• SPIRAL WELDED STEEL PIPE 16/18/20/22'' CARBON System 1
SPIRAL WELDED STEEL PIPE 16/18/20/22'' CARBON

SPIRAL WELDED STEEL PIPE 16/18/20/22'' CARBON

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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

Packaging & Delivery

Packaging Detail:

Normal exporting packing,in container or bulk vessel or as per clients' request

Delivery Detail:

2 months after confimed contract

Specifications

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe 
Grade: X42, X46, X50, X52, X60, B, C 
OD: 1.5"-28" 
WT: SCH10-SCH160 
Brand:TPCO

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe 

 

Specifications:

 

u Standard: API 5L

u Grade: B, C, X42, X46, X50, X52, X56, X60, X65, X70, X80

u OD: 1.5"-28" 

u WT: SCH10-SCH160 

u Length: 5-12m

u Ends Finish: plain end, bevel end, grooved end

u Surface Treatment: bare, black varnished, oiled finish, red color, anti-corrosion, 3PE, FBE or epoxy coating 

u Technique: hot rolled or cold drawn

u Application: api 5l steel pipe for conveying oil, water, gas

u Invoicing: based on theoretical weight or actual weight

u Payment Terms: L/C at sight, T/T or Western Union

u Trade Terms: FOB, CFR, CIF

u Certification: ABS manufacturing assessment, ABS design assessment, API 5CT, API 5L, DNV manufacturer certificate, ISO9001 quality management system certificate, ISO14001 environment management system certificate, GB/T28001 occupational health and safety management system certificate, A1 class manufacturing license of special equipment certificate, CCS, GL, LR, SGS, TüV, PDE

 

 

Q:How do you prevent freezing in steel pipes during cold weather?
To prevent freezing in steel pipes during cold weather, there are several measures that can be taken: 1. Insulate the pipes: Insulation is an effective way to protect steel pipes from freezing. Use insulation sleeves or wraps to cover the pipes, especially in areas where they are exposed to cold temperatures. Insulation helps retain heat and prevents the pipes from reaching freezing temperatures. 2. Seal any air leaks: Check for any gaps or openings around the pipes where cold air can enter. Use caulking or weatherstripping to seal these gaps and prevent cold air from reaching the pipes. 3. Maintain a consistent temperature: Ensure that the area where the pipes are located is adequately heated and insulated. Keeping the temperature above freezing will help prevent the pipes from freezing. If the pipes are exposed to extremely low temperatures, consider using heat tape or pipe heating cables to provide additional warmth. 4. Allow water to flow: Running a small, continuous trickle of water through the pipes can help prevent freezing. The flowing water generates heat and inhibits the formation of ice within the pipes. However, this method should only be used as a last resort, as it can waste water. 5. Drain the pipes: If the steel pipes are in an area that is not regularly used or if freezing weather is expected, it may be advisable to drain the pipes completely. Turn off the water supply and open all faucets to allow the water to drain out. This eliminates any standing water that could freeze and cause the pipes to burst. It is important to note that prevention is key, as frozen steel pipes can lead to costly damages and water leaks. By implementing these measures, you can protect your steel pipes and ensure they remain functional during cold weather.
Q:How are steel pipes used in the manufacturing of hydraulic systems?
Steel pipes are commonly used in the manufacturing of hydraulic systems due to their durability, strength, and resistance to high pressure. These pipes are used to transport hydraulic fluids, such as oil or water, throughout the system, ensuring the smooth operation of various components, such as pumps, valves, and cylinders. The steel pipes provide a reliable and leak-free connection between these components, allowing for efficient transfer of power and control in hydraulic systems.
Q:What are the advantages of using steel pipes in the manufacturing of storage tanks?
There are several advantages of using steel pipes in the manufacturing of storage tanks. Firstly, steel pipes are known for their strength and durability, making them suitable for holding large volumes of liquids or gases. They can withstand high pressure and extreme weather conditions, ensuring the longevity of the storage tank. Additionally, steel pipes are resistant to corrosion, which is crucial for preventing leaks or contamination of the stored materials. Moreover, steel pipes can be easily welded, allowing for efficient and precise construction of storage tanks. Finally, steel pipes have a high recyclability rate, making them an environmentally friendly choice for storage tank manufacturing.
Q:What is the process of spiral steel tube production?
X ray flaw detection: 100% X ray industrial television inspection of internal and external weld seams, and image processing system is adopted to ensure the sensitivity of flaw detection.8. press test: the steel pipe is tested by root test on the water pressure test machine to ensure the test pressure of the steel pipe to meet the standard requirement.9. chamfering flat head: the qualified steel pipe is processed at the end of the pipe to achieve the required size of the end of the pipe10. final inspection: ultrasonic and X ray inspection, and magnetic particle inspection at the end of pipe to check for welding problems and pipe end defects.11., marking: qualified steel pipe for oil, in order to prevent corrosion, and according to user requirements for marking.
Q:What is the difference between steel pipe and HDPE pipe?
Steel pipe and HDPE pipe have different compositions and characteristics, making them suitable for various applications. Steel pipe, made of steel, is a robust and durable material commonly used in industrial and infrastructure projects that require strength and reliability. It can withstand high pressure, temperature, and heavy loads, and is resistant to corrosion for both above-ground and underground installations. On the other hand, HDPE pipe is composed of high-density polyethylene, a plastic polymer. These pipes are lightweight, flexible, and easy to install, making them ideal for water supply, drainage systems, and agricultural irrigation. They are resistant to chemicals, abrasion, and UV rays, making them suitable for indoor and outdoor use. HDPE pipes also have a long service life and require low maintenance. In terms of cost, steel pipes are generally more expensive due to the raw materials and manufacturing process involved. However, they are chosen for their superior strength and durability in applications with high pressure or extreme conditions. HDPE pipes offer a cost-effective solution for applications that don't require the same level of strength and durability. In summary, the differences between steel pipe and HDPE pipe lie in their composition, strength, durability, and cost. Steel pipe is known for its strength and reliability, while HDPE pipe offers flexibility, easy installation, and resistance to chemicals and UV rays. The choice between the two depends on the specific application and project requirements.
Q:What are the different surface finishes available for steel pipes?
There are several different surface finishes available for steel pipes, including mill finish, hot-dip galvanized, black oxide, epoxy coating, and powder coating.
Q:Can steel pipes be used in marine environments?
Yes, steel pipes can be used in marine environments. Steel is a commonly used material in marine structures due to its strength, durability, and resistance to corrosion. However, it is important to use the appropriate grade of steel and apply protective coatings to enhance its resistance to seawater corrosion. Regular maintenance and inspections are also necessary to ensure the longevity and performance of steel pipes in marine environments.
Q:Can steel pipes be used for underground stormwater systems?
Indeed, underground stormwater systems can utilize steel pipes. Renowned for their resilience and robustness, steel pipes are apt for enduring the pressure and burden of such systems. Furthermore, steel pipes possess remarkable resistance against corrosion, a crucial attribute when handling stormwater potentially laden with diverse pollutants. Nevertheless, it is imperative to adequately coat and safeguard the steel pipes to avert any potential corrosion or harm over time. Routine maintenance and inspections should also be undertaken to guarantee the integrity of the steel pipes and the overall efficacy of the underground stormwater system.
Q:How are steel pipes connected in pipeline construction?
Steel pipes are connected in pipeline construction through various methods such as welding, threading, and flanging. Welding involves joining the pipes using heat and fusion, creating a strong and durable connection. Threading involves screwing two pipes together using threads on the ends of the pipes. Flanging involves connecting the pipes by bolting together flanges on the ends of each pipe. These connection methods ensure a secure and leak-proof pipeline system.
Q:How does the price of steel pipes vary based on size and grade?
The price of steel pipes tends to vary based on their size and grade. Generally, larger pipes and higher-grade steel tend to have higher prices due to the increased raw material and manufacturing costs involved. However, market demand and supply dynamics can also play a role in the price fluctuations.

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