API 5L seamless steel pipe line pipe for liquid transportation

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 60000 m.t./month

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Packaging & Delivery

Packaging Detail:	in bundles by steel strips , and if required ,wrapped with PE cloth
Delivery Detail:	according to the quantity

Specifications

API 5L seamless steel pipe/ASTM A106/A53
1)A,B, X42, X46, X52, X56, X60, X65, X70
2)OD:13.7-6-762MM
3)WT: 1-80MM

API 5L seamless steel pipe/ASTM A106/A53

1)A,B, X42, X46, X52, X56, X60, X65, X70, St37,ST52,
2)OD:13.7-6-762MM
3)WT: 1-80MM
SCH20,40,80

1. ends can be Threaded and Coupling

2. Aplication :tramsmission of petroleum, nature gas,water,air ect

3. Pipe Coating:
   FBE (Fusion bong epoxy) coating
   3PE (Three layer polyethylene) coating
   3PP (Three layer polypropylene) coating
4. Cement mortar lining
    Internal lining for drinkable water
    Internal flow coating
5.Standard acc to: SY/T0135, SY/T0413, DIN30670/1/8, AWWAC205/210, etc

Steel grade	Machenic property			Chemical composition
	σ_s	σ_b	δ₅	C	Si	Mn	P	S	Nb	V	Ti	Cr	Ni	Cu
	min	min	min	max	max	max	max	max	min	min	min	max	max	max
A	207	311		0.21	-	0.90	0.04	0.05	-	-	-	-	-	-
B	241	413		0.26	-	1.15	0.04	0.05	-	-	-	-	-	-
X42	289	413		0.28	-	1.25	0.04	0.05	-	-	-	-	-	-
X46	317	434		0.30	-	1.35	0.04	0.05	-	-	-	-	-	-
X52	358	455		0.30	-	1.35	0.04	0.05	-	-	-	-	-	-
X56	386	489		0.26	-	1.35	0.04	0.05	0.005	0.02	0.03	-	-	-
X60	413	517		0.26	-	1.35	0.04	0.05	0.005	0.02	0.03	-	-	-
X65	448	530		0.26	-	1.40	0.04	0.05	0.005	0.02	-	-	-	-
X70	482	565		0.23	-	1.60	0.04	0.05	-	-	-	-	-	-

Q: Can steel pipes be used for HVAC systems?: Yes, steel pipes can be used for HVAC systems. Steel pipes are commonly used in HVAC systems for their durability, strength, and resistance to corrosion. They are suitable for transporting hot or cold air, water, or refrigerant throughout the system.

Q: How are steel pipes used in the construction of shipbuilding?: Steel pipes are widely used in shipbuilding as they provide structural support and are essential for various systems and components such as ventilation, fuel, and water supply. They are used to create the framework of the ship, including the hull, bulkheads, and decks. Additionally, steel pipes are crucial for piping systems that transport fluids and gases throughout the ship, ensuring its proper functioning and safety.

Q: Are steel pipes suitable for structural purposes?: Indeed, steel pipes are well-suited for structural purposes. Renowned for their robustness, longevity, and flexibility, steel pipes prove to be an exceptional option for a variety of structural uses. They can endure substantial loads, furnish exceptional structural support, and exhibit resistance to both corrosion and severe weather conditions. In construction ventures, bridges, edifices, and infrastructure systems such as water and gas pipelines, steel pipes are frequently employed. Furthermore, steel pipes can be effortlessly welded, curved, and sliced to meet specific structural prerequisites, rendering them highly adaptable to diverse construction needs. On the whole, steel pipes are widely acknowledged as a dependable and effective choice for structural applications.

Q: What are the different methods of joining steel pipes for steam applications?: Some common methods of joining steel pipes for steam applications include welding, threading, and flanging. Welding involves melting and fusing the pipes together, creating a strong and permanent connection. Threading involves cutting grooves into the ends of the pipes and screwing them together using threaded fittings. Flanging involves using a flange to connect the pipes, which is then bolted together for a secure and leak-free connection. Each method has its own advantages and considerations depending on the specific application and requirements.

Q: How do steel pipes handle vibrations?: Steel pipes are known for their ability to handle vibrations effectively. Due to their strong and rigid nature, steel pipes can withstand various types of vibrations, including mechanical vibrations and seismic activities. The resilience of steel pipes is attributed to their structural integrity and strength. Steel pipes have high tensile strength, which enables them to resist deformation or breakage when subjected to vibrations. They are also resistant to fatigue, meaning they can endure repeated vibrations without experiencing any significant damage. This makes steel pipes ideal for applications that involve constant or cyclic vibrations, such as in industrial settings or for transportation of fluids through pipelines. Moreover, steel pipes have the advantage of being able to dampen vibrations due to their mass. The weight of the steel pipe helps absorb and dissipate the energy produced by vibrations, preventing excessive movement or oscillation. This damping effect contributes to the overall stability and durability of the pipe system. To further enhance the ability of steel pipes to handle vibrations, various measures can be taken. These may include the use of vibration isolators or dampers, which are devices designed to reduce the transmission of vibrations from the surrounding environment. Additionally, proper installation techniques and regular maintenance can help ensure that steel pipes continue to perform optimally under vibration-prone conditions. In summary, steel pipes are well-suited to handle vibrations due to their strength, resistance to fatigue, and ability to dampen vibrations. Their robustness and durability make them a reliable choice for applications where vibrations are a concern, ensuring the safe and efficient transport of fluids or materials.

Q: What is the impact of temperature on steel pipes?: The impact of temperature on steel pipes can vary depending on the specific conditions and application. Generally, high temperatures can cause steel pipes to expand, potentially leading to buckling or distortion. On the other hand, extremely low temperatures can make steel pipes more brittle and prone to cracking. It is crucial to consider the temperature range within which the steel pipes will operate to ensure their structural integrity and prevent any potential failures.

Q: What is the difference between steel pipes and FRP pipes?: Steel pipes and FRP pipes are commonly used in various industries and applications, but they differ in several ways: 1. Material Composition: Steel pipes are constructed from iron and carbon alloys, along with elements like manganese, silicon, and small amounts of other metals. Conversely, FRP pipes consist of a polymer matrix reinforced with fibers such as glass or carbon. 2. Strength and Durability: Steel pipes are renowned for their exceptional strength and durability, enabling them to endure high pressures, heavy loads, and extreme temperatures. Although FRP pipes are also strong and durable, they are comparatively lighter in weight and may not possess the same level of strength as steel pipes. Nonetheless, they excel in corrosion resistance and have a longer lifespan in corrosive environments. 3. Corrosion Resistance: Steel pipes are susceptible to corrosion and thus require protective coatings or linings to prevent rust and deterioration. In contrast, FRP pipes possess inherent corrosion resistance and do not necessitate additional coatings. Consequently, they are well-suited for transporting corrosive fluids or functioning in corrosive environments. 4. Installation and Maintenance: Installing steel pipes necessitates specialized welding or threading techniques. Consequently, installation can be more labor-intensive and time-consuming, particularly for complex or large-scale projects. Conversely, FRP pipes are lightweight and easily transportable and installed. Often arriving in pre-fabricated sections, they expedite installation, reduce labor requirements, and demand minimal maintenance in comparison to steel pipes. 5. Cost: Generally, steel pipes are more expensive than FRP pipes due to the higher cost of raw materials and the need for additional corrosion protection measures. FRP pipes offer a cost-effective alternative, particularly in applications where corrosion resistance is paramount, as they eliminate the necessity for expensive coatings or linings. Ultimately, the selection between steel pipes and FRP pipes depends on the specific requirements of the application. Steel pipes are favored for their high strength, whereas FRP pipes offer advantages such as corrosion resistance, lightweight construction, and cost-effectiveness.

Q: Are steel pipes suitable for underground gas lines?: Indeed, underground gas lines can be effectively constructed using steel pipes. Renowned for their robustness and longevity, steel pipes are a dependable option for distributing gas underground. Their exceptional resistance to external elements, including corrosion and impact, is crucial for upholding the gas system's integrity. Moreover, steel pipes possess the ability to endure high pressure and temperature fluctuations, guaranteeing the secure and efficient transportation of gas beneath the surface. Nonetheless, it is vital to emphasize the significance of adhering to proper installation techniques, such as implementing corrosion protection measures, in order to ensure the steel pipes' durability and prevent any potential leaks or accidents.

Q: How do you protect steel pipes from fire?: There are several measures available to protect steel pipes from fire. One commonly used approach involves applying fire-resistant coatings or paints to the surface of the pipes. These coatings or paints are specifically designed to endure high temperatures and create a barrier that prevents heat from reaching the steel. Another effective method is to wrap the steel pipes with fire-resistant insulation materials. These materials serve as a buffer, reducing heat transfer and slowing down the spread of fire. Mineral wool or ceramic fiber blankets are commonly utilized for this purpose. It is also crucial to ensure proper installation and support for the steel pipes. This includes maintaining adequate clearance from other flammable substances and avoiding overcrowding or obstructions that could hinder the flow of air around the pipes. Sufficient spacing between pipes is also essential to prevent heat transfer between them. Moreover, incorporating firestop systems is recommended when steel pipes pass through fire-rated walls or floors. These systems consist of fire-resistant materials and seals that prevent the spread of fire and smoke through openings or penetrations in fire-rated barriers. Regular maintenance and inspections are essential to uphold the ongoing effectiveness of the fire protection measures. Any damage or deterioration of the coatings, insulation, or firestop systems should be promptly addressed to maintain the fire resistance of the steel pipes. In conclusion, a combination of fire-resistant coatings, insulation, proper installation, and maintenance practices is imperative for safeguarding steel pipes against fire hazards. These measures play a crucial role in minimizing the risk of fire-related damage and ensuring the safety of both the pipes and the surrounding environment.

Q: Can steel pipes be used for underground power transmission?: Indeed, underground power transmission can make use of steel pipes. Due to their resilience, robustness, and resistance to corrosion, steel pipes are extensively employed in underground power transmission systems. These pipes serve as a safeguarding enclosure for power cables, guaranteeing their security and shielding them from potential harm caused by external elements like moisture, soil movements, and potential impacts. Moreover, the use of steel pipes facilitates easy installation, maintenance, and repair of the power transmission system. Additionally, their ability to withstand high pressure and temperature renders them suitable for conveying the high voltage electricity essential for power transmission. All in all, steel pipes are a dependable and effective choice for underground power transmission.

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