SPIRAL CARBON STEEL PIPE ASTM A53

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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 sewer systems?: Yes, steel pipes can be used for sewer systems. However, they are less commonly used compared to other materials such as PVC or concrete pipes. Steel pipes are generally used for larger diameter sewer lines or in specific situations where they are preferred due to their strength and durability.

Q: What are the different methods of joining steel pipes?: There are several methods of joining steel pipes, including welding, threading, flanging, grooving, and using mechanical couplings.

Q: What is the fatigue strength of steel pipes?: The ability of steel pipes to withstand repeated cyclic loading without failing is referred to as their fatigue strength. This characteristic is of utmost importance for pipes that experience dynamic or fluctuating loads, such as those used in the oil and gas industry, transportation infrastructure, or industrial applications. Several factors can affect the fatigue strength of steel pipes, including the grade of steel, dimensions of the pipe, manufacturing process, surface conditions, and environmental factors. Generally, steel pipes with higher tensile strength and toughness exhibit better resistance to fatigue. Fatigue strength is typically determined by subjecting the pipes to cyclic loading until failure occurs, through a process known as fatigue testing. The results of these tests are then used to establish a fatigue curve or S-N curve, which illustrates the relationship between the applied stress amplitude and the number of cycles required for failure. To quantify the fatigue strength, it is common to express it as the stress amplitude required to cause failure after a specific number of cycles, such as the stress amplitude at 10 million cycles (S-N10^7). However, it is important to consider other factors such as mean stress, surface finish, and loading frequency, which can also influence fatigue strength and may require consideration in specific applications. Ultimately, the fatigue strength of steel pipes is a crucial factor in engineering design and maintenance, as it ensures the long-term integrity and reliability of the pipes under cyclic loading conditions.

Q: How are steel pipes used in the manufacturing of renewable energy systems?: Steel pipes are widely used in the manufacturing of renewable energy systems due to their durability, strength, and versatility. They are primarily used in the construction of wind turbines, solar panel frames, and the transmission of geothermal energy. Steel pipes provide the necessary structural support and stability required for these systems, ensuring their long-term functionality and reliability. Additionally, steel pipes are often used for transporting and distributing renewable energy sources, such as natural gas and hydrogen, further contributing to the overall efficiency and sustainability of these systems.

Q: Are steel pipes resistant to impact?: Yes, steel pipes are generally resistant to impact due to their high strength and durability. They can withstand external forces and are less likely to deform or break upon impact compared to other materials.

Q: Can steel pipes be used for drinking water supply?: Drinking water supply can indeed utilize steel pipes. For water distribution systems, steel pipes are widely employed owing to their robustness, longevity, and capacity to endure high pressures. Nevertheless, it is crucial to highlight that the steel employed in these pipes must be purposefully engineered and endorsed for potable water applications. This ensures the water remains uncontaminated by any detrimental substances. Furthermore, regular inspections and appropriate upkeep are imperative to avert the development of rust or corrosion, which may impact water quality.

Q: How are steel pipes used in railway infrastructure?: Steel pipes are used in railway infrastructure for a variety of purposes. They are primarily used for constructing and maintaining railway tracks, as they serve as the support structure for the rails. Steel pipes are also used for the fabrication of various components such as bridges, signal systems, and overhead power lines. Additionally, steel pipes are utilized in the construction of tunnels, culverts, and drainage systems to ensure proper water management along the railway lines.

Q: How do you protect steel pipes from external damage?: There are several ways to ensure the protection of steel pipes from external damage: 1. Coating: To prevent external damage, it is advisable to apply a protective coating on the surface of the steel pipes. Different coating options such as epoxy, polyethylene, and fusion bonded epoxy (FBE) can be used. These coatings act as a barrier between the pipes and the surrounding environment, safeguarding them from corrosion, abrasion, and other external factors. 2. Cathodic Protection: Another method to protect the steel pipes from corrosion is by implementing cathodic protection. This involves connecting a less noble metal, either through sacrificial anodes or an impressed current, to the pipes. By doing so, the corrosive elements are attracted to the sacrificial metal, sacrificing it instead of the pipes. This process helps increase the pipes' lifespan and shields them from external damage. 3. Wrapping and Taping: To provide an additional layer of protection, it is recommended to wrap the steel pipes with materials like polyethylene or polypropylene tapes. These tapes act as a barrier against moisture, chemicals, and physical impact, ensuring the pipes are shielded from external damage. Additionally, heat shrink sleeves can be utilized to offer insulation and safeguard against corrosion. 4. Underground Installation: Proper installation techniques are crucial for safeguarding steel pipes from external damage. This includes ensuring appropriate trench depth, using suitable backfill materials, and avoiding excessive bending or stress during the installation process. Employing proper bedding and padding techniques also contributes to the pipes' protection against external factors. 5. Regular Inspection and Maintenance: It is essential to conduct periodic inspections and maintenance to detect any signs of external damage early on. This can involve visual inspections, non-destructive testing, or the utilization of advanced technologies such as pipeline integrity management systems. Timely repairs and maintenance help prevent further damage and extend the lifespan of the steel pipes. In conclusion, protecting steel pipes from external damage necessitates a combination of preventative measures, proper installation techniques, and regular maintenance. By implementing these strategies, the integrity of the pipes can be preserved, preventing corrosion, abrasion, impact, and other factors that could compromise their structural integrity.

Q: How are steel pipes used in the manufacturing of food processing equipment?: Steel pipes are commonly used in the manufacturing of food processing equipment due to their durability, corrosion resistance, and ability to handle high temperatures. They are used to transport liquids, gases, and food products within the equipment, ensuring hygienic and efficient operation. Additionally, steel pipes can be easily cleaned and sanitized, making them ideal for maintaining food safety standards in the manufacturing process.

Q: How are steel pipes marked for identification?: Steel pipes are marked for identification through a process called pipe marking. This involves applying labels or markers on the surface of the pipes to provide relevant information about their specifications and characteristics. The markings typically include details such as the pipe's size, grade, material composition, manufacturer's logo or name, and any other relevant codes or standards. These markings are crucial for identification and help ensure that the correct pipes are used for specific applications, as well as for maintenance and repair purposes. Additionally, the markings also aid in quality control and traceability, enabling easy identification and tracking of pipes throughout their lifecycle. Overall, proper identification of steel pipes through clear and durable marking systems is essential for maintaining safety, efficiency, and compliance in various industries where these pipes are utilized.

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