CARBON STEEL PIPE FITTINGS ASTM A234 TEE BEND FANGE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 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: How do you inspect steel pipes for defects?: The inspection of steel pipes for defects requires a methodical approach that combines visual examination, non-destructive testing (NDT) techniques, and specialized equipment. The following are the typical steps undertaken to inspect steel pipes for defects: 1. Visual Examination: Commence by visually inspecting the external surface of the pipe, searching for any visible indications of defects, including cracks, dents, or corrosion. Particular attention should be given to welds, joints, and areas prone to stress or damage. 2. Ultrasonic Testing (UT): Ultrasonic testing is commonly employed to identify internal defects in steel pipes. This technique involves transmitting ultrasonic waves into the pipe and then interpreting the echoes received. Any irregularities in the internal structure, such as cracks or voids, can be identified and analyzed. 3. Magnetic Particle Inspection (MPI): MPI is a widely utilized technique for detecting defects on or near the surface, such as cracks, seams, or other discontinuities. This method involves applying a magnetic field to the pipe and subsequently applying ferromagnetic particles (usually iron-based) to the surface. These particles accumulate and form visible indications at areas where magnetic flux leakage is caused by defects. 4. Eddy Current Testing (ECT): Eddy current testing is suitable for detecting surface and near-surface defects in conductive materials like steel. This technique involves inducing an alternating current into the pipe and monitoring changes in the electrical currents induced by any present defects. These changes are then analyzed to identify and evaluate the defects. 5. Radiographic Testing (RT): Radiographic testing is conducted by exposing the steel pipe to X-rays or gamma rays and capturing radiographic images of the pipe. This technique allows for the detection of internal defects, such as cracks, porosity, inclusions, or variations in wall thickness. The radiographic images are subsequently examined for any indications of defects. 6. Dye Penetrant Inspection (DPI): DPI is a method used to identify defects on the surface of steel pipes. It involves applying a liquid dye to the surface, which penetrates into any surface cracks or flaws. After sufficient time for the dye to seep in and react, excess dye is removed, and a developer is applied to draw out the dye from the defects, rendering them visible. 7. Pressure Testing: Pressure testing entails pressurizing the steel pipe to a predetermined level and monitoring for any pressure drops or leaks. This test ensures that the pipe can withstand the required pressure without any structural defects. It is worth noting that the choice of inspection technique depends on various factors, such as the type of defect being sought, the size and characteristics of the pipe, and the specific industry standards and regulations. Inspection professionals with expertise in NDT methods and equipment are typically employed to ensure precise and dependable results.

Q: What is the cost of steel pipes compared to other pipe materials?: The cost of steel pipes can differ from other pipe materials depending on various factors, such as size, grade, and availability. However, steel pipes typically offer more cost-effectiveness compared to alternative materials. This is due to the widespread availability and versatility of steel, which allows for easy manufacturing and fabrication into different pipe sizes and shapes. When compared to materials like copper, stainless steel, or plastic, steel pipes are often more affordable due to their lower manufacturing costs. Furthermore, steel pipes have a longer lifespan and superior durability, making them a cost-effective choice in the long term. They exhibit resistance to corrosion, can withstand high pressure and temperature, and find applications in plumbing, construction, and infrastructure projects. It is worth mentioning that the cost of steel pipes can still fluctuate based on market conditions, demand, and location. Nevertheless, overall, steel pipes are generally considered a cost-effective option when compared to other pipe materials.

Q: How are steel pipes coated to prevent corrosion?: Steel pipes are coated to prevent corrosion using various methods and materials. One common method is applying a protective layer of paint or epoxy on the surface of the pipe. This coating acts as a barrier between the steel and the external environment, preventing moisture and corrosive substances from coming into direct contact with the metal. Another technique involves using a process called galvanization, where the steel pipes are coated with a layer of zinc. Zinc is highly resistant to corrosion and acts as a sacrificial anode, meaning it will corrode in place of the steel if any damage occurs to the coating. This sacrificial protection ensures that the steel remains intact and corrosion-free. Additionally, steel pipes can be coated with polyethylene or polypropylene materials through a process called fusion bonding. In this method, the plastic material is melted onto the steel surface, creating a strong bond that provides excellent resistance against corrosion. This type of coating is commonly used in offshore and underground pipelines. Furthermore, another technique for preventing corrosion is the application of a layer of corrosion-resistant alloy onto the steel pipe. This alloy is typically a combination of metals such as nickel, chromium, and molybdenum, which provide superior protection against corrosion in harsh environments. Overall, the choice of coating method depends on various factors such as the operating conditions, the type of corrosive substances present, and the expected lifespan of the steel pipes. By effectively applying these coatings, steel pipes can be safeguarded against corrosion, extending their durability and ensuring the integrity of the infrastructure they are used in.

Q: What's the difference between a cracked carbon steel tube and a liquid carbon steel tube?: Test: cracking carbon steel pipe in addition to eddy current testing, but also to do ultrasonic testing, and liquid carbon steel tubes are generally only eddy current testing.

Q: What are the different methods of pipe threading for steel pipes?: The different methods of pipe threading for steel pipes include manual threading, machine threading, and electric threading. Manual threading involves using a handheld die or tap to create the threads on the pipe. Machine threading utilizes power-driven machines that can thread multiple pipes simultaneously, offering efficiency and accuracy. Electric threading is similar to machine threading, but it uses an electric motor to drive the threading process.

Q: How long is the seamless tube?: Seamless steel tube specification: 8-1240 * 1-200mm

Q: What is the thermal expansion coefficient of steel pipes?: The thermal expansion coefficient of steel pipes is typically around 0.000011 to 0.000012 per degree Celsius, which means that for every degree Celsius increase in temperature, the length of the steel pipe will expand by approximately 0.0011% to 0.0012%.

Q: How does galvanization protect steel pipes from corrosion?: Galvanization protects steel pipes from corrosion by creating a protective zinc layer on the surface of the steel. This zinc layer acts as a barrier, preventing moisture and oxygen from reaching the steel, thus inhibiting the formation of rust and corrosion.

Q: What is the maximum length of a steel pipe?: The maximum length of a steel pipe can vary depending on various factors such as the manufacturing process, transportation constraints, and practical limitations. However, steel pipes can typically be manufactured and transported in lengths ranging from a few meters to several hundred meters.

Q: What are the different types of supports used for underground steel pipes?: The different types of supports used for underground steel pipes include concrete encasement, pipe bedding, pipe cradles, and pipe hangers. Concrete encasement involves surrounding the pipe with a layer of concrete to provide additional strength and stability. Pipe bedding involves placing a layer of granular material underneath the pipe to distribute the load and prevent excessive deflection. Pipe cradles are structures that support the pipe from underneath, typically made of concrete or steel. Pipe hangers are used to suspend the pipe from above, typically attached to a structure or support system. These supports help ensure the stability and longevity of underground steel pipes.

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