BS1387 Galvanized Steel Pipe

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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Specifications

BS1387 Galvanized steel pipe
Material: Q195-235
Length:1-12M

Product Name:	BS1387 Galvanized Steel Pipe
Size	OD	1/2-8” (20mm-219mm)
	Wall Thickness	0.5mm-10mm SCH30,SCH40,STD,XS,SCH80,SCH160,XXS etc.
	Length	Less than 12m
Ends	1) Plain 2) Beveled 3) Thread with Coupling or cap
End protector	1) Plastic pipe cap 2) Iron protector
Surface Treatment	1) Bared 2) Black Painted (varnish coating) 3) Galvanized 4) With Oiled 5) 3 PE, FBE, corrosion resistant coating
Technique	Electronic Resistance Welded (ERW ) Electronic Fusion Welded (EFW) Double Submerged Arc Welded (DSAW)
Type	Welded Pipe
Welded Line Type	Longitudinal
Section Shape	Round
Inspection	With Hydraulic Testing, Eddy Current , Infrared Test
Package	1) Bundle, 2) In Bulk 3) Bags 4) Clients' Requirements
Delivery	1) Container 2) Bulk carrier
Date of Delivery	According To The Quantity And Specification Of Each Order
Payment	L/C T/T
Others	Fitting as screws and flange also can be supplied.

BS1387 Galvanized Steel Pipe

Usage of Our Products:

Construction	Outside	Workshop, agricultural warehouse, residential precast unit, corrugated roof, roller shutter door, rainwater drainage pipe, retailer booth
	Inside	Door, doorcase, light steel roof structure, folding screen, elevator, stairway, vent gutter
Electrical appliance	Refrigerator, washer, switch cabinet, instrument cabinet, air conditioning, micro-wave oven, bread maker
Furniture	Central heating slice, lampshade, chifforobe, desk, bed, locker, bookshelf
Carrying trade	Exterior decoration of auto and train, clapboard, container, isolation lairage, isolation board
Others	Writing panel, garbage can, billboard, timekeeper, typewriter, instrument panel,

Q: How are steel pipes used in the manufacturing of HVAC systems?: Steel pipes are commonly used in the manufacturing of HVAC systems for various purposes. They are primarily used for transporting fluids such as water, refrigerants, and gases throughout the system. Steel pipes provide durability and strength, ensuring the safe and efficient transfer of these substances. Additionally, steel pipes are often used for structural support, acting as a framework for the HVAC system. Overall, steel pipes play a crucial role in the manufacturing of HVAC systems by facilitating fluid transportation and providing structural stability.

Q: What are the factors that affect the pressure rating of steel pipes?: There are several factors that can affect the pressure rating of steel pipes. These include the material and grade of the steel used, the wall thickness of the pipe, the diameter of the pipe, the temperature at which the pipe will be operating, and the type of fluid or gas being transported through the pipe. Additionally, factors such as corrosion, external loads, and installation methods can also impact the pressure rating of steel pipes.

Q: What is the impact of steel pipe size on flow rate and pressure?: Both the flow rate and pressure are significantly impacted by the size or diameter of a steel pipe. To begin with, the flow rate represents the amount of fluid that can pass through the pipe within a given time frame. A larger diameter allows for a greater flow rate as it provides more space for the fluid to move through. This is because a larger cross-sectional area creates less resistance for the fluid. Consequently, increasing the size of the steel pipe generally leads to an increase in flow rate. Additionally, the size of a pipe affects the pressure within it. As the fluid flows through the pipe, it encounters friction against the pipe walls, resulting in resistance. This resistance causes a drop in pressure along the length of the pipe. A smaller diameter pipe experiences higher frictional losses, leading to a greater pressure drop. Conversely, a larger diameter pipe reduces frictional losses, resulting in a lower pressure drop. Therefore, increasing the size of the steel pipe typically leads to a decrease in pressure drop. It is important to note that although increasing the size of a steel pipe generally leads to a higher flow rate and lower pressure drop, other factors can also influence these parameters. These factors include the properties of the fluid, the length and layout of the pipe, and the presence of valves or fittings. Therefore, it is crucial to consider all these factors and perform accurate calculations or simulations to determine the specific impact of steel pipe size on flow rate and pressure within a given system.

Q: Can steel pipes be used for underground pressure pipelines?: Yes, steel pipes can be used for underground pressure pipelines. Steel pipes are known for their strength, durability, and resistance to corrosion, making them suitable for underground applications where pressure is present. Additionally, steel pipes can withstand high temperatures and external forces, making them an ideal choice for underground pressure pipelines.

Q: How are steel pipes used in the aerospace manufacturing industry?: Steel pipes are commonly used in the aerospace manufacturing industry for various purposes such as hydraulic systems, fuel lines, and structural components. They offer excellent strength, durability, and resistance to high temperatures, making them ideal for carrying fluids and supporting the overall structure of aircraft.

Q: How do you prevent corrosion in steel pipes?: One effective way to prevent corrosion in steel pipes is by applying a protective coating, such as paint or epoxy, to the surface of the pipes. This barrier creates a physical barrier between the pipe and the surrounding environment, preventing moisture and corrosive agents from coming into direct contact with the steel. Additionally, regular inspection and maintenance of the pipes, including cleaning and repairing any damaged coating, can help identify and address potential issues before they lead to corrosion.

Q: How do you calculate the pipe flow rate coefficient for steel pipes?: To calculate the pipe flow rate coefficient for steel pipes, you need to consider various factors related to the pipe's dimensions, material properties, and the fluid flowing through it. The pipe flow rate coefficient, also known as the discharge coefficient (Cd), is a dimensionless value that represents the efficiency of fluid flow through a pipe. Here are the steps to calculate the pipe flow rate coefficient for steel pipes: 1. Determine the inside diameter (ID) of the steel pipe. This is the measurement of the internal cross-sectional area of the pipe through which the fluid flows. 2. Calculate the pipe's cross-sectional area (A) using the formula: A = π * (ID/2)^2. Here, π is the mathematical constant pi (approximately 3.14). 3. Measure the pressure drop (∆P) across the steel pipe. This is the difference in pressure between the pipe's inlet and outlet. 4. Measure the fluid flow rate (Q) through the pipe. This can be done using flow meters or by measuring the time it takes for a known volume of fluid to pass through the pipe. 5. Calculate the velocity (V) of the fluid flowing through the pipe using the formula: V = Q / A. Here, Q is the fluid flow rate and A is the cross-sectional area of the pipe. 6. Calculate the pipe flow rate coefficient (Cd) using the formula: Cd = Q / (A * √(2 * ∆P / ρ)). Here, ρ is the fluid density. This formula is derived from the Bernoulli's equation and takes into account the pressure drop, fluid flow rate, and fluid density. It is important to note that the pipe flow rate coefficient for steel pipes can vary depending on factors such as pipe roughness, fluid viscosity, and Reynolds number. Therefore, it is advisable to consult relevant engineering standards, such as the Darcy-Weisbach equation or the Hazen-Williams equation, to obtain more accurate values for specific pipe configurations and fluid properties.

Q: Can steel pipes handle extreme weather conditions?: Yes, steel pipes are known for their durability and ability to withstand extreme weather conditions. They are resistant to corrosion, rust, and can handle high temperatures, making them suitable for various climate conditions.

Q: Are steel pipes resistant to chemicals and corrosion?: Generally speaking, steel pipes possess a high resistance to chemicals and corrosion. To further enhance this resistance, protective layers such as zinc or epoxy are often applied to steel pipes. These coatings serve as a barrier, preventing direct contact between chemicals and the steel, thus reducing the risk of corrosion. Moreover, steel itself possesses inherent corrosion-resistant properties, making it a suitable material for applications where exposure to chemicals and corrosive elements is common. However, it is worth noting that the level of resistance may vary depending on the specific type of steel, the chosen coating, and the particular chemicals or corrosive substances involved. Therefore, it is advisable to seek advice from experts and carefully consider the specific requirements of the intended application to ensure the appropriate selection of steel and protective measures, thereby maximizing resistance to chemicals and corrosion.

Q: How are steel pipes protected against microbial corrosion?: Various methods are employed to safeguard steel pipes against microbial corrosion. One widely used technique entails applying coatings onto the surface of the pipes. These coatings act as a shield, effectively blocking the entry of microbes and their corrosive byproducts into the steel, thereby safeguarding it from degradation. Coatings like epoxy, polyethylene, and fusion bonded epoxy are frequently utilized to bestow this protection. Another method involves the use of corrosion inhibitors. These inhibitors are added to the fluid that flows through the pipes in order to impede microbial growth and prevent corrosion. They can be either organic or inorganic compounds that function by either eradicating the microbes or inhibiting their metabolic activity. Furthermore, ensuring proper maintenance and cleaning of the pipes is vital in preventing microbial corrosion. Regular inspections and cleaning routines aid in the elimination of any biofilms or microbial deposits that may have formed on the pipe's surface. This significantly reduces the likelihood of microbial corrosion and prolongs the lifespan of the pipes. In certain cases, cathodic protection may also be employed. This method entails utilizing sacrificial anodes or impressed current systems to supply a protective electrical current to the pipe. This current helps prevent the formation of corrosive microorganisms and shields the steel from corrosion. In summary, a combination of coatings, corrosion inhibitors, regular maintenance, and cathodic protection techniques are employed to protect steel pipes from microbial corrosion. By utilizing these strategies, the longevity and integrity of the pipes are ensured, benefiting various industries such as oil and gas, water supply, and sewage systems.

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