SPIRAL STEEL PIPE 16‘‘-48’‘

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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 pipe insulation for steel pipes?: There are several methods of pipe insulation for steel pipes, including foam insulation, fiberglass insulation, mineral wool insulation, and reflective insulation. Foam insulation is a popular choice as it provides excellent thermal insulation and is easy to install. Fiberglass insulation is another common option that offers good thermal and acoustic insulation properties. Mineral wool insulation is known for its fire resistance and is often used in high-temperature applications. Reflective insulation, on the other hand, utilizes a reflective surface to reduce heat transfer and is commonly used in hot climates.

Q: How are steel pipes tested for quality control?: Steel pipes are tested for quality control through various methods such as visual inspection, non-destructive testing, and physical testing. Visual inspection involves checking the pipes for any visible defects or inconsistencies in their appearance. Non-destructive testing methods like ultrasonic testing, magnetic particle testing, and radiographic testing are used to detect internal flaws or defects without damaging the pipes. Additionally, physical tests like tensile and impact testing are performed to evaluate the mechanical properties of the pipes. These comprehensive testing techniques ensure that steel pipes meet the required quality standards before they are used in various applications.

Q: How are steel pipes insulated to prevent freezing?: Steel pipes are typically insulated using materials such as foam or fiberglass insulation, which are wrapped around the pipes. This insulation helps to prevent freezing by providing a barrier between the cold temperatures outside and the pipes, thus maintaining the necessary heat inside the pipes to prevent freezing.

Q: How are steel pipes measured?: Steel pipes are typically measured by their outer diameter (OD) and wall thickness. The OD is measured using a caliper or tape measure, while the wall thickness is determined using specialized tools like ultrasonic gauges or micrometers. These measurements are crucial for determining the pipe's size, strength, and suitability for various applications.

Q: What are the different types of steel pipe reducers?: There are several different types of steel pipe reducers that are commonly used in various industrial applications. These reducers are designed to connect pipes of different sizes, allowing for a smooth transition in the flow of fluids or gases. Here are some of the most common types: 1. Concentric Reducers: These reducers have a symmetrical design with a centerline that aligns with the centerline of both the larger and smaller pipes. They provide a gradual reduction in pipe size, ensuring a smooth flow of material. 2. Eccentric Reducers: Unlike concentric reducers, eccentric reducers have an offset centerline. This design is useful when there is a need to prevent the accumulation of air or gases in the piping system. The eccentric reducer helps to direct any gas or air towards a vent or drain point. 3. Welded Reducers: These reducers are made by welding two pipes of different sizes together. They are commonly used in situations where a permanent connection is required. 4. Seamless Reducers: Seamless reducers are manufactured without any welded joints. They are made from a single piece of steel, which enhances their strength and durability. Seamless reducers are often preferred in applications where leak-proof connections are critical, such as in high-pressure or high-temperature environments. 5. Threaded Reducers: These reducers have male and female threads on either end, allowing for easy installation and removal. They are commonly used in low-pressure applications and are an economical choice for systems that require frequent disassembly. 6. Flanged Reducers: Flanged reducers have flanges on both ends, which are bolted together to create a tight seal. They are often used in piping systems that require easy access for maintenance or inspection. Each type of steel pipe reducer has its own advantages and is selected based on the specific requirements of the application. It is important to consider factors such as the type of fluid or gas being transported, pressure and temperature conditions, and the need for easy installation or maintenance when choosing the appropriate reducer for a particular system.

Q: Can steel pipes be used for desalination plants?: Yes, steel pipes can be used for desalination plants. Steel pipes are commonly used in desalination plants for transporting seawater, brine, and treated water due to their high strength, durability, and resistance to corrosion. They can withstand the harsh conditions and corrosive nature of saltwater, making them a suitable choice for the construction and operation of desalination plants.

Q: What are the main types of steel pipe ah? How to judge which kind of steel pipe performance is better?: Steel pipe according to the production method can be divided into two categories: seamless steel pipe and pipe joints, pipe joints as welded steel pipe.1. seamless steel tube according to the production methods can be divided into: hot-rolled seamless pipe, cold drawn tube, precision steel tube, heat expansion tube, cold spinning tube and extrusion tube.Seamless steel tubes are made of high quality carbon or alloy steel. They are hot-rolled and cold-rolled (drawn).Bundled steel pipe

Q: What are the future trends in steel pipe manufacturing?: Some of the future trends in steel pipe manufacturing include the use of advanced automation and robotics, the development of high-strength and lightweight steel materials, the implementation of sustainable and environmentally friendly manufacturing processes, and the integration of digital technologies for improved quality control and efficiency. Additionally, there is a growing focus on developing steel pipes with enhanced corrosion resistance and durability to meet the demands of various industries such as oil and gas, construction, and automotive.

Q: Can steel pipes be used for oil refineries?: Yes, steel pipes can be used for oil refineries. Steel pipes are commonly used in oil refineries due to their durability, high strength, and resistance to corrosion, making them suitable for transporting crude oil and refined products under high pressure and harsh conditions.

Q: How does the price of steel pipes fluctuate?: The price of steel pipes fluctuates due to various factors, including changes in raw material costs, supply and demand dynamics, global economic conditions, and market competition. Fluctuations in the price of steel, which is a key component in pipe manufacturing, directly impact the cost of steel pipes. Additionally, shifts in demand for steel pipes in industries such as construction, oil and gas, and automotive can also influence their pricing. Market conditions, such as trade policies and geopolitical factors, can further contribute to price fluctuations. Therefore, the price of steel pipes is subject to constant change, driven by a combination of these factors.

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