SPIRAL STEEL PIPE 46’‘48‘‘50’‘ LARGE DIAMETER PIPE

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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

Q:What does "HBB" glass steel pipe mean?: The utility model has the advantages of high strength, light weight, no deformation, smoothness of the inner surface, etc.. The friction coefficient is small, the cable is light and smooth, and the cable is not damaged. The weight is only 1/4 of the steel tube, and the 1/10 of the concrete pipe can be moved by one person. The transportation is convenient and the construction is simple and convenient.

Q:Are steel pipes magnetic?: Yes, steel pipes can be magnetic. Steel, which is primarily composed of iron, is a ferromagnetic material. This means that it can be magnetized or attracted to magnets. However, not all steel pipes are magnetic as the magnetic properties of steel can vary depending on the specific composition and production methods used. In some cases, steel can be made non-magnetic by adding certain alloying elements or by subjecting it to specific heat treatments. Additionally, the strength of the magnetic field that steel pipes can exhibit can vary depending on factors such as the thickness of the pipe and the strength of the magnet being used.

Q:What are the different types of steel pipe coatings for chemical processing plants?: There are several types of steel pipe coatings commonly used in chemical processing plants, including epoxy coatings, polyethylene coatings, and fusion-bonded epoxy coatings. These coatings provide protection against corrosion and chemical damage, ensuring the longevity and safety of the pipes in such environments.

Q:How are steel pipes protected against microbial corrosion?: Various methods are employed to safeguard steel pipes against microbial corrosion. One widely used technique entails applying coatings onto the surface of the pipes. These coatings act as a shield, effectively blocking the entry of microbes and their corrosive byproducts into the steel, thereby safeguarding it from degradation. Coatings like epoxy, polyethylene, and fusion bonded epoxy are frequently utilized to bestow this protection. Another method involves the use of corrosion inhibitors. These inhibitors are added to the fluid that flows through the pipes in order to impede microbial growth and prevent corrosion. They can be either organic or inorganic compounds that function by either eradicating the microbes or inhibiting their metabolic activity. Furthermore, ensuring proper maintenance and cleaning of the pipes is vital in preventing microbial corrosion. Regular inspections and cleaning routines aid in the elimination of any biofilms or microbial deposits that may have formed on the pipe's surface. This significantly reduces the likelihood of microbial corrosion and prolongs the lifespan of the pipes. In certain cases, cathodic protection may also be employed. This method entails utilizing sacrificial anodes or impressed current systems to supply a protective electrical current to the pipe. This current helps prevent the formation of corrosive microorganisms and shields the steel from corrosion. In summary, a combination of coatings, corrosion inhibitors, regular maintenance, and cathodic protection techniques are employed to protect steel pipes from microbial corrosion. By utilizing these strategies, the longevity and integrity of the pipes are ensured, benefiting various industries such as oil and gas, water supply, and sewage systems.

Q:What are the different methods of insulation for steel pipes?: There are several methods of insulating steel pipes, including applying a thermal insulation coating, using pipe wraps or jackets, using foam insulation, or utilizing heat shrink sleeves.

Q:Is the same specification seamless steel pipe more expensive than welded pipe?: Specifications of the same kind of seamless steel pipe than welded pipe prices are generally about 30% high, large diameter difference is greater.

Q:How are steel pipes protected during transportation?: Steel pipes are protected during transportation through a variety of measures to ensure their safety and integrity. One common method is the use of protective coatings on the exterior of the pipes. These coatings, such as epoxy or polyethylene, serve as a barrier against external factors like moisture, corrosion, and physical damage. Additionally, the pipes are often bundled together and secured with strapping or bands to prevent movement and potential collisions during transit. In some cases, pipes may also be placed within wooden crates or containers for added protection against impact and handling. Furthermore, careful loading and unloading procedures are followed to minimize any stress or strain on the pipes. By implementing these protective measures, steel pipes can safely reach their destination without compromising their quality or structural integrity.

Q:How are steel pipes used in the transportation of liquids and gases?: Steel pipes are used in the transportation of liquids and gases due to their durability, strength, and resistance to corrosion. They are commonly used in industries such as oil and gas, water supply, and chemical processing. Steel pipes ensure the safe and efficient movement of fluids over long distances, as they can withstand high pressure and extreme temperatures. Additionally, their seamless construction minimizes the risk of leaks, making them essential for transporting various liquids and gases.

Q:Can steel pipes be recycled and used for other purposes?: Yes, steel pipes can be recycled and used for other purposes. Steel is a highly recyclable material, and steel pipes are no exception. Recycling steel pipes helps to conserve natural resources and reduce the demand for new steel production. When steel pipes are recycled, they are typically sent to a recycling facility where they are sorted, cleaned, and processed. The pipes are then crushed into smaller pieces or melted down to be reshaped into new steel products. Recycled steel pipes can be used for a variety of purposes. They can be used in construction projects, such as for building bridges, roads, or buildings. They can also be used in the manufacturing of new steel products, such as automotive parts, appliances, or furniture. Additionally, recycled steel pipes can be used in the energy sector, for example, in the production of wind turbines or oil and gas pipelines. Using recycled steel pipes not only helps to reduce waste and conserve resources but also has environmental benefits. The recycling process requires less energy and produces fewer greenhouse gas emissions compared to the production of new steel. Therefore, recycling steel pipes is a sustainable option that contributes to a circular economy and helps to protect the environment.

Q:What are the common applications of steel pipes?: Steel pipes are commonly used in various applications such as water distribution systems, oil and gas pipelines, structural support in buildings and bridges, sewage systems, heating and cooling systems, and industrial processes.

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