SPIRAL STEEL PIPE CARBON ASTM/ API/JIS/ DIN

SPIRAL STEEL PIPE CARBON ASTM/ API/JIS/ 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:What are the different methods of cutting steel pipes?: The different methods of cutting steel pipes include using a hacksaw, pipe cutter, angle grinder with a cutting disc, reciprocating saw, plasma cutter, or oxy-fuel torch.

Q:Can steel pipes be used for scaffolding and support structures?: Indeed, scaffolding and support structures can make use of steel pipes. Due to their robustness, longevity, and ability to bear substantial loads, steel pipes are commonly employed in the construction industry. They establish a steady and secure framework for scaffolding and support structures, guaranteeing the safety of workers and the stability of the construction undertaking. Moreover, steel pipes possess versatility, enabling convenient assembly and disassembly, rendering them a superb option for temporary structures such as scaffolding. Furthermore, steel pipes exhibit resistance to corrosion, rendering them appropriate for outdoor applications and ensuring the enduring existence of the scaffolding and support structures.

Q:Are steel pipes suitable for underground installations in areas with high moisture content?: In areas with high moisture content, steel pipes are commonly used for underground installations. However, it is important to consider certain factors when utilizing steel pipes in such conditions. Prolonged exposure to moisture can lead to corrosion, which is a significant concern. To mitigate this risk, it is crucial to employ steel pipes that are specifically designed for underground installations and are coated with protective materials like epoxy or polyethylene. These protective coatings act as a barrier between the steel and the surrounding moisture, preventing corrosion and prolonging the lifespan of the pipes. Furthermore, proper installation techniques, including sufficient pipe bedding and backfilling, must be adhered to in order to ensure that the pipes are adequately supported and shielded from external forces. Regular inspection and maintenance are also advisable to promptly identify any signs of corrosion or damage and address them accordingly. Overall, by taking the appropriate precautions and conducting regular maintenance, steel pipes can be a viable choice for underground installations in areas with high moisture content.

Q:What is the difference between ERW (Electric Resistance Welded) and LSAW (Longitudinal Submerged Arc Welded) steel pipes?: ERW steel pipes are manufactured using the process of high-frequency electrical current passing through the metal, creating heat that fuses the edges of the steel together. On the other hand, LSAW steel pipes are produced by submerging the steel plate in a welding zone, where an arc is struck and the edges of the plate are melted and fused together. In terms of the welding technique, ERW pipes use electrical resistance while LSAW pipes use submerged arc welding. Additionally, LSAW pipes are typically used for larger diameter and thicker wall thickness applications, while ERW pipes are commonly used for smaller diameter and thinner walls.

Q:How does galvanization protect steel pipes from corrosion?: Galvanization protects steel pipes from corrosion by creating a protective zinc layer on the surface of the steel. This zinc layer acts as a barrier, preventing moisture and oxygen from reaching the steel, thus inhibiting the formation of rust and corrosion.

Q:The difference between carbon and welded steel tubes: Quality solutionsThe carbon steels we usually refer to include carbon structural steels and carbon tool steelsThe common steel pipe is divided into two kinds: seamless steel pipe and welded steel pipe. The welded pipe of small size is straight welded, and the big size steel pipe is usually spiral welded

Q:Do steel pipes require maintenance?: Maintenance is necessary for steel pipes. Despite their durability and long lifespan, steel pipes can still experience wear and tear over time. To ensure optimal performance and extend their lifespan, regular maintenance is crucial. Inspecting the pipes for damage or corrosion is an important part of maintenance. Rust and corrosion can affect steel pipes, especially in high humidity or water-exposed environments. Regular inspections enable early detection of any problems, preventing more extensive damage and costly repairs in the future. Cleaning the pipes is another maintenance task. Over time, debris, sediment, or mineral deposits can accumulate in steel pipes. These build-ups can restrict fluid flow or impact the quality of transported materials. Regular cleaning removes these obstructions and maintains pipe efficiency. Periodic lubrication or coating may be necessary depending on the pipe's use. Lubricants and coatings reduce friction, prevent corrosion, and enhance durability. During maintenance, these can be applied to ensure smooth functioning and resistance to corrosion. In summary, regular maintenance is vital for steel pipes to maximize performance, prevent damage, and extend their lifespan. By investing time and effort in maintenance, potential issues can be identified and addressed early on, ultimately saving time and money in the long term.

Q:What is the difference between black and galvanized steel pipes?: The main difference between black and galvanized steel pipes lies in their protective coating. Black steel pipes are not coated, making them more susceptible to corrosion, while galvanized steel pipes are coated with a layer of zinc to prevent rusting and increase longevity.

Q:Can steel pipes be used for oil and gas transportation?: Indeed, steel pipes are capable of being employed for the transportation of oil and gas. In the oil and gas sector, steel pipes are extensively utilized owing to their robustness, longevity, and capacity to withstand high-pressure environments. They are frequently employed for the conveyance of crude oil, natural gas, and related substances across extensive distances. Steel pipes exhibit exceptional resistance to corrosion and are capable of enduring extreme temperatures, thus rendering them suitable for both onshore and offshore applications. Moreover, steel pipes can be easily welded, facilitating the construction of intricate pipeline networks that efficiently transport oil and gas from production fields to refineries and distribution centers.

Q:What is the difference between seamless steel pipes and seamless stainless steel pipes?: The main difference between seamless steel pipes and seamless stainless steel pipes lies in their composition. Seamless steel pipes are made from carbon steel, which contains mainly iron and carbon. On the other hand, seamless stainless steel pipes are made from an alloy of iron, chromium, and other elements like nickel and molybdenum. The addition of these elements in stainless steel pipes provides enhanced corrosion resistance, making them suitable for applications where corrosion is a concern. Additionally, stainless steel pipes typically have a higher tensile strength and better heat resistance compared to regular steel pipes.

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