High Quality Hollow Section-Square Tubes
- Ref Price:
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- 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 used in the telecommunications industry?
- Steel pipes are commonly used in the telecommunications industry for various purposes such as underground cable installation, protection of fiber optic cables, and support of communication towers.
- Q:What are the different types of steel pipe joints for underwater applications?
- There are various types of steel pipe joints commonly used for underwater applications, including buttweld joints, socket weld joints, and threaded joints. These joints provide secure connections and maintain the integrity of the pipeline system in underwater environments.
- Q:Are steel pipes resistant to corrosion?
- Yes, steel pipes are generally resistant to corrosion due to the protective layer of oxide that forms on their surface, but their resistance can vary depending on the specific grade of steel and the environment they are exposed to.
- Q:How are steel pipes used in underground drainage systems?
- Steel pipes are commonly used in underground drainage systems to transport wastewater and stormwater away from buildings and infrastructure. These pipes are durable and resistant to corrosion, making them suitable for underground applications. They are typically used for main sewer lines and stormwater drains, providing a reliable and long-lasting solution for effective drainage.
- Q:DN80 seamless steel tube, what is the standard thickness?
- Commonly used DN80 seamless steel pipe caliber should be 89mm*4mm.
- Q:Can steel pipes be used for underground water supply systems?
- Yes, steel pipes can be used for underground water supply systems. Steel pipes are durable, strong, and resistant to corrosion, making them suitable for underground applications. They can withstand high water pressure, provide efficient flow of water, and have a long lifespan. However, it is important to ensure that the steel pipes are properly coated and protected against corrosion to prevent any contamination of the water supply. Additionally, steel pipes are heavier than other materials, which may require additional support during installation. Proper maintenance and regular inspection are also crucial to identify any potential issues and prevent leaks or damage to the underground water supply system.
- Q:Are steel pipes resistant to chemicals?
- Yes, steel pipes are generally resistant to chemicals. They have excellent corrosion resistance properties, making them suitable for transporting various chemicals in industries such as oil and gas, chemical processing, and wastewater treatment. However, the level of resistance can vary depending on the specific type of chemical and the grade of steel used. In some cases, additional protective coatings may be required to enhance chemical resistance.
- Q:What are the safety measures to consider when working with steel pipes?
- When working with steel pipes, it is important to follow specific safety measures to ensure a safe working environment. Some key safety measures to consider include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toed boots to protect against potential injuries. Additionally, workers should be cautious of sharp edges and use tools designed for cutting and handling steel pipes. It is crucial to secure pipes properly to prevent accidents caused by falling or rolling pipes. Lastly, workers should be trained on proper lifting techniques to avoid strain or injury when handling heavy steel pipes.
- Q:Can steel pipes be used for oil and gas transportation?
- Indeed, steel pipes are capable of being employed for the transportation of oil and gas. In the oil and gas sector, steel pipes are extensively utilized owing to their robustness, longevity, and capacity to withstand high-pressure environments. They are frequently employed for the conveyance of crude oil, natural gas, and related substances across extensive distances. Steel pipes exhibit exceptional resistance to corrosion and are capable of enduring extreme temperatures, thus rendering them suitable for both onshore and offshore applications. Moreover, steel pipes can be easily welded, facilitating the construction of intricate pipeline networks that efficiently transport oil and gas from production fields to refineries and distribution centers.
- Q:How are steel pipes used in the construction of power transmission lines?
- Steel pipes are commonly used in the construction of power transmission lines as they provide a strong and durable structure to support the weight of the lines and withstand environmental conditions. These pipes serve as the main support structure for overhead power lines and are often used to elevate the lines above ground level or across bodies of water. Additionally, steel pipes are used to protect and encase underground power cables, ensuring their safety and longevity.
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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