High Quality Hollow Section-Square Tubes
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 1000 m.t./month
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High Quality Hollow Section-Square Tubes
Product Applications:
It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.
Product Specifications:
Standards: ASTM A500, GB6728
Grade: ASTM A500: A, B, C; GB6728: Q195, Q215, Q235, Q345
Sizes:
*Remark: Besides below sizes, we also can arrange production based on requirement of customers
Size (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 | 0.2 | 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 |
GB6728:
Steel Grade | CHEMICAL COMPOSITION | MECHANICAL PROPERTIES | ||||||
C (%) | Si (%) | Mn (%) | P (%) Max | S (%) Max | YS (Mpa) Min | TS (Mpa) Min | El (%) Min | |
Q195 | 0.06-0.012 | 0.3 | 0.25-0.5 | 0.45 | 0.5 | 195 | 315 | 22 |
Q215 | 0.09-0.15 | 0.3 | 0.25-0.55 | 0.45 | 0.5 | 215 | 335 | 22 |
Q235 | 0.12-0.22 | 0.3 | 0.3-0.7 | 0.45 | 0.45 | 235 | 375 | 20 |
Q345 | 0.20 | 0.55 | 1.0-1.6 | 0.45 | 0.45 | 345 | 510 | 21 |
Packaging: Packed in bundles, each bundle with 6-8 steel stripes and 2 nylon strips or one by one Or Nested into Containers
Product Images:
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
Q6: What is the difference between galvanized steel and galvalume steel?
A6: Galvanized steel is metallic coated with Zinc in various coating weights. Minimum recommended for painted metal roofs is G90. Galvalume is a zinc and aluminum coated steel that becomes an alloy and is recommended in either painted or bare applications with a minimum coating weight of AZ50. Galvalume has an excellent performance life in bare exposures. Hence if you are using a bare panel use galvalume and if painted use either.
Q7: Is there a difference in thermal conductivity between stainless steel and steel?
A6: Yes. Stainless Steel has a lower thermal conductivity rate than steel; approximately 1/3 to 1/5th depending on the material.
Q8: Is there a difference in electrical conductivity between stainless steel and steel?
A8: Yes. Steel is generally more conductive than stainless steel. Steel has resistivity in the range of 10~20Ωm, while stainless has a resistivity of approximately 60~72Ωm.
- Q: How are steel pipes threaded for easy installation?
- The process of threading steel pipes enables convenient installation by creating grooves or ridges in the pipe, forming a spiral pattern that facilitates connection with other threaded components like fittings or valves. There are two commonly employed methods for threading steel pipes: manual threading and machine threading. Manual threading involves the utilization of a handheld tool called a pipe die. This die, equipped with sharp teeth, cuts into the pipe while it is rotated. The pipe is secured in a vise or held firmly by hand, and the die is applied to the pipe's end. As the die rotates around the pipe, threaded grooves are formed. Executing this process necessitates skill and precision to ensure accurate and properly aligned threads. In contrast, machine threading is a more automated procedure. It utilizes a pipe threading machine, which possesses a die head that automatically cuts the threads into the pipe. The machine holds the pipe securely and rotates it while the die head moves along the pipe's length, creating the threads. Machine threading is faster and more efficient than manual threading, making it ideal for large-scale production or projects. Regardless of the chosen method, it is imperative to ensure that the threads are clean and devoid of debris or burrs. This is crucial for effortless installation and to prevent leaks or other complications. Following threading, the pipes are generally inspected to ensure compliance with the required specifications. Threading steel pipes allows for uncomplicated installation as the threaded ends can be readily screwed into fittings, valves, or other pipes possessing compatible threads. This threaded connection creates a tight seal, rendering it suitable for various applications such as plumbing, gas lines, or industrial piping systems.
- Q: Can steel pipes be used for oil and gas pipelines?
- Yes, steel pipes can be used for oil and gas pipelines. Steel pipes are widely used for their strength, durability, and resistance to corrosion, making them a suitable choice for transporting oil and gas over long distances.
- Q: How are steel pipes used in the construction of industrial facilities?
- Steel pipes are commonly used in the construction of industrial facilities for various purposes such as transporting fluids, gases, and steam, as well as providing structural support and carrying electrical wiring. They are durable, resistant to corrosion, and can withstand high pressure and temperature, making them ideal for industrial settings.
- Q: How are steel pipes used in industrial manufacturing processes?
- Steel pipes are commonly used in industrial manufacturing processes for various purposes, such as transporting fluids, gases, and solids, as well as providing structural support. They are used to create pipelines for water, oil, and gas transportation, as well as for conveying materials like ores and grains. Additionally, steel pipes are utilized in machinery, equipment, and infrastructure construction due to their strength, durability, and resistance to high pressure and extreme temperatures.
- Q: How are steel pipes used in wastewater treatment plants?
- Steel pipes are used in wastewater treatment plants for various purposes such as transporting wastewater, carrying chemicals and additives, and supporting the infrastructure.
- Q: How to distinguish seamless pipe and welded pipe?
- The way to distinguish seamless pipes and welded pipes is to see if there is weld marks on the port.
- Q: Are steel pipes resistant to earthquakes?
- Compared to other materials like concrete or PVC pipes, steel pipes are commonly regarded as more resistant to earthquakes. This is because steel possesses inherent properties such as high tensile strength and flexibility. These properties enable steel pipes to effectively absorb and distribute seismic energy during an earthquake, enabling them to endure shaking and ground movements more effectively. Moreover, steel pipes have the capability to deform without rupturing or collapsing, reducing the risk of structural failure. However, it is crucial to note that the earthquake resistance of steel pipes ultimately relies on various factors including the design, installation, and overall structural integrity of the piping system. To ensure the highest level of earthquake resistance for steel pipes, it is imperative to adhere to proper engineering and construction practices.
- Q: Are steel pipes suitable for transporting chemicals?
- Yes, steel pipes are suitable for transporting chemicals. They are known for their durability, corrosion resistance, and high strength, which makes them ideal for carrying various chemicals safely and efficiently. Additionally, steel pipes can withstand high pressure and extreme temperatures, making them a reliable choice for transporting chemicals in industries such as oil and gas, petrochemicals, and manufacturing.
- Q: What is the fire rating of steel pipes?
- The fire rating of steel pipes can vary depending on factors such as the thickness of the pipe, the type of insulation or fireproofing materials used, and the specific application or building codes. However, steel pipes are generally considered to have good fire resistance properties due to their non-combustible nature and ability to withstand high temperatures.
- Q: Are galvanized steel tubes the same as degaussing steel tubes?
- Also known as galvanized steel pipe, hot galvanized and galvanized two kinds, hot galvanized, zinc coating thickness, with uniform coating, adhesion, and long service life. The cost of galvanizing is low, the surface is not very smooth, and the corrosion resistance of itself is much worse than that of galvanized pipe.
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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High Quality Hollow Section-Square Tubes
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 1000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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