Square rectangular tubes of various standard materials by sell
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 15000 m.t./month
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Specification
1、 Square rectangular tubes of various standard materials by sell
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 of various standard materials by sell
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
• Reasonable price
3、 Square rectangular tubes of various standard materials by sell
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 of various standard materials by sell
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 of various standard materials
- Q: How do you inspect steel pipes for defects?
- The inspection of steel pipes for defects requires a methodical approach that combines visual examination, non-destructive testing (NDT) techniques, and specialized equipment. The following are the typical steps undertaken to inspect steel pipes for defects: 1. Visual Examination: Commence by visually inspecting the external surface of the pipe, searching for any visible indications of defects, including cracks, dents, or corrosion. Particular attention should be given to welds, joints, and areas prone to stress or damage. 2. Ultrasonic Testing (UT): Ultrasonic testing is commonly employed to identify internal defects in steel pipes. This technique involves transmitting ultrasonic waves into the pipe and then interpreting the echoes received. Any irregularities in the internal structure, such as cracks or voids, can be identified and analyzed. 3. Magnetic Particle Inspection (MPI): MPI is a widely utilized technique for detecting defects on or near the surface, such as cracks, seams, or other discontinuities. This method involves applying a magnetic field to the pipe and subsequently applying ferromagnetic particles (usually iron-based) to the surface. These particles accumulate and form visible indications at areas where magnetic flux leakage is caused by defects. 4. Eddy Current Testing (ECT): Eddy current testing is suitable for detecting surface and near-surface defects in conductive materials like steel. This technique involves inducing an alternating current into the pipe and monitoring changes in the electrical currents induced by any present defects. These changes are then analyzed to identify and evaluate the defects. 5. Radiographic Testing (RT): Radiographic testing is conducted by exposing the steel pipe to X-rays or gamma rays and capturing radiographic images of the pipe. This technique allows for the detection of internal defects, such as cracks, porosity, inclusions, or variations in wall thickness. The radiographic images are subsequently examined for any indications of defects. 6. Dye Penetrant Inspection (DPI): DPI is a method used to identify defects on the surface of steel pipes. It involves applying a liquid dye to the surface, which penetrates into any surface cracks or flaws. After sufficient time for the dye to seep in and react, excess dye is removed, and a developer is applied to draw out the dye from the defects, rendering them visible. 7. Pressure Testing: Pressure testing entails pressurizing the steel pipe to a predetermined level and monitoring for any pressure drops or leaks. This test ensures that the pipe can withstand the required pressure without any structural defects. It is worth noting that the choice of inspection technique depends on various factors, such as the type of defect being sought, the size and characteristics of the pipe, and the specific industry standards and regulations. Inspection professionals with expertise in NDT methods and equipment are typically employed to ensure precise and dependable results.
- Q: How are steel pipes used in desalination plants?
- Steel pipes are used in desalination plants to transport water, brine, and chemicals throughout the facility. They are highly durable and corrosion-resistant, making them ideal for handling the high-pressure and corrosive nature of the desalination process. Steel pipes ensure efficient and reliable water distribution, contributing to the overall effectiveness of desalination plants in converting seawater into fresh water.
- Q: How are steel pipes measured and labeled?
- Steel pipes are typically measured and labeled based on their nominal pipe size (NPS), which refers to the inner diameter of the pipe. This measurement is expressed in inches or millimeters. Additionally, steel pipes are often labeled with their schedule or wall thickness, which is represented by a numerical value. The labeling also includes the pipe material, such as carbon steel or stainless steel, and may include other specifications and markings as required by industry standards and regulations.
- Q: Can steel pipes be used for pharmaceutical manufacturing plants?
- Yes, steel pipes can be used for pharmaceutical manufacturing plants. Steel pipes are commonly used in pharmaceutical manufacturing plants for various purposes such as conveying fluids, gases, and chemicals within the facility. They are preferred due to their durability, strength, and resistance to corrosion, making them suitable for maintaining the integrity and purity of pharmaceutical products. Additionally, steel pipes can be easily cleaned and sterilized, meeting the stringent hygiene and safety requirements of pharmaceutical manufacturing.
- Q: Can steel pipes be used for underground pressure pipelines?
- Underground pressure pipelines can indeed utilize steel pipes. Renowned for their robustness and endurance, steel pipes are well-suited for diverse applications, including underground pressure pipelines. They possess the capability to withstand high pressure and exhibit resistance to corrosion, rendering them a dependable choice for subterranean transportation of fluids or gases. Moreover, steel pipes offer versatility in terms of size and thickness, enabling customization to meet the specific requirements of any pipeline undertaking. Nevertheless, it is crucial to ensure adequate coating or lining of the steel pipes to avert corrosion resulting from soil conditions or the conveyed substance. Regular maintenance and inspections are also imperative to guarantee the integrity and longevity of underground pressure pipelines constructed with steel pipes.
- Q: How are steel pipes used in the manufacturing of sewage treatment plants?
- Steel pipes are used in the manufacturing of sewage treatment plants for various purposes, including the transportation of wastewater, the distribution of chemicals and additives, and the construction of various components such as tanks, pumps, and pipelines. Steel pipes are preferred due to their strength, durability, and resistance to corrosion, ensuring reliable and long-lasting infrastructure for the efficient operation of sewage treatment plants.
- Q: How are steel pipes used in firefighting systems?
- Steel pipes are used in firefighting systems to transport water or other fire-suppressing agents from a water source to the location of a fire. These pipes are durable and resistant to heat, making them suitable for carrying large volumes of water at high pressure to extinguish fires effectively. Additionally, steel pipes are often used for underground or overhead fire hydrant systems, sprinkler installations, and standpipe systems in buildings to ensure a reliable and efficient firefighting infrastructure.
- Q: What's the difference between hot-rolled seamless steel tube and cold-rolled seamless steel tube?
- Cold rolled seamless steel pipe (DIAL) in general, steel pipe for low and medium pressure boiler tube, high-pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking tube and other steel tube, including carbon thin-walled steel, alloy thin-walled steel, stainless steel, thin steel tube.
- Q: How are steel pipes used in structural applications?
- Steel pipes are commonly used in structural applications due to their high strength and durability. They are used for various purposes such as supporting structures, transferring loads, and providing stability. Steel pipes can be used as columns, beams, or trusses in buildings, bridges, and other structures. They are also used for underground water and gas pipelines, as well as in industrial and manufacturing facilities. Overall, steel pipes play a crucial role in providing stability and strength to structural applications.
- Q: Can steel pipes be used for oil refineries?
- Yes, steel pipes can be used for oil refineries. Steel pipes are commonly used in oil refineries due to their high strength, durability, and resistance to corrosion. They can handle the high pressure and temperature requirements of the oil refining process, making them suitable for transporting and distributing various petroleum products within the refinery.
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Square rectangular tubes of various standard materials by sell
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 15000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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