square pipe and gb

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

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Quick Details

Standard:BS, GB, API
Standard:BS 1387, GB 3087-1999, GB/T 8163-1999, GB/T 3087, API 5L
Grade:10#-45#, Q195-Q345
Grade:10#, 20#, 45#, Q235, Q345, Q195
Thickness:0.5 - 15 mm
Section Shape:Square
Place of Origin:Hebei, China (Mainland)
Secondary Or Not:Non-secondary
Application:Structure Pipe
Technique:ERW
Surface Treatment:Other

Packaging & Delivery

Packaging Details:	With bundles and load in containers or by bulk shipment.
Delivery Detail:	30-45 days according to the contract

Specifications

1.Size:15*15mm-400*400mm
2.W.T:0.5-12mm
3.Certification:ISO9001,CE
4.Standard:GB, ASTM.BS1387

galvanized steel pipe

1.ERW galvanized steel tubes
2.OD: 10.3-219mm
3.W.T:0.6-10mm
4.Certificate:ISO 9001-2008
5.Output per month:20000 tons

ERW galvanized steel tubes
O.D	O.D tolerance	W.T	Thickness Tolerance
19--219MM	±0.03	1.0--10MM	±0.03
Length	2--12M , according to customers' requirements
Zinc coating	275--350g/m2
International Standard	ISO 9001;2008
Standard	ASTM A 53 / BS 1387-1985
Material	Q195/Q215/Q235/Q345
Product Category :	Metallurgy, Mineral & Energy
Technique:	Welded
Packing	In bundles or according to customers' requirements
Usage	1.For low pressure liquid delivery such as water , gas and oil 2.For construction , e.g building greenhouse
Main market:	Middle east, Africa, North and South America, East and West Europe, South and southeast Asia,Australia
Place of Origin	China
HS code:	7306309000
Productivity	20000Ton/Month
Processing technology available:	Threading , coupling and with plastic caps protected
Remarks	1) Payment term : T/T 2) Trade Terms : FOB / CFR /CIF 3) Minimum quantity of order : 25 MT (25,000KGS) 4) Delivery period : 10 to 30 Days .

Q: How are steel pipes protected against chemical corrosion?: Steel pipes are protected against chemical corrosion through various methods such as applying protective coatings like epoxy or polyethylene, using sacrificial anodes, cathodic protection systems, or employing corrosion inhibitors in the pipeline system.

Q: What is the weight of steel pipes?: The weight of steel pipes can vary depending on their size, thickness, and length. However, on average, steel pipes can range from a few kilograms to several tons in weight.

Q: What is the maximum allowable stress for steel pipes?: The maximum allowable stress for steel pipes depends on various factors such as the grade of steel, diameter, wall thickness, and the intended application. It is typically determined by industry standards and codes, such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. Therefore, there is no one-size-fits-all answer to this question.

Q: How are steel pipes used in the construction of railways and transportation systems?: Various purposes necessitate the common use of steel pipes in the construction of railways and transportation systems. Bridges and tunnels, in particular, heavily rely on steel pipes. In bridge construction, steel pipes act as structural components, providing overall support and stability. As for tunnels, steel pipes serve as ventilation shafts, promoting air circulation and the removal of fumes, thus ensuring the safety of passengers and workers. Furthermore, steel pipes find utility in the construction of railway tracks. They are utilized as supports, offering a stable foundation for train travel. In this context, steel pipes are typically coated or galvanized to prevent corrosion and guarantee their longevity. Additionally, steel pipes are employed in drainage systems within railway stations and transport hubs, playing a crucial role in proper water management and the prevention of flooding. Another significant application of steel pipes in transportation systems lies in the construction of signposts and streetlights. In these structures, steel pipes often serve as the primary structural element, providing strength and durability. Their malleability and ease of fabrication make them a sought-after choice, as they can be shaped to meet specific design requirements. In summary, steel pipes assume a vital role in the construction of railways and transportation systems, offering structural support, ensuring adequate ventilation, facilitating drainage, and serving as key components in various structures. Their strength, durability, and versatility render them an ideal choice for these applications, contributing to the safe and efficient operation of transportation networks.

Q: How are steel pipes used in the transportation of fluids?: Steel pipes are commonly used in the transportation of fluids due to their durability and strength. They are used to carry various types of liquids and gases, such as water, oil, natural gas, and chemicals. Steel pipes are able to withstand high pressure and temperature, making them ideal for long-distance transportation of fluids. They are widely used in industries like oil and gas, water supply, and sewage systems, providing a reliable and efficient means of fluid transportation.

Q: What is the maximum pressure that steel pipes can withstand?: The maximum pressure that steel pipes can withstand depends on various factors such as the grade and thickness of the steel, the diameter and length of the pipe, and the specific application. However, steel pipes are known for their high strength and durability, allowing them to withstand significant pressures ranging from several hundred to several thousand pounds per square inch (psi).

Q: How are steel pipes insulated against heat loss?: Steel pipes can be insulated against heat loss using several methods. One common method is through the use of insulation materials such as mineral wool or fiberglass wraps. These materials are wrapped around the pipes to create a barrier that reduces heat transfer. Another method is the application of insulation coatings, such as foam or rubber coatings, directly onto the surface of the pipes. These coatings create a protective layer that minimizes heat loss. Additionally, thermal tape or heat-resistant tape can be used to seal any gaps or joints in the insulation, ensuring a continuous barrier against heat loss. Overall, insulating steel pipes against heat loss is essential to maintain the temperature of the fluid or gas being transported and to increase energy efficiency in various industries.

Q: What are low-pressure carbon steel tubes?: It's pressure levelThe design pressure (P) of pressure vessel is divided into four pressure levels: low voltage, medium pressure, high pressure and extra high pressure:(1) low voltage: Code L, 0.1MPa is less than or equal to p<1.6MPa(2) MP: Code M, 1.6MPa is less than or equal to p<10.0MPa(3) high voltage: Code H, 10.0MPa is less than or equal to p<100.0MPa(4) high voltage: Code U, P = 100.0MPa

Q: What are the common factors affecting the lifespan of steel pipes?: There are several common factors that can affect the lifespan of steel pipes. 1. Corrosion: Corrosion is one of the primary factors that can significantly reduce the lifespan of steel pipes. Exposure to moisture, chemicals, and harsh environmental conditions can cause the steel to rust and deteriorate over time. 2. Quality of materials: The quality of the steel used in manufacturing the pipes plays a crucial role in determining their lifespan. Higher-quality steel with better resistance to corrosion and other forms of degradation will generally have a longer lifespan compared to lower-grade materials. 3. Installation and maintenance practices: Proper installation and regular maintenance are essential for ensuring the longevity of steel pipes. Improper installation techniques, such as inadequate support or improper alignment, can lead to premature failure. Similarly, neglecting routine maintenance, such as cleaning and inspection, can accelerate the degradation process. 4. Operating conditions: The operating conditions to which steel pipes are exposed can also impact their lifespan. Factors such as temperature, pressure, and the type of fluid or gas being transported can all affect the integrity of the pipes. Extreme conditions, such as high temperatures or corrosive substances, can significantly reduce the lifespan of steel pipes. 5. Mechanical stress: Excessive mechanical stress, such as vibration, impact, or heavy loads, can weaken steel pipes over time. This stress can lead to cracking, deformation, or even complete failure if not properly managed or accounted for during the design and installation process. 6. Environmental factors: The surrounding environment can have a significant impact on the lifespan of steel pipes. Exposure to harsh weather conditions, such as extreme temperature variations or frequent freeze-thaw cycles, can accelerate the deterioration process. Additionally, the presence of pollutants or aggressive substances in the surrounding soil or water can also contribute to the degradation of steel pipes. In summary, the lifespan of steel pipes can be affected by factors such as corrosion, material quality, installation and maintenance practices, operating conditions, mechanical stress, and environmental factors. By considering and addressing these factors, it is possible to extend the lifespan of steel pipes and ensure their durability and reliability.

Q: Can steel pipes be used for oil refineries?: Yes, steel pipes can be used for oil refineries. Steel pipes are commonly used in oil refineries due to their high strength, durability, and resistance to corrosion. They can handle the high pressure and temperature requirements of the oil refining process, making them suitable for transporting and distributing various petroleum products within the refinery.

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