CARBON STEEL PIPE FITTINGS ASTM A234 FLANGE 18''-20''

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 30000 m.t./month

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Specifications

1.we produce seamless steel pipe
2.size:48-219*4.5-45mm
3.ISO 9000 approved
4.Market:south/east Asia,Mid-east,South America

seamless steel pipe

Material J55 K55 N80 L80 P110.etc

Standard ASTM JIS

Usage conveying oil gas ,oil pipe line,pipe material collar,oil nature gas,

Packing wooden cases or wooden pallet ,export standard package

Others:Special design available according to requirement

Anti-corrosion available and high temperature resistence

Delivery time 30days

Payment term T/T L/C

Name		API oil casing pipe
Out Diameter		Wall thickness	Material	Thread	Length
in	mm
5 1/2	139.7mm	6.20	J55/K55/N80	LTC/STC/BTC	R2
		6.98
		7.72
		9.17
		10.54
6 5/8	168.28mm	7.32	J55/K55/N80	LTC/STC/BTC	R2
		8.94
		10.59
		12.06
		12.06
8 5/8	219.08	8.94	H40	S/L/B	9 5/8R2
			J55/K55	S/L/B
		10.6	L80	L/B
		12.7	L80 C95	L/B
		14.15	P110	L/B
9 5/8	244.48	13.84	J55 K55		R2
		15.11	L80	L/B
10 3/4	273.05	11.43	J55 K55	S/B/E	R2
		13.84	P110	S/B
		15.11	P110	S/B
11 3/4	298.45	12.19	J55 K55	S/B	R2
		10.96	J55 K55	S/B
13 3/8	339.72	12.19	J55 K55 L80	S/B	R2
		10.92	J55 K55	S/B
		13.06	L80	S/B

Coupling and thread can be required according to customer requirment

Q: Can steel pipes be used for swimming pool installations?: Indeed, swimming pool installations can make use of steel pipes. Renowned for their robustness and power, steel pipes emerge as an apt alternative for both subterranean and aboveground swimming pool plumbing systems. These pipes possess the capacity to endure elevated water pressure and resist the deteriorating impact of pool chemicals. Moreover, steel pipes exhibit resilience against harsh weather conditions and can be effortlessly installed and maintained. Nevertheless, it remains crucial to guarantee appropriate treatment and coating of the steel pipes to avert rust and corrosion.

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: How are steel pipes marked for identification and traceability?: Various methods are utilized to mark and trace steel pipes for identification purposes. One prevalent technique involves the use of permanent markers or paint. These markings typically encompass vital information such as the manufacturer's name or logo, the pipe's dimensions and specifications, and the production date or batch number. Aside from surface marking, steel pipes may also be identified through the utilization of tags or labels. These tags are commonly constructed from durable materials such as metal or plastic and are securely affixed to the pipe. They entail comprehensive details regarding the pipe, including its unique identification number, material composition, and any pertinent certifications or standards it adheres to. Another method employed for identification and traceability encompasses the application of barcodes or QR codes. These codes can be scanned using specialized equipment or mobile applications, instantly granting access to comprehensive information concerning the pipe's origin, production process, and quality control measures. Barcodes and QR codes offer a more efficient and automated means of monitoring and tracing steel pipes throughout their lifespan. Moreover, some steel pipes may feature embossed or engraved markings directly on their surface. These markings are typically etched into the metal and possess the ability to withstand harsh conditions, ensuring long-term visibility and legibility. The ultimate objective of marking steel pipes is to guarantee their accurate identification and traceability throughout their lifespan. This aids in quality control, maintenance, and inspection procedures, as well as ensuring compliance with regulatory requirements. Clear and permanent markings enable manufacturers, suppliers, and users to effortlessly track and trace the history and specifications of steel pipes, facilitating better management and accountability in diverse industries such as construction, oil and gas, and infrastructure development.

Q: What are the different types of steel pipe coatings for underground applications?: There are several types of steel pipe coatings used for underground applications, including fusion bonded epoxy (FBE) coating, three-layer polyethylene (3LPE) coating, three-layer polypropylene (3LPP) coating, and coal tar enamel (CTE) coating. Each of these coatings provides different levels of protection against corrosion and abrasion, ensuring the longevity and durability of the steel pipes in underground environments.

Q: How are steel pipes protected against UV radiation?: Steel pipes are typically protected against UV radiation by applying a coating or paint that contains UV stabilizers. These stabilizers help to prevent the degradation and discoloration of the steel caused by prolonged exposure to sunlight and UV rays.

Q: How do you calculate the flow rate through a steel pipe?: Several factors need to be considered in order to calculate the flow rate through a steel pipe. The crucial factors include the pipe's diameter, the pressure difference across the pipe, and the properties of the fluid flowing through it. Accurate measurement of the inside diameter of the steel pipe is the first step. This measurement is vital as it determines the cross-sectional area through which the fluid flows. Ensure that the units used for the diameter measurement are consistent with the units used for other measurements. Next, determine the pressure difference across the pipe. This can be accomplished by measuring the pressure at two points along the pipe, typically at the inlet and outlet. It is important to take the pressure measurements at the same height in order to avoid any discrepancies. The pressure difference is usually given in units of pressure, such as psi, kPa, or bar. Once you have the diameter and pressure difference, you can utilize either the Bernoulli equation or the Darcy-Weisbach equation to calculate the flow rate. The Bernoulli equation establishes a relationship between the pressure difference and the fluid's velocity. However, this equation assumes ideal conditions and overlooks factors like friction losses, viscosity, and turbulence. On the other hand, the Darcy-Weisbach equation is more accurate as it considers these factors. To employ the Darcy-Weisbach equation, you must be aware of the fluid's properties that flow through the pipe, such as density and viscosity. These properties can be determined either through experimentation or by referring to literature values. After gathering all the necessary information, you can use the Darcy-Weisbach equation: Q = (π/4) * D^2 * √[(2 * ΔP) / (ρ * f * L)] Where: Q represents the flow rate, measured in cubic meters per second or any other consistent units. D is the diameter of the pipe, measured in meters or any other consistent units. ΔP is the pressure difference across the pipe, measured in Pascals or any other consistent units. ρ is the density of the fluid flowing through the pipe, measured in kilograms per cubic meter or any other consistent units. f signifies the friction factor, which relies on the Reynolds number and the roughness of the pipe. L represents the length of the pipe, measured in meters or any other consistent units. By substituting the appropriate values for all the variables, you can accurately calculate the flow rate through the steel pipe.

Q: Can steel pipes be used for conveying hazardous materials?: Yes, steel pipes can be used for conveying hazardous materials due to their high strength and resistance to corrosion.

Q: How are steel pipes used in structural applications?: Steel pipes are commonly used in structural applications due to their strength, durability, and versatility. They are often used as columns, beams, and braces in buildings, bridges, and other structures. Steel pipes provide excellent load-bearing capacity and can withstand high levels of stress and pressure, making them ideal for supporting heavy loads. Additionally, their hollow cylindrical shape allows for easy installation and provides space for utilities such as electrical wiring or plumbing. Overall, steel pipes contribute to the stability and integrity of structures, ensuring their safety and longevity.

Q: What are the different types of steel pipe elbows?: There are several different types of steel pipe elbows that are commonly used in various industries and applications. These types include: 1. 90-degree elbows: These elbows have a sharp 90-degree bend and are commonly used when a change in direction is required to redirect the flow of fluid or gas. They are widely used in plumbing, construction, and industrial piping systems. 2. 45-degree elbows: Similar to 90-degree elbows, 45-degree elbows also provide a change in direction but with a smaller angle. They are often used in situations where a more gradual change in flow direction is required. 3. Long radius elbows: Long radius elbows have a larger radius of curvature compared to standard elbows. This design helps to reduce fluid friction and pressure drop, making them suitable for applications that require smoother flow, such as in high-flow systems or those involving viscous fluids. 4. Short radius elbows: In contrast to long radius elbows, short radius elbows have a smaller radius of curvature. They are generally used in tight spaces where a compact design is required, but they can cause higher pressure drops due to increased fluid friction. 5. Reducing elbows: These elbows are used when there is a need to connect pipes of different diameters. They have one end with a larger diameter and the other end with a smaller diameter, allowing for a smooth transition between two pipes of different sizes. 6. Mitered elbows: Mitered elbows are custom-made elbows that are fabricated by cutting and welding multiple sections of pipe at specific angles. They are often used in situations where standard elbows cannot accommodate the required angle or when a unique design is needed. Overall, the selection of the appropriate type of steel pipe elbow depends on factors such as the application, fluid flow requirements, space constraints, and compatibility with the piping system.

Q: How are steel pipes used in the transportation of liquids and gases?: Due to their durability, strength, and resistance to corrosion, steel pipes find wide applications in the transportation of liquids and gases. Various industries such as oil and gas, water supply, and chemical processing commonly employ them. For the transportation of liquids, steel pipes serve as conduits for crude oil, refined petroleum products, water, and other fluids. These pipes are designed to withstand high pressure and maintain the integrity of the liquid being transported. The smooth inner surface of steel pipes minimizes friction, enabling efficient flow and reduced energy consumption. Moreover, the strength of steel pipes ensures that they can support the weight of the liquid without deformation or failure. In gas transportation, steel pipes are indispensable for the safe conveyance of natural gas, propane, and other compressed gases over long distances. These pipes are engineered to endure high pressures and extreme temperatures. They are also designed to prevent leakage, which is of utmost importance when dealing with flammable or toxic gases. The strength and durability of steel pipes make them ideal for withstanding the stress and strain that may occur during gas transportation. Additionally, steel pipes are frequently utilized in the construction of pipelines for long-distance transportation of liquids and gases. These pipelines can span hundreds or even thousands of kilometers, and steel pipes are the preferred choice due to their high strength and long-term reliability. They can bear the weight of the pipe and the substance being transported, as well as external forces such as soil pressure and temperature fluctuations. In summary, steel pipes play a vital role in the transportation of liquids and gases. Their durability, strength, and resistance to corrosion make them the preferred choice for conveying various substances over long distances. Whether it is for oil and gas, water supply, or chemical processing, steel pipes ensure the safe and efficient transportation of fluids and gases, contributing to the functioning of various industries and economies worldwide.

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