SPIRAL STEEL PIPE 32’‘ ASTM / ISO / API/ EN / DIN

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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	<0.045	<0.030	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05	<0.045	<0.030	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045	<0.045	<0.030	>235	375-500	24-26
Q345	<0.20	1.0-1.6	<0.040	<0.040	<0.55	>345	470-630	21-22

Q:Can steel pipes be used for conveying corrosive substances?: No, steel pipes are not recommended for conveying corrosive substances as they are prone to corrosion themselves.

Q:What is a valve and how is it used in steel pipes?: A valve is a device used to control the flow of fluid or gas in a pipe system. In the context of steel pipes, valves are typically installed at specific points along the pipeline to regulate the flow, stop or start the flow, and control the pressure of the fluid or gas. These valves can be manually operated or automated, allowing for efficient control and maintenance of the steel pipe system.

Q:Where is the difference between seamless steel pipe and welded pipe?: The steel tube is a hollow steel strip, used as pipe conveying fluid, such as oil, gas, water, gas, steam, in addition, the bending and torsional strength of the same, the weight is light, so it is widely used in the manufacture of machinery parts and engineering structures. It is also used to produce all kinds of conventional weapons, guns, shells and so on.Pipe classification: steel pipe seamless steel pipe and welded steel pipe (tube) two categories. It can be divided into round tube and special-shaped tube according to the sectional shape. The round steel tube is widely used, but there are some special-shaped steel tubes such as square, rectangle, semicircle, hexagon, equilateral triangle and octagon.

Q:How do steel pipes compare to other materials like PVC or copper?: Steel pipes are known for their exceptional strength and durability, making them suitable for various applications. Compared to materials like PVC or copper, steel pipes offer higher resistance to corrosion, fire, and extreme temperatures. They also have a longer lifespan and can withstand high pressure and heavy loads. However, steel pipes are generally more expensive and require regular maintenance to prevent rusting. PVC pipes, on the other hand, are more affordable, lightweight, and easy to install, but they are less durable and have lower temperature resistance. Copper pipes are known for their excellent heat conductivity and resistance to corrosion, but they are more expensive and can be prone to theft. Ultimately, the choice between steel, PVC, or copper pipes depends on the specific requirements of the project and the budget.

Q:Can steel pipes be used for underground compressed air pipelines?: Yes, steel pipes can be used for underground compressed air pipelines. Steel pipes are commonly used for underground pipelines due to their strength and durability. They have the ability to withstand high pressure and can resist corrosion and other environmental factors. Steel pipes are also known for their long lifespan, making them a reliable choice for compressed air pipelines. However, it is important to ensure that the steel pipes are properly coated and protected to prevent any potential corrosion issues. Additionally, proper installation and maintenance of the pipelines are crucial to ensure their efficiency and safety.

Q:How are steel pipes used in water transportation?: Steel pipes are commonly used in water transportation as they are durable, strong, and resistant to corrosion. These pipes are used to transport water from sources such as reservoirs, treatment plants, or wells to different areas for domestic, industrial, or agricultural purposes. Steel pipes ensure the safe and efficient flow of water, preventing leakage and contamination, and are often buried underground or used in above-ground pipelines for long-distance water transportation.

Q:Can steel pipes be used for underground sewerage systems?: Yes, steel pipes can be used for underground sewerage systems. Steel pipes are strong and durable, making them suitable for carrying sewage underground. They have a high resistance to corrosion and can withstand the pressure and load of the ground above. Steel pipes also have a long lifespan and are resistant to environmental factors such as moisture, chemicals, and temperature fluctuations. Additionally, steel pipes can be easily welded, making installation and repairs more convenient. However, it is important to ensure that the steel pipes are properly coated or lined to prevent corrosion and to comply with local regulations and standards for underground sewerage systems.

Q:Can steel pipes be used for underground air supply systems?: Yes, steel pipes can be used for underground air supply systems. Steel pipes are often used in underground applications due to their strength, durability, and resistance to external factors such as corrosion and impact. They can withstand the pressure and temperature requirements of air supply systems and can be easily installed underground. Additionally, steel pipes have a long lifespan, making them a cost-effective choice for underground air supply systems. However, it is important to consider factors such as soil conditions, potential for corrosion, and local regulations when selecting the appropriate steel pipes for the specific underground air supply system.

Q:How are steel pipes protected against lightning strikes?: Steel pipes are protected against lightning strikes by installing lightning rods or grounding systems on top of the structures where the pipes are located. These systems help to divert the electrical discharge from lightning strikes, reducing the risk of damage to the steel pipes.

Q:DN80 seamless steel tube, what is the standard thickness?: The DN80 specification is 89*6 seamless steel management formula = (outside diameter wall thickness) * wall thickness *0.02466= per meter weight

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