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Henghui Steel have been committed to providing the world with higher quality and lower price Chinese steel.

Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 1
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 2
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 3
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 4
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 5
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 6
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 7
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 8
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 9
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 1
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 2
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 3
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 4
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 5
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 6
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 7
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 8
Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel 9

Spiral Welded Steel Pipe Manufacturer 5.0mm-22mm by HengHui Steel

Size:
168mm-3020mm
Thickness:
5.0mm-22mm
Minimum order quantity:
28 tons
Material grade:
0235,0345,16MN
Shipping term:
FOB/CIF/CFR
Inquiry

Company Advantages

· The shape of HengHui Steel spiral welded steel pipe manufacturer is more compact and is convenient to use.

· Excellent product quality and comprehensive functions give users a better experience.

· A high standard spiral welded steel pipe manufacturer production base has been established by Tianjin HengHui Steel Group Co., Ltd..

What is Seamless pipe

Spiral welded pipe: The low carbon carbon structural steel or low alloy structural steel strip is rolled into a tube blank according to a certain helix Angle (called forming Angle), and then the pipe seam is welded together, which can produce large diameter steel pipe with a narrower strip.


The specification is expressed by the outer diameter * wall thickness, and the welded pipe should ensure that the water pressure test, the tensile strength of the weld and the cold bending performance should meet the requirements.

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Our company's inspection process

Raw material inspection -- leveling inspection -- butt welding inspection -- forming inspection -- internal welding inspection -- external welding inspection -- cut pipe inspection -- Ultrasonic inspection -- groove inspection -- outline dimension inspection -- X-ray inspection -- water pressure test -- final inspection  


Since spiral welded pipe is often used in major projects such as oil exploration, our company has been implementing absolute safety standards in the quality testing of the product to provide customers with absolutely high quality products. In order to ensure product quality, we have developed a perfect quality plan, on-site work procedures and inspection and test plans. 

Our product features

The difference between spiral welded pipe and straight welded pipe

Technical comparison: A simple comparison of the technical characteristics of spiral welded pipe and straight welded pipe:

Metallurgical properties of materials

Straight seam submerged arc welded pipe is made of steel plate, while spiral welded pipe is made of hot rolled coil. The rolling process of hot strip steel unit has a series of advantages, and it has the metallurgical process ability to produce high-quality pipeline steel. For example, a water cooling system is installed on the output bench to accelerate cooling, which allows the use of low alloy components to achieve special strength levels and low temperature toughness, thereby improving the weldability of the steel. But this system is basically absent in steel plate production plants. The alloy content (carbon equivalent) of the coil is often lower than that of similar grades of steel, which also improves the weldability of spiral welded pipes.

It should be noted that because the rolling direction of the spiral welded pipe is not the direction of the vertical steel pipe axis (its clamping depends on the spiral Angle of the steel pipe), and the rolling direction of the steel plate of the straight seam steel pipe is perpendicular to the axis direction of the steel pipe, the cracking resistance of the spiral welded pipe material is better than that of the straight seam steel pipe.

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Welding process

In terms of welding process, spiral welded pipe and straight seam steel pipe welding method is the same, but the straight seam welded pipe will inevitably have a lot of T-weld, so the probability of welding defects is greatly increased, and the welding residual stress at the T-weld is large, and the weld metal is often in a three-way stress state, increasing the possibility of cracking.

Moreover, according to the process regulations of submerged arc welding, each weld should have an arc starting point and an arc quenching point, but each straight seam welded pipe can not reach the condition when welding the ring joint, so there may be more welding defects at the arc quenching point.

Strength characteristic

When a pipe is subjected to internal pressure, two main stresses are usually generated on the wall of the pipe, namely radial stress δY and axial stress δX. The resultant stress δ= δy (l/4sin2α+cos2α)1/2 at the weld, where α is the helix Angle of the weld of the spiral welded pipe.

The spiral Angle of the spiral welded pipe is generally 50-75 degrees, so the synthetic stress at the spiral weld is 60-85% of the main stress of the straight welded pipe. Under the same working pressure, the wall thickness of spiral welded pipe with the same diameter can be reduced than that of straight welded pipe.


According to the above characteristics, we can know:

A. When the spiral welded pipe explodes, because the normal stress and synthetic stress of the weld are relatively small, the blasting opening generally does not originate at the spiral weld, and its safety is higher than that of the straight welded pipe.

B. When there are parallel defects near the spiral weld, the expansion risk of the spiral weld is not as great as that of the straight weld due to its small force.

C. Since the radial stress is the maximum stress existing on the steel pipe, the welding seam bears the maximum load when it is in the direction of the vertical stress. That is, the straight seam bears the largest load, the circumferential weld bears the smallest load, and the spiral seam is between the two.

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Advantages of Spiral welded pipe

1. High strength: spiral welded pipe has high strength and can withstand greater pressure and weight, so it is suitable for making heavy support structures such as steel structure pillars.   

2. Corrosion resistance: After surface treatment such as hot dip galvanized, spiral welded pipe can effectively prevent rust and corrosion and extend its service life.  

3. Easy processing: Spiral welded pipe can be easily installed and manufactured by cutting, drilling, welding and other processing methods.  

 4. Low cost: Compared with other advanced steels, spiral welded pipes have a lower cost and are suitable for large-scale production and application. 

The application range of Spiral steel pipe 

1. Spiral steel pipe as a pile steel pipe, without any anti-corrosion processing, can be used directly.  Generally used for bridge piling, highway support, turret advertising column, etc.;  

2. Spiral steel pipe as a fluid transport pipeline, need to do anti-corrosion processing, such as: external epoxy coal asphalt paint, epoxy resin powder, 3pe anti-corrosion, etc.  Generally used for municipal water supply, drainage, sewage treatment projects, ocean water and other transportation steel pipes;  

3. Spiral steel pipe as A gas transmission, gas transmission pipeline requirements are higher, the production standard GB/T9711.1-2008(national standard, also known as the oil and gas industry steel pipe delivery technical conditions Part I: A class steel pipe, the strict requirements of GB/T9711.2-B class steel pipe).  Generally used for gas, steam, liquefied petroleum gas and other transportation pipelines. 

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FAQ

1
Are you a factory or trading company? 
We are a factory.
2
Where is your factory located? How can I visit there? 
We locate in Tianjin, China, 30 minutes from Beijing by train.
3
Can I get some samples? 
Yes, free samples can be provided
4
What do your factory do regarding quality control? 
From material to products, we inspect each process to keep good quality.
5
How about MOQ? 
We have stock of common sizes at hand, so one ton is accepted.
6
How about payment? 
Both T/T and L/C can be accepted.
7
How long does your warranty? 
We can assure the quality within 90 days of receiving the cargo.


Company Features

· Among the most fantastic spiral welded steel pipe manufacturer producers, HengHui Steel stands out in the industry.

· The quality of spiral welded steel pipe manufacturer is highly recommended by customers. Tianjin HengHui Steel Group Co., Ltd. enjoys solid financial and technological strength to make sure the quality of spiral welded steel pipe manufacturer. There is no doubt that spiral welded steel pipe manufacturer has received much reputation for its high quality.

· Winning the spiral welded steel pipe manufacturer market has always been the goal pursued by HengHui Steel. Get an offer!


Product Details

HengHui Steel not only pays attention to the whole, but also focuses on the details of spiral welded steel pipe manufacturer. In this way, we make sure that our products are better reflected in the following details.


Product Comparison

Compared with similar products, HengHui Steel's spiral welded steel pipe manufacturer is more advantageous in the following aspects.


Enterprise Advantages

Our company has a number of highly skilled and experienced professionals. They provide the strength to continuously develop new products and improve existing products.

With the service concept of 'customer first, service first', HengHui Steel constantly improves the service and strive to provide professional, high-quality and comprehensive services for customers.

Looking forward to the future, our company will follow the business philosophy of 'branding, scale, standardization and market'. Our company is positive and aspirant and we focus on independent innovation and cooperation, so as to gain mutual benefits. Moreover, we integrate resource advantages and take market as the guide, brand as the link, science and technology as the support, and efficiency as the core. We adopt the modern enterprise management model to build a well-known brand in the industry. In this way, we can become the leading enterprise in the industry.

Founded in HengHui Steel always adheres to the business concept that business reputation and customer are key points. Keeping pace with the times, we continuously provide quality products and professional services.

Our products are sold all over the country and are well received by users.

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we welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.
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We can do and agent various of products importing and exporting business, our company establish good trade relations with Brazil, India, South Africa, the Middle East and Southeast Asian market and we has build a solid global economic structure, we have won the client's reliance and appreciated by strong production capacity and meticulous customer service.
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Contact Us

Contact Person: Toby

Phone: 0086 187 2258 3666

E-mail: toby@henghuisteel.com

WhatsApp: 0086 185 2672 0784

Add: Daqiuzhuang Industrial Park, Jinghai District, Tianjin

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