Square rectangular tubes for buildings
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 15000 m.t./month
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Specification
1、 Square rectangular tubes for buildings
Square tube, square tube is a kind of call and rectangular tube, is equal and not equal to the length of steel pipe. Is the strip through the process of processing roll system. In general is the strip through the demolition of the package, flat, curly, welded to form a circular tube, and then rolled into a square tube and then cut into a square tube and then cut into the required length.
2、 Square rectangular tubes for buildings
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
• Reasonable price
3、 Square rectangular tubes for buildings
Standard | GB, DIN, ASTM |
Grade | 10#-45#, 16Mn 10#, 20#, 45#, 16Mn |
Thickness | 1.5 - 25 mm |
Section Shape | Square and rectangular |
Outer Diameter | 20*20 mm-------400*400mm 20*30mm*300*500mm |
Place of Origin | Tianjin, China (Mainland) |
Length | 3-12M |
Outer Diameter | 20*20 mm-------400*400mm 20*30mm*300*500mm |
Grade | 235B 345B |
Standard | ASME, ASTM |
1) Material:(ASTM A 106/A53 GRB.API5LGRB,GB,235B,345B
2) Specification range:OD: 20*30mm----300*500mm 20*20 mm---400*400mm ,WT: 1.5 - 25 mm ,length:3-12m or according to the requirement of clients.
3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut ,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing.
4、Packaging & Delivery
Packaging Details: | seaworthy package,bundles wrapped with strong steel strip |
Delivery Detail: | 15-30days after received 30%TT |
5、 Square rectangular tubes for buildings
①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test
on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.
②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.
③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
6、 Square rectangular tubes for buildings
- Q: Which is more load-bearing, the same thickness of steel pipe and steel bar?
- The magnitude of the axial force acting on the steel member is only related to three factors, namely, the strength of the material, the sectional area of A and the longitudinal stability factor of F.
- Q: How are steel pipes graded?
- Steel pipes are graded based on several factors to determine their quality and suitability for specific applications. The grading system for steel pipes typically includes parameters such as the chemical composition, mechanical properties, manufacturing method, and testing standards. 1. Chemical composition: Steel pipes are graded based on the elements present in their composition. This includes the amount of carbon, manganese, phosphorus, sulfur, and other alloying elements. The chemical composition greatly influences the pipe's strength, corrosion resistance, and other properties. 2. Mechanical properties: The mechanical properties of steel pipes are crucial for determining their strength, flexibility, and resistance to pressure and temperature. These properties include tensile strength, yield strength, elongation, hardness, and impact toughness. Pipes with higher mechanical properties are generally graded higher. 3. Manufacturing method: Steel pipes can be manufactured using various methods, such as seamless, welded, or ERW (Electric Resistance Welding). The manufacturing method affects the pipe's integrity, dimensional accuracy, and overall quality. Seamless pipes, for example, are considered to have higher quality due to their uniformity and absence of weld seams. 4. Testing standards: Steel pipes are graded based on their adherence to specific testing standards. These standards ensure that the pipes meet the required quality criteria and are suitable for their intended applications. Common testing standards include ASTM (American Society for Testing and Materials), API (American Petroleum Institute), and EN (European Norms). Based on these factors, steel pipes are often graded using alphanumeric codes or specifications. For instance, pipes used in oil and gas industry may be graded as API 5L (American Petroleum Institute) or pipes used for structural purposes may be graded as ASTM A500 (American Society for Testing and Materials). In conclusion, steel pipes are graded based on their chemical composition, mechanical properties, manufacturing method, and adherence to testing standards. These grades help customers and manufacturers in selecting the appropriate pipes for specific applications, ensuring safety, durability, and efficiency in various industries.
- Q: How are steel pipes used in the construction of chemical plants?
- Steel pipes are widely used in the construction of chemical plants due to their durability, corrosion resistance, and ability to handle high pressure and temperature. These pipes are primarily utilized for transporting various chemicals, gases, and liquids within the plant, ensuring a safe and efficient flow of materials throughout the facility. They are commonly employed in the installation of process pipelines, utility systems, and structural supports, playing a crucial role in the overall functionality and reliability of chemical plants.
- Q: How are steel pipes used in the oil and gas industry?
- Steel pipes are widely used in the oil and gas industry for various purposes. They are primarily used for transporting and distributing oil and gas from extraction sites to refineries and end consumers. Steel pipes are also used in drilling operations, where they are utilized as casing and tubing to extract oil and gas from wells. Additionally, steel pipes are employed in the construction of storage tanks, pipelines, and other infrastructure required for the production, processing, and transportation of oil and gas. Overall, steel pipes play a crucial role in ensuring the efficient and safe operation of the oil and gas industry.
- Q: What is the difference between ERW and SAW steel pipes?
- ERW (Electric Resistance Welded) steel pipes are manufactured by welding the edges of the steel strip or coil together to form a pipe. On the other hand, SAW (Submerged Arc Welded) steel pipes are manufactured by welding the steel plates or coils together using a submerged arc welding process. The main difference between the two is the method of welding used. SAW pipes generally have a higher strength and better dimensional accuracy compared to ERW pipes.
- Q: How can galvanized steel tubes be painted on the surface?
- Suitable for galvanized base material (antirust primer), epoxy zinc yellow primer (double component), epoxy ester zinc yellow primer.Pretreatment of galvanized sheet when brushing:1, conditional, you can zinc plating phosphating treatment, or first spray a layer of phosphating primer.2, or smooth zinc plating surface sweeping treatment.3, the galvanized workpiece, galvanized pipe surface with solvent (that is, epoxy zinc yellow primer, thinner) wipe, in order to remove the workpiece crude oil protective layer, and increase cleanliness.4, two-component epoxy zinc yellow primer: in strict accordance with the proportion of paint and curing agent paint, and aging 30 minutes later, modulation suitable construction viscosity, you can spray.One component epoxy ester primer: zinc yellow construction viscosity suitable to construction of modulation, the correct construction method.
- Q: How do steel pipes handle water hammer in high-rise buildings?
- Steel pipes in high-rise buildings are designed to handle water hammer through various measures. Firstly, steel pipes have high strength and durability, allowing them to withstand the sudden pressure surges caused by water hammer. Additionally, steel pipes are often installed with shock absorbers or surge tanks to reduce the impact of water hammer. These devices absorb and dissipate the excess energy generated during water hammer, preventing damage to the pipes and fittings. Moreover, proper pipe sizing, layout, and support systems are implemented to minimize the effects of water hammer, ensuring the smooth and efficient flow of water in high-rise buildings.
- Q: What's the difference between seamless steel pipe and welded pipe?
- The difference can be seen from the outward appearance that the welded pipe is welded by roll up.
- Q: Can steel pipes be used for underground utility lines?
- Yes, steel pipes can be used for underground utility lines. Steel pipes are known for their durability and strength, making them suitable for underground applications. They can withstand heavy loads, pressure, and corrosion, which are essential factors for utility lines that are buried underground. Additionally, steel pipes can be welded or threaded together, allowing for easy installation and maintenance.
- Q: Are steel pipes suitable for food processing facilities?
- Yes, steel pipes are suitable for food processing facilities. Steel pipes are widely used in the food processing industry due to their numerous benefits. Firstly, steel pipes are highly durable and can withstand high temperatures, pressures, and corrosive substances often used in food processing. This ensures the pipes will not degrade or contaminate the food products. Additionally, steel pipes are easy to clean and maintain, making them ideal for maintaining high levels of hygiene required in food processing facilities. Steel pipes also have excellent resistance to bacteria growth, further ensuring the safety and quality of the food being processed. Furthermore, steel pipes are cost-effective and have a long lifespan, making them a reliable and economical choice for food processing facilities. Overall, steel pipes are a suitable and preferred option for food processing facilities due to their durability, cleanliness, and resistance to contamination.
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Square rectangular tubes for buildings
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 15000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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