Various caliber double sided submerged arc welded pipe

Various caliber double sided submerged arc welded pipe System 1

Various caliber double sided submerged arc welded pipe System 2

Various caliber double sided submerged arc welded pipe

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Product Description:

1、Structure of Various caliber double sided submerged arc welded pipe:

Welded Steel Tube is formed by drawing a solid billet over a piercing rod to create the hollow shell. We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of welded pipe and professioanl service.

2、‍‍Main Features of Various caliber double sided submerged arc welded pipe:

• High manufacturing accuracy

• The higher strength

• The small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Satisfy price

3、Various caliber double sided submerged arc welded pipe Specification：

Standard	Grade	（MPa）		（MPa）
		Yield strength		Tensile Strength
API SPEC 5L	PSL1
	B	≥241		≥414
	×42	≥290		≥414
	×46	≥317		≥434
	×52	≥359		≥455
	×56	≥386		≥490
	×60	≥414		≥517
	×65	≥448		≥531
	×70	≥483		≥565
	PSL2
		Min	Max	Min	Max
	B	241	448	441	758
	×42	290	496	414	758
	×46	317	524	434	758
	×52	359	531	455	758
	×56	386	544	490	758
	×60	414	565	517	758
	×65	448	600	531	758
	×70	483	621	565	758

Chemical Composition(%)

Standard	Grade	C	Mn	P	S	CEV
	Grade	Max	Max	Max	Max	Max
	PSL1					-
	B	0.26	1.2	0.030	0.030
	×42	0.26	1.3	0.030	0.030
	×46,×52,×56，X60	0.26	1.4	0.030	0.030
	X65	0.26	1.45	0.030	0.030
	X70	0.26	1.65	0.030	0.030
	PSL2					0.43
	B	0.22	1.20	0.025	0.015	0.43

1) Material: Grade:API 5L GR.B, X40, X42, X52, X56, X60, X65, X70.ST37/37-2,ST33,ST35.8,ST35.4.GB 9711.1/SY5037/GB3092

2) Specification range: OD: 406.4MM-1422MM (16”-56”)

Thickness: 8MM-50.8MM depends on OD

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing.

4、Packaging & Delivery

Packaging Details:	seaworthy package,bundles wrapped with strong steel strip
Delivery Detail:	15-30days after received 30%TT

5、FAQ ofVarious caliber double sided submerged arc welded pipe:

①How is the quality of your products?
We have many years business experience in this area, and we have professional engineer and manager team and sure we can provide you high quality production and professional service.

②How about price?
If you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust.

6、‍‍ Various caliber double sided submerged arc welded pipe Images：

Various caliber double sided submerged arc welded pipe

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: Can steel pipes be used for architectural purposes?: Yes, steel pipes can be used for architectural purposes. Steel pipes offer various advantages such as durability, strength, and versatility, making them suitable for architectural applications. They can be utilized in constructing building frames, staircases, handrails, and other structural elements. Additionally, steel pipes can be aesthetically pleasing when employed in modern and industrial designs, making them a popular choice for architectural purposes.

Q: How are steel pipes used in the manufacturing sector?: Steel pipes are used in the manufacturing sector for various purposes such as transporting fluids and gases, supplying water, and carrying out structural applications. They are commonly used in industries like oil and gas, construction, automotive, and aerospace for their durability, strength, and resistance to corrosion. Additionally, steel pipes are crucial in the manufacturing of machinery, equipment, and infrastructure, making them essential components in many manufacturing processes.

Q: What is the minimum temperature that steel pipes can handle?: The minimum temperature that steel pipes can handle depends on the specific grade and composition of the steel. Generally, steel pipes can handle extremely low temperatures without experiencing any significant issues. In fact, many types of steel are specifically designed to withstand extremely cold temperatures, making them suitable for various applications in industries such as oil and gas, construction, and cryogenics. However, it is important to note that at extremely low temperatures, steel may become more brittle, which can affect its mechanical properties. Therefore, it is essential to carefully select the appropriate grade of steel and consider any specific requirements or limitations for the intended application when determining the minimum temperature that steel pipes can handle.

Q: What is the minimum wall thickness for steel pipes?: The minimum wall thickness of steel pipes varies depending on different factors, including the pipe's intended use and the specific industry standards and regulations. Determining the minimum wall thickness generally involves considering factors like the pipe's diameter, material strength, and the pressure or load it will experience during operation. In the oil and gas industry, for instance, the minimum wall thickness for steel pipes is typically specified by industry standards such as API 5L or ASME B31.3. These standards take into account elements such as the pipe's diameter, the material's yield strength, and the maximum pressure it will encounter. In other applications, such as structural or mechanical engineering, the minimum wall thickness for steel pipes is determined by factors like the pipe's intended load-bearing capacity, the desired safety factor, and any relevant building codes or regulations. To establish the specific minimum wall thickness requirements for steel pipes in a particular application, it is essential to consult the appropriate industry standards, codes, or regulations.

Q: How to distinguish between steel pipe and spiral pipe material?: The alloy tube can be divided into: low alloy pipe, alloy pipe structure, high alloy tube, high strength tube. Bearing tube, heat resistant acid resistant stainless pipe, precision alloy (such as cutting alloy) pipe, high temperature alloy tube, etc..

Q: 25 of the steel pipe with 6 in charge of what is the difference?: Outer diameter representation of steel pipe:When the design is nominal diameter DN means diameter, should be nominal diameter DN and the corresponding product specifications table. Specification for unplasticized polyvinyl chloride pipes for building drainage, de (nominal outer diameter) * e (nominal wall thickness), (GB, 5836.1-92), polypropylene (PP) pipe for water supply, specifications by de * e (nominal outer diameter * wall thickness).

Q: What is the difference between hot-dip galvanizing and electroplating for steel pipes?: Hot-dip galvanizing and electroplating are both methods used to protect steel pipes from corrosion, but they differ in the process and the properties of the resulting coating. Hot-dip galvanizing involves immersing the steel pipe in a bath of molten zinc, which forms a thick and durable coating that bonds metallurgically with the steel. This provides excellent corrosion resistance and protection even in harsh environments. On the other hand, electroplating involves the deposition of a thin layer of zinc onto the steel pipe using an electric current. While electroplating also offers corrosion protection, the coating is typically thinner and less durable than hot-dip galvanizing. Hot-dip galvanizing is typically preferred for steel pipes that require long-lasting protection, while electroplating may be suitable for applications where a thinner coating is sufficient.

Q: Can steel pipes be used for underground power transmission?: Yes, steel pipes can be used for underground power transmission. Steel pipes are commonly used in underground power transmission systems due to their durability, strength, and resistance to corrosion. They provide a protective casing for the power cables, ensuring their safety and preventing damage from external factors such as moisture, soil movements, and potential impacts. Steel pipes also allow for easy installation, maintenance, and repair of the power transmission system. Additionally, their ability to withstand high pressure and temperature makes them suitable for carrying the high voltage electricity required for power transmission. Overall, steel pipes are a reliable and efficient choice for underground power transmission.

Q: What is the difference between steel pipes and concrete-lined pipes?: Steel pipes are made entirely of steel and are known for their strength and durability. They are commonly used in various applications, including transporting liquids and gases, as well as structural support. On the other hand, concrete-lined pipes are made of steel with a layer of concrete applied to the inner surface. This concrete lining provides additional protection against corrosion and abrasion, making them suitable for transporting corrosive materials or in aggressive environments. The concrete lining also helps in reducing friction within the pipe, resulting in improved flow efficiency.

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