Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled）
- Ref Price:
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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-Rectangle Tubes（Hot Rolled/Cold Rolled）
Application of Hollow Section-Rectangle Tubes（Hot 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-Rectangle Tubes（Hot Rolled/Cold Rolled)
ASTM A500: A, B, C
GB6728：Q195，Q215，Q235，Q345
Size of Hollow Section-Rectangle Tubes（Hot 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 |
- Q: What is the outer diameter and wall thickness of the welded steel pipe of national standard DN250?
- DN250 is the nominal diameter, the outer diameter of the steel pipe is 273mm, the thickness is above 6.5mm.
- Q: Which is more load-bearing, the same thickness of steel pipe and steel bar?
- The same length, the same pipe diameter, the same material strength is hollow, the ratio of area of steel (solid), and the cyclical and slender radius smaller than the larger, so the longitudinal stability coefficient is smaller, three factors, two factors are weak in steel reinforced, another factor: strength, they are the same, no doubt, steel reinforced bearing less than.
- Q: How much is 4 inches steel tube MM?
- Seamless root weight per meter: 1 mm (diameter - thickness) * wall thickness of *0.02466*1 meters is? Normal KG/M pipe length 8-11rice
- Q: How to calculate the maximum bending stress of steel pipe? Is there a list of the maximum flexural normal stresses for steel pipes of different materials and diameters?
- Wnx - net sectional modulus of steel tubes, also called net sectional resistance moment. If the section is not weakened, it can be found in the steel sheet of the steel structure design manual. If the section is weakened, it can be calculated by the formula according to the sectional dimension according to the formula of the material mechanics.
- Q: Can steel pipes be used for underground sewerage systems?
- Yes, steel pipes can be used for underground sewerage systems. Steel pipes are commonly used in underground sewerage systems due to their durability, strength, and resistance to corrosion. They can withstand the weight of the soil and provide a long-lasting solution for transporting wastewater underground. Additionally, steel pipes are often preferred for larger diameter sewerage systems where high strength and structural integrity are crucial.
- Q: Can steel pipes be used for underground drainage?
- Yes, steel pipes can be used for underground drainage. Steel pipes are commonly used for drainage systems due to their durability, strength, and resistance to corrosion. They are able to withstand heavy loads and can be installed in various soil conditions. However, it is important to ensure proper coating and maintenance to prevent rusting and deterioration over time.
- Q: What are the different types of steel pipe coatings for offshore applications?
- There are several types of steel pipe coatings commonly used for offshore applications. These include fusion-bonded epoxy (FBE) coatings, three-layer polyethylene (3LPE) coatings, three-layer polypropylene (3LPP) coatings, and concrete weight coatings. Each of these coatings offer different levels of protection against corrosion and abrasion in offshore environments, and the choice of coating depends on factors such as the specific offshore application, the surrounding environment, and the durability requirements.
- Q: What is the role of steel pipes in the construction of bridges?
- The role of steel pipes in the construction of bridges is primarily to provide structural support and stability. Steel pipes are commonly used in bridge construction to form the framework and support the weight of the bridge deck and other components. They are also used to carry various utilities such as water, gas, and electricity across the bridge. Additionally, steel pipes are durable, resistant to corrosion, and have high strength-to-weight ratio, making them an ideal choice for constructing bridges that can withstand heavy loads and harsh environmental conditions.
- Q: What are the different types of steel pipe nipples?
- There are several different types of steel pipe nipples that are commonly used in various applications. These types include seamless, welded, threaded, and grooved steel pipe nipples. 1. Seamless steel pipe nipples: Seamless nipples are manufactured from a solid piece of steel without any seams or joints. This type of nipple is often preferred for high-pressure or critical applications due to its superior strength and reliability. Seamless nipples can be threaded or plain-ended, depending on the specific requirements. 2. Welded steel pipe nipples: Welded nipples are made by joining two or more pieces of steel together through welding. This type of nipple is commonly used in non-critical applications where high pressure is not a concern. Welded nipples are available in both threaded and plain-ended options. 3. Threaded steel pipe nipples: Threaded nipples have external threads at one or both ends, allowing them to be easily connected to other threaded fittings or pipes. These nipples are commonly used in plumbing, water supply systems, and other applications where a secure and leak-free connection is essential. Threaded nipples are available in various lengths and diameters to accommodate different requirements. 4. Grooved steel pipe nipples: Grooved nipples have a groove or indentation around the circumference of the nipple, which allows for easy installation using grooved couplings. This type of nipple is commonly used in fire protection systems, HVAC systems, and other applications where quick and efficient installation is necessary. Grooved nipples are available in various sizes and configurations to suit different piping systems. In summary, the different types of steel pipe nipples include seamless, welded, threaded, and grooved nipples. Each type has its own advantages and is suitable for specific applications. It is important to consider the specific requirements and conditions of the project before selecting the appropriate type of steel pipe nipple.
- Q: What are the common grades of steel used in pipes?
- The common grades of steel used in pipes include carbon steel, stainless steel, and alloy steel.
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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Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled）
- Ref Price:
-
- 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
OKorder Service Pledge
OKorder Financial Service
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