical fittings. In summary, the choice between steel pipes and PVC-M pipes depends on factors such as the intended use, budget, and environmental conditions.

Q: Can steel pipes be galvanized?: Yes, steel pipes can be galvanized. Galvanizing is a process of applying a protective zinc coating to steel or iron to prevent corrosion. The steel pipes are submerged in a bath of molten zinc, which forms a metallurgical bond with the steel, creating a corrosion-resistant coating. Galvanizing is commonly used in various applications, such as plumbing, construction, and outdoor structures, to extend the lifespan of steel pipes and prevent rusting.

Q: How do you calculate the bending moment of a steel pipe?: To determine the bending moment of a steel pipe, one must take into account both the applied load and the structural characteristics of the pipe. The bending moment quantifies the internal forces within the pipe caused by the applied load. To calculate the bending moment, one can use the following equation: Bending Moment = Load x Distance In this equation, the load represents the external force acting on the pipe, and the distance refers to the separation between the point of load application and the point where the bending moment is being evaluated. For an accurate bending moment calculation, it is necessary to consider the properties of the steel pipe. These properties encompass the pipe's cross-sectional area, second moment of area (also known as the moment of inertia), and the modulus of elasticity. The second moment of area demonstrates the pipe's resistance to bending and can be computed based on the dimensions of the pipe's cross-section. The modulus of elasticity signifies the pipe's stiffness and can be obtained from material properties data. Once the load, distance, cross-sectional area, moment of inertia, and modulus of elasticity are determined, they can be inputted into the bending moment equation to ascertain the bending moment for the steel pipe. It is important to recognize that the calculation of bending moment assumes linear elastic behavior, which implies that the pipe does not surpass its elastic limit nor undergo plastic deformation. If the pipe is exposed to loads surpassing its capacity, the bending moment calculation may not accurately depict the actual behavior of the pipe. In such instances, it is recommended to consult a structural engineer or employ more sophisticated analysis methods to precisely evaluate the bending moment.

Q: What are the different coating materials used for steel pipes?: There are several different coating materials used for steel pipes, including epoxy, polyurethane, coal tar enamel, and zinc. These coatings are applied to the steel pipes to provide protection against corrosion and to enhance their durability and lifespan.

Q: How are steel pipes used in the power generation sector?: Steel pipes are commonly used in the power generation sector for various applications such as transporting water, steam, and other fluids within power plants. They are used for conveying high-pressure steam to drive turbines and generate electricity, as well as for transporting cooling water to regulate temperature in power plants. Additionally, steel pipes are used in the construction of power plant infrastructure, including the fabrication of boiler tubes, condenser tubes, and other critical components that ensure efficient and reliable power generation.

Q: How can galvanized steel tubes be painted on the surface?: Galvanized parts are nonferrous metals, ferrous metals are black, all metal adhesion is poor;

Q: Can steel pipes be used for wastewater treatment?: Indeed, wastewater treatment can make use of steel pipes. The construction of wastewater treatment plants and systems frequently incorporates steel pipes owing to their robustness, resilience, and resistance to corrosion. Their exceptional suitability lies in their capacity to handle the transportation and distribution of wastewater, given their ability to withstand substantial pressure and temperature fluctuations. Moreover, steel pipes have the potential to be coated or lined with materials that offer supplementary protection against corrosion and chemical reactions with the wastewater. Nonetheless, it is crucial to ensure the adequate upkeep, inspection, and replacement of steel pipes when required, to avert potential leaks or failures that could jeopardize the wastewater treatment process.

Q: How do you calculate the pipe flow velocity for steel pipes?: To calculate the pipe flow velocity for steel pipes, you can use the Manning's formula or the Darcy-Weisbach equation. 1. Manning's formula: This formula is commonly used for open channel flow but can also be applied to partially filled pipes. It calculates the velocity based on the pipe's hydraulic radius, slope, and Manning's roughness coefficient. The formula is as follows: Velocity (V) = (1.486/n) * (R^2/3) * (S^1/2) Where: - V is the velocity - n is the Manning's roughness coefficient (which can be obtained from reference tables) - R is the hydraulic radius (cross-sectional area divided by wetted perimeter) - S is the slope of the energy grade line 2. Darcy-Weisbach equation: This equation is widely used for pipe flow calculations and is based on the principle of energy conservation. It calculates the velocity based on the pipe's diameter, roughness coefficient, and the head loss due to friction. The formula is as follows: Velocity (V) = (2 * g * hL)^0.5 Where: - V is the velocity - g is the acceleration due to gravity (approximately 9.81 m/s^2) - hL is the head loss due to friction, which can be calculated using the Darcy-Weisbach equation: hL = (f * L * V^2) / (2 * g * D) Where: - f is the Darcy friction factor (which depends on the Reynolds number and pipe roughness) - L is the length of the pipe - D is the diameter of the pipe Both formulas require some input parameters such as pipe dimensions, roughness coefficients, and slope. These parameters can be obtained from engineering references or pipe manufacturer specifications. It is important to note that these formulas provide approximate values and may require iterations or adjustments for accurate results.

Q: What is the maximum length of a steel pipe?: The maximum length of a steel pipe can vary depending on several factors such as the manufacturing process, transportation limitations, and structural requirements. However, in general, steel pipes can be manufactured in lengths up to 80 feet or more.

Q: What are the standard dimensions and weight of steel pipes?: The standard dimensions and weight of steel pipes can vary depending on the specific type and grade of steel pipe being used. However, common standard dimensions for steel pipes include sizes ranging from 1/8 inch to 48 inches in diameter, with wall thicknesses ranging from Schedule 5 to Schedule 160. As for weight, it also depends on the diameter and wall thickness, but a general guideline is that a 1-inch diameter steel pipe with a 1/4 inch wall thickness weighs approximately 1.02 pounds per foot. It is important to note that these dimensions and weights can vary based on the specific standards and requirements set by different industries and applications.

Send your message to us

*Email

*TEL

*Quantity

*Unit