• Hollow Section Steel Tubes(Hot Rolled/Cold Rolled) System 1
  • Hollow Section Steel Tubes(Hot Rolled/Cold Rolled) System 2
  • Hollow Section Steel Tubes(Hot Rolled/Cold Rolled) System 3
Hollow Section Steel Tubes(Hot Rolled/Cold Rolled)

Hollow Section Steel Tubes(Hot Rolled/Cold Rolled)

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Loading Port:
China Main Port
Payment Terms:
TT or L/C
Min Order Qty:
50MT m.t.
Supply Capability:
based on order m.t./month

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Hollow Section Steel TubesHot Rolled/Cold Rolled

Application of Hollow Section Steel TubesHot Rolled/Cold Rolled

It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.

ASTM A500, GB6728

Steel grade of Hollow Section Steel TubesHot Rolled/Cold Rolled

ASTM A500: A, B, C

GB6728Q195Q215Q235Q345

Size of Hollow Section Steel TubesHot Rolled/Cold Rolled

 *Remark: Besides below sizes, we also can arrange production based on requirement of customers

Sizee(mm)

Thickness(mm)

20×10

0.6-1.0

25×12

0.6-1.0

38×19

0.6-1.5

50×25

0.6-1.5

50×30

1.6-3.0

60×40

1.5-3.5

75×50

1.5-4.0

80×40

1.5-4.0

100×50

2.0-6.0

100×60

2.0-6.0

100×75

2.0-6.0

120×60

3.0-6.0

120×80

3.0-6.0

125×50

3.0-6.0

125×75

3.0-6.0

150×50

3.0-6.0

150×75

3.0-6.0

150×100

4.0-12

160×80

4.0-6.0

175×100

4.0-12

200×100

4.0-12

200×150

4.0-12

250×150

5.0-12

300×200

5.0-12

400×200

5.0-12

Chemical Composition(%)

Chemical Requirement

 

Composition %

Grade A

Grade B

Heat

Product

Heat

Product

Element

analysis

analysis

analysis

analysis

Carbon max

0.26

0.3

0.22

0.26

Manganese max

1.4

1.45

Phosphorus, max

0.035

0.045

0.03

0.04

Sulfur max

0.035

0.045

0.02

0.03

Copper, when copper steel is specified, min

0.20

0.18

0.2

0.18

Where an ellipsis (...)appears in this table, there is no requirement

For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis

Mechanical Properties

Tensile Requirement

 

Grade A

Grade B

Tensile strength, min, psi (Mpa)

48000 (400)

70000 (483)

Yield strength, min, psi (Mpa)

36000 (250)

50000 (345)

Elongation in 2 in. (50.8mm), min, %

23

23

Hollow Section Steel Tubes(Hot Rolled/Cold Rolled)

Hollow Section Steel Tubes(Hot Rolled/Cold Rolled)

 

 

 

 

 

Q:Can steel pipes be used for structural supports?
Yes, steel pipes can be effectively used as structural supports due to their high strength, durability, and ability to withstand heavy loads.
Q:What is the maximum operating temperature for steel pipes?
The maximum operating temperature for steel pipes can vary depending on the grade of steel used, but it is generally around 1000°C (1832°F) for standard carbon steel pipes.
Q:What are the different types of threading on steel pipes?
The different types of threading on steel pipes include tapered threads, straight threads, and buttress threads. Tapered threads are commonly used for pipes that will be screwed into fittings, while straight threads are typically used for pipes that will have a coupling or union attached. Buttress threads are designed for heavy-duty applications and provide increased strength and resistance to axial loads.
Q:What are the different types of supports used for steel pipes in buildings?
There are several different types of supports that are commonly used for steel pipes in buildings. 1. Pipe Hangers: These are specifically designed to support the weight of the pipe and are usually made of metal or plastic material. Pipe hangers are attached to the building structure and hold the pipe in place, preventing it from sagging or moving. 2. Pipe Clamps: These are used to secure the pipe to a wall or other structural element. Pipe clamps typically consist of a metal band that wraps around the pipe and is then secured to the structure with bolts or screws. They provide stability and prevent the pipe from shifting or vibrating. 3. Pipe Shoes: These are support devices that are installed underneath the pipe to distribute the weight evenly and provide additional support. Pipe shoes are typically made of metal or rubber and can be attached to the building structure or embedded in concrete foundations. 4. Pipe Guides: These are used to guide the movement of the pipe and prevent it from shifting or bending excessively. Pipe guides are usually made of metal or plastic and are installed at specific intervals along the length of the pipe. 5. Pipe Rollers: These are used to support horizontal pipes and allow for expansion and contraction due to temperature changes. Pipe rollers are typically made of metal and consist of a series of rollers that the pipe rests on. They allow the pipe to move freely without causing damage to the building structure. It is important to select the appropriate type of support based on the specific requirements of the steel pipe and the building structure. Properly supporting steel pipes in buildings ensures their stability, durability, and overall safety.
Q:Why should the weak electricity be pre buried with galvanized steel pipe?
Galvanized steel is widely used in construction, machinery, coal, chemical industry, railway vehicles, automobile industry, highway, bridge, container, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries.
Q:Can steel pipes be used for offshore applications?
Yes, steel pipes can be used for offshore applications. Steel pipes are commonly used in offshore oil and gas drilling operations, as they have high strength, durability, and resistance to corrosion, which are essential qualities for withstanding harsh marine environments. Additionally, steel pipes can be easily welded and fabricated to meet specific offshore project requirements.
Q:How are steel pipes used in the manufacturing of railways?
Steel pipes are commonly used in the manufacturing of railways for various purposes. They are used for the construction of railway tracks, providing a strong and durable foundation. Steel pipes are also used in the manufacturing of railway bridges and tunnels, ensuring structural integrity and support. Additionally, steel pipes are utilized for the transportation of fluids and gases within the railway system, such as fuel or water.
Q:How are steel pipes used in offshore wind farms?
Steel pipes are used in offshore wind farms for various purposes such as the installation of wind turbine foundations, transmission of electricity, and protection of cables. These pipes provide a strong and durable structure to support the turbines and withstand harsh marine conditions, ensuring the efficient and reliable operation of the wind farm.
Q:How are steel pipes used in water transportation?
Steel pipes are commonly used in water transportation due to their durability and strength. They can be used for various purposes, such as carrying water from a source to a treatment plant, distributing water to different areas, and even for sewage systems. Steel pipes are highly resistant to corrosion and can withstand high pressure, making them ideal for long-distance water transportation.
Q:Is the seamless steel pipe used in the market hot or cold drawn?
Outside diameter 89, most are cold drawn, more than 89 hot rolling.
We mainly produces Square and Rectangular Tubes which using the cold rolling technology and other types of tube including Round Steel Pipes, Welded Steel Pipes, Seamless Steel Pipes, Long Products, Flat Steel Products and so on. Our productivity achieves 500, 000 tons each year. Our company is stronger in financial capital and enough power of technical support. The steel tubes made by the company are strictly according to ISO9001:2000 standard quality management system to ensure the high quality of the products.

1. Manufacturer Overview

Location Tianjin,China
Year Established 2000
Annual Output Value Above Thirty Million RMB
Main Markets China; Europe
Company Certifications ISO9001:2000

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin;Qingdao
Export Percentage 41% - 50%
No.of Employees in Trade Department
Language Spoken: English;Chinese
b)Factory Information  
Factory Size: 53000square meter
No. of Production Lines
Contract Manufacturing OEM Service Offered;Design Service Offered
Product Price Range Low Average

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