SPIRAL STEEL PIPE 56‘‘ ASTM API LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 56‘‘ ASTM API LARGE DIAMETER PIPE System 1

SPIRAL STEEL PIPE 56‘‘ ASTM API LARGE DIAMETER PIPE System 2

SPIRAL STEEL PIPE 56‘‘ ASTM API LARGE DIAMETER PIPE

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 3000 m.t./month

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Packaging & Delivery

Packaging Detail:	standard export packing or as customer's requirement
Delivery Detail:	within 10 - 30 days

Specifications

Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm

Spiral Welded Steel Pipes and Tubes

Product Description:

1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100

2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672

3.Wall thickness: 3.0mm-30mm

4.Outer diameter: φ168mm-3020mm

5,Length: 5m-12m or as your requirement

6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002

7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc

Q195-q345 Material Steel Pipe's Materials

Elements Material	Chemical Compsition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength(Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050< span="">	<0.045< span="">	<0.030< span="">	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05< span="">	<0.045< span="">	<0.030< span="">	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045< span="">	<0.045< span="">	<0.030< span="">	>235	375-500	24-26
Q345	<0.20< span="">	1.0-1.6	<0.040< span="">	<0.040< span="">	<0.55< span="">	>345	470-630	21-22

Q:How are steel pipes used in the manufacturing of geothermal systems?: Steel pipes are used in the manufacturing of geothermal systems primarily for their durability and heat resistance. These pipes are used to transport geothermal fluids, such as water or steam, from the underground reservoir to the surface, where they can be utilized for heating or electricity generation. The high strength and corrosion resistance of steel pipes make them ideal for withstanding the harsh conditions and high temperatures encountered in geothermal applications. Additionally, steel pipes can be easily welded and connected, allowing for efficient installation and maintenance of geothermal systems.

Q:Can steel pipes be used for underground water supply?: Indeed, steel pipes possess the capability to be employed in the provision of underground water. Due to their robustness, durability, and resistance to corrosion, steel pipes prove to be appropriate for a wide range of uses, including underground water supply. Nonetheless, it is imperative to utilize steel pipes that are explicitly manufactured for underground purposes and are furnished with a protective coating or lining to thwart corrosion. Furthermore, the installation and upkeep of these steel pipes must be conducted diligently to guarantee their long-term resilience and effectiveness within an underground water supply system.

Q:What quota is reserved for buried DN20 steel pipe?: If it is reserved for embedded pipe pre buried steel waterproof casing, set of waterproof casing steel production and installation is to set the quota items, if the outdoor installation of welded steel pipe buried steel casing pre quota items, if it is a reserved hole, then there is no need to set the quota items.

Q:What are the common maintenance practices for steel pipes?: Steel pipes require regular inspections, cleaning, and corrosion prevention as part of their maintenance. It is crucial to conduct inspections frequently to detect any signs of damage or wear. These inspections can involve visual assessments and non-destructive testing methods like ultrasonic or magnetic particle inspection. Scheduling inspections ensures early detection of issues, allowing for prompt resolution. Cleaning is also a vital maintenance practice for steel pipes. It involves the removal of dirt, debris, and scale that may accumulate on both the inside and outside of the pipes. Regular cleaning prevents blockages, enhances flow efficiency, and reduces the risk of corrosion. Corrosion prevention plays a significant role in maintaining steel pipes. Different methods, such as applying protective coatings, utilizing cathodic protection systems, or implementing corrosion inhibitors, can be employed to safeguard the pipes. These measures extend the pipes' lifespan and preserve their structural integrity over time. Additional maintenance practices may include repairing or replacing damaged sections of the pipes, maintaining proper insulation to prevent heat loss or gain, and monitoring the pipes for any signs of leakage or pressure drops. In summary, regular inspections, cleaning, and corrosion prevention are vital maintenance practices for steel pipes. Implementing these practices prolongs the pipes' lifespan and allows for the identification and resolution of potential issues before they cause significant damage or disruptions.

Q:What are the properties of steel that make it suitable for pipe manufacturing?: Steel is a highly preferred material for pipe manufacturing due to its unique properties. Firstly, steel exhibits exceptional strength and durability, making it capable of withstanding high pressure and extreme temperatures. This strength ensures that steel pipes can safely transport fluids and gases over long distances without the risk of leakage or breakage. Another important property of steel is its resistance to corrosion. Steel pipes are often exposed to various corrosive substances such as water, chemicals, and gases, which can degrade other materials over time. However, steel is highly resistant to corrosion, resulting in long-lasting and reliable pipes. Additionally, steel is a highly versatile material, allowing for various pipe sizes and shapes to be manufactured. Steel pipes can be customized to meet specific project requirements, making them suitable for a wide range of applications such as water supply, oil and gas transmission, sewage systems, and structural support. Moreover, steel is known for its excellent thermal conductivity, which is crucial for applications involving the transportation of hot or cold fluids. Steel pipes efficiently transfer heat, ensuring minimal energy loss during the process. Furthermore, steel is a recyclable material, making it an environmentally friendly option for pipe manufacturing. Steel pipes can be recycled and reused, reducing the need for new raw materials and minimizing waste generation. In conclusion, the properties of strength, durability, corrosion resistance, versatility, thermal conductivity, and recyclability make steel an ideal choice for pipe manufacturing. These properties ensure the reliability, efficiency, and longevity of steel pipes in various industries and applications.

Q:What are the industries that commonly use steel pipes?: Some of the industries that commonly use steel pipes include oil and gas, construction, manufacturing, automotive, infrastructure, water treatment, and plumbing.

Q:How are steel pipes insulated to prevent heat gain?: Steel pipes are insulated to prevent heat gain by applying a layer of thermal insulation material around them. This insulation material acts as a barrier, preventing the transfer of heat from the surrounding environment to the steel pipes. Additionally, the insulation is often covered with a protective outer layer to enhance its durability and resistance to external factors.

Q:What is the role of steel pipes in the food processing industry?: Steel pipes play a crucial role in the food processing industry by providing a reliable and hygienic means of transporting various fluids, such as water, gases, and food products. These pipes are resistant to corrosion and can withstand high temperatures and pressures, ensuring the safety and efficiency of food processing operations. They are used for conveying ingredients, cleaning agents, steam, and other necessary fluids, maintaining the integrity and quality of food products throughout the manufacturing process.

Q:What is the difference between steel pipes and cast iron pipes?: The main difference between steel pipes and cast iron pipes lies in their composition and properties. Steel pipes are made from an alloy of iron and carbon, which gives them high strength and durability. They are also resistant to corrosion and can withstand high pressure and temperature conditions. On the other hand, cast iron pipes are made from molten iron, which provides them with excellent soundproofing capabilities and resistance to fire. However, cast iron pipes are more prone to corrosion and can be brittle, making them less suitable for high-pressure applications.

Q:How are steel pipes protected against fire hazards?: Steel pipes can be protected against fire hazards through various methods such as applying fire-resistant coatings, installing fire-rated insulation, and implementing fireproofing measures such as fire sprinkler systems. Additionally, proper fire safety protocols, including regular inspections and maintenance, can contribute to preventing and minimizing fire hazards in steel pipes.

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