Welded Black Carbon Square Tubes Pre-galvanized/ Galvanized ASTM A500 10*10-400*400 Structure Pipe
- Ref Price:
-
- Loading Port:
- Tianjin 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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1. Specification of Hollow Section-Square Tubes
1) Application: Widely used in building, machine, chemical equipment, automobile industrial, container, and also applied to agriculture and mine machine.
2)Standard：ASTM A500, GB6728
3)Steel grade: ASTM A500: A, B, C; GB6728：Q195，Q215，Q235，Q345
4)Delivery Time: 7-20 Days after receving prepayment or L/C
2. Size of Hollow Section-Square Tubes
|
SIZE(mm) |
THICKNESS(mm) |
|
10×10 |
0.6-1.0 |
|
12×12 |
0.6-1.0 |
|
16×16 |
0.6-1.2 |
|
19×19 |
0.6-1.5 |
|
20×20 |
1.6-1.5 |
|
25×25 |
1.0-2.75 |
|
30×30 |
1.0-2.75 |
|
32×32 |
1.0-3.0 |
|
38×38 |
1.0-3.0 |
|
40×40 |
1.0-3.5 |
|
50×50 |
1.0-5.0 |
|
60×60 |
1.0-6.0 |
|
63.5×63.5 |
1.0-6.0 |
|
70×70 |
1.5-6.0 |
|
75×75 |
1.5-6.0 |
|
80×80 |
2.0-6.0 |
|
90×90 |
2.0-6.0 |
|
100×100 |
2.3-6.0 |
|
120×120 |
4.0-6.0 |
|
125×125 |
4.0-6.0 |
|
150×150 |
4.0-8.0 |
|
200×200 |
6.0-12 |
|
250×250 |
6.0-12 |
|
300×300 |
6.0-12 |
|
400×400 |
6.0-12 |
*Remark: Besides below sizes, we also can arrange production based on requirement of customer's requirement
3. Packing&Delivery
Packing Details: Big OD: in bulk; Small OD: packed by steel pipe;Plastic bags 4 or According to customer's requirement
Delivery Time: 20-30 days upon receving prepayment or L/C
4. Data Sheet
ASTM A 500
|
Chemical Requirement | |||||
|
Composition % | |||||
|
Grade A |
Grade B | ||||
|
Element |
Heat analysis |
Product analysis |
Heat analysis |
Product 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 | |||||
|
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 |
5. Products Showroom
- Q: Can steel pipes be used for underground stormwater drainage?
- Indeed, underground stormwater drainage can utilize steel pipes. These pipes possess durability and boast a high strength-to-weight ratio, rendering them appropriate for subterranean usage. They can endure substantial burdens and fend off corrosion, thus guaranteeing sustained effectiveness within stormwater drainage systems. Furthermore, steel pipes lend themselves to easy welding, facilitating customization and flexibility during both design and installation. Nonetheless, it is imperative to implement adequate corrosion protection measures, such as the application of a protective coating or the utilization of corrosion-resistant alloys, to avert degradation over time. Regular maintenance and monitoring are also advisable to uphold the pipes' integrity and ensure optimal stormwater drainage functionality.
- Q: How are steel pipes protected against electrolytic corrosion?
- Various methods can be employed to safeguard steel pipes against electrolytic corrosion. One commonly utilized approach involves the application of protective coatings on the pipe's surface. These coatings serve as a barrier, effectively preventing direct contact between the steel and the surrounding environment, which may contain moisture and other corrosive substances. Epoxy, polyethylene, and zinc are frequently employed coatings for this purpose. Another means of protection involves the utilization of sacrificial anodes. These anodes, typically fabricated from a metal that exhibits greater reactivity than steel, such as zinc or aluminum, are affixed to the steel pipes. Over time, as these anodes corrode, they willingly sacrifice themselves in order to shield the steel. This process, known as cathodic protection, is exceptionally successful in deterring electrolytic corrosion. Aside from coatings and sacrificial anodes, proper insulation and electrical isolation play a pivotal role in preventing electrolytic corrosion of steel pipes. Insulating materials, such as rubber or plastic sleeves, are employed to prevent direct contact between the pipes and other metals or electrolytes. Electrical isolation can be achieved through the use of dielectric unions or insulating flanges, which effectively obstruct the flow of electric current between different sections of the pipeline. Furthermore, regular maintenance and inspection are essential components of protecting steel pipes against electrolytic corrosion. Regular checks to assess coating integrity, anode condition, and potential electrical leakage are crucial in maintaining the ongoing efficacy of the corrosion protection system. In conclusion, a combination of protective coatings, sacrificial anodes, insulation, electrical isolation, and regular maintenance is indispensable in safeguarding steel pipes against electrolytic corrosion. By implementing these measures, the lifespan of steel pipes can be substantially prolonged, thereby ensuring the safety and reliability of various applications, including water distribution, oil and gas transportation, and structural support in buildings and infrastructure.
- Q: How are steel pipes protected during transportation and storage?
- Steel pipes are typically protected during transportation and storage through various measures. These include using protective coatings like oil or paint to prevent corrosion, using proper packaging materials such as plastic caps or wrapping, securing them with straps or bands to prevent movement and damage, and storing them in covered or enclosed areas to shield them from environmental elements like moisture, sunlight, or extreme temperatures.
- Q: How are steel pipes tested for quality assurance?
- Steel pipes are tested for quality assurance through various methods, such as visual inspection, dimensional checks, chemical composition analysis, mechanical property testing, and non-destructive testing techniques like ultrasonic or magnetic particle inspection. These tests ensure that the pipes meet the required specifications, performance standards, and are free from defects or flaws, ensuring their durability and reliability in various applications.
- Q: What are the advantages of using steel pipes in industrial plants?
- There are several advantages of using steel pipes in industrial plants. Firstly, steel pipes are incredibly strong and durable, capable of withstanding high pressures and extreme temperatures, making them suitable for transporting various liquids and gases. Secondly, steel pipes have excellent resistance to corrosion, ensuring a longer lifespan and reduced maintenance costs. Additionally, steel pipes have a smooth interior surface, minimizing frictional resistance and allowing for efficient flow of materials. Lastly, steel pipes are highly versatile, with different sizes and thicknesses available, making them suitable for a wide range of applications in industrial plants.
- Q: Are steel pipes magnetic?
- Yes, steel pipes are typically magnetic because they are made primarily of iron, which is a ferromagnetic material.
- Q: What are the factors to consider when selecting pipe materials for corrosive environments?
- When selecting pipe materials for corrosive environments, there are several important factors to consider in order to ensure the longevity and effectiveness of the piping system. 1. Corrosion Resistance: The most crucial factor to consider is the corrosion resistance of the pipe material. It is essential to choose a material that is highly resistant to corrosion, as corrosive environments can cause significant damage to pipes over time. Materials such as stainless steel, fiberglass, and certain types of plastics like PVC and CPVC are known for their excellent resistance to corrosion. 2. Chemical Compatibility: It is important to assess the chemical compatibility of the pipe material with the specific corrosive environment it will be exposed to. Different materials have different resistance levels to various chemicals, so it is crucial to ensure that the chosen material can withstand the specific chemicals present in the environment. Consulting chemical compatibility charts and seeking expert advice can help in making the right material selection. 3. Temperature and Pressure Requirements: The temperature and pressure conditions within the corrosive environment should also be considered when selecting pipe materials. Some materials may have limitations in terms of their temperature and pressure resistance, and exceeding these limits can lead to pipe failure. It is important to choose a material that can handle the required temperature and pressure ranges without compromising its structural integrity. 4. Cost: The cost of the pipe material and its installation should also be taken into account. While certain materials may be highly resistant to corrosion, they can also be more expensive. It is essential to strike a balance between the desired level of corrosion resistance and the available budget. 5. Maintenance and Durability: The maintenance requirements and overall durability of the pipe material should be evaluated as well. Some materials may require more frequent inspections, cleaning, or repairs compared to others. Considering the anticipated lifespan of the piping system and the ease of maintenance can help in selecting a material that will provide long-term reliability and cost-effectiveness. In conclusion, when selecting pipe materials for corrosive environments, one should consider factors such as corrosion resistance, chemical compatibility, temperature and pressure requirements, cost, and maintenance and durability. By carefully evaluating these factors, one can choose a pipe material that best suits the specific corrosive environment and ensures a reliable and long-lasting piping system.
- Q: What is the difference between steel pipes and fiberglass pipes?
- Steel pipes are made from a durable alloy of iron and carbon, while fiberglass pipes are composed of a reinforced plastic material. The main difference is that steel pipes are stronger and more resistant to high temperatures and pressure, making them suitable for heavy-duty applications such as oil and gas pipelines. On the other hand, fiberglass pipes are lighter, corrosion-resistant, and have better thermal insulation properties, making them ideal for industries like chemical processing and wastewater treatment.
- Q: Can steel pipes be used for high-pressure applications?
- Yes, steel pipes can be used for high-pressure applications. Steel is known for its strength and durability, making it suitable for handling high-pressure fluids or gases in industries such as oil and gas, chemical processing, and power generation. The use of steel pipes ensures reliable performance and reduces the risk of leaks or ruptures even under high pressure conditions.
- Q: What are the different surface finishes available for steel pipes?
- Some common surface finishes available for steel pipes include black or bare (uncoated) finish, galvanized finish, and coated finishes such as epoxy, polyethylene, or polypropylene. These finishes provide varying levels of protection against corrosion and can be chosen based on the specific application and environmental conditions.
The company has successively passed ISO9000 quality system, the American Petroleum Institute API, and also earned the environment healthy license, national special equipment manufacturing license.
1. Manufacturer Overview
| Location | Hebei, China |
| Year Established | 1988 |
| Annual Output Value | Above One Hundred Million RMB |
| Main Markets | Main land; Southeast Asia; Middle East; Africa |
| Company Certifications | ISO 9002:2010；API 5L |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Tianjin |
| Export Percentage | 30%-50% |
| No.of Employees in Trade Department | 201-500 People |
| Language Spoken: | English; Chinese |
| b) Factory Information | |
| Factory Size: | 50,000 square meters |
| No. of Production Lines | Above 15 |
| Contract Manufacturing | Meicai Metal Trading Co.Ltd |
| Product Price Range | Average |
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Welded Black Carbon Square Tubes Pre-galvanized/ Galvanized ASTM A500 10*10-400*400 Structure Pipe
- Ref Price:
-
- Loading Port:
- Tianjin Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- based on order m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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