Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593
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1、Structure of Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593：
Stainless steel Welded pipe is used in applications that require the pipe to have high anti-corrosive properties. Compared to steel and cast iron pipes, stainless steels are more flexible, durable and have a higher strength. They are very resistant to erosion-corrosion and can be formed and welded into various shapes and sizes. It is easily connected with various other piping systems and materials and is designed to withstand long life cycles.2、Main Features of Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593：
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Good visual effect
•Reasonable price
3、 Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593 images：
4、 Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593 Specification：
Size：
| DN | OD | WT | ||||
| SCH 5S | SCH 10S | SCH 20S | SCH 40S | |||
| (A) | (B) | mm | mm | mm | mm | mm |
| 350 | 14' | 355.6 | 3.96 | 4.78 | 7.92 | 11.13 |
| 400 | 16' | 406.4 | 4.19 | 4.78 | 7.92 | 12.7 |
| 450 | 18' | 457.2 | 4.19 | 4.78 | 7.92 | 14.27 |
| 500 | 20' | 508.0 | 4.78 | 5.54 | 9.53 | 15.09 |
| 550 | 22' | 558.8 | 4.78 | 5.54 | 9.53 | 15.09 |
| 600 | 24' | 609.6 | 5.54 | 6.35 | 9.53 | 17.48 |
| 650 | 26' | 660.4 | 5.54 | 7.92 | 12.7 | 17.48 |
| 700 | 28' | 711.2 | 5.54 | 7.92 | 12.7 | 17.48 |
| 750 | 30' | 762.0 | 6.35 | 7.92 | 12.7 | 17.48 |
| 800 | 32' | 812.8 | 7.90 | 12.7 | 17.48 | |
| 850 | 34 | 863.6 | 7.92 | 12.7 | 17.48 | |
| 900 | 36' | 914.4 | 7.92 | 12.7 | 19.05 | |
| 1000 | 40' | 1016.0 | 9.53 | |||
| OD(mm) | WT(mm) | |||||||||||||
| 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1 | 1.2 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | ||
| 9.5 | ||||||||||||||
| 12 | ||||||||||||||
| 1/2' | 12.7 | |||||||||||||
| 13 | ||||||||||||||
| 14 | ||||||||||||||
| 5/8' | 15.9 | |||||||||||||
| 3/4' | 19.1 | |||||||||||||
| 7/8' | 22.2 | |||||||||||||
| 1' | 25.4 | |||||||||||||
| 1-1/8' | 28.6 | |||||||||||||
| 1-1/4' | 31.8 | |||||||||||||
| 1-1/2' | 38.1 | |||||||||||||
| 40 | ||||||||||||||
| 45 | ||||||||||||||
| 2' | 50.8 | |||||||||||||
| 52 | ||||||||||||||
| 2-1/4' | 57.15 | |||||||||||||
| 2-3/8' | 60.3 | |||||||||||||
| 2-1/2' | 63.5 | |||||||||||||
| 70 | ||||||||||||||
| 3' | 76.2 | |||||||||||||
| 85 | ||||||||||||||
| 3-1/2' | 88.9 | |||||||||||||
| 4' | 101.6 | |||||||||||||
| 4-1/8' | 104.78 | |||||||||||||
| 4-1/4' | 107.95 | |||||||||||||
| 4-1/2' | 114.3 | |||||||||||||
| 5-1/4' | 133.35 | |||||||||||||
| 6-1/4' | 158.75 | |||||||||||||
| 8-5/8' | 219.08 | |||||||||||||
ASTM A249 tolerance：
| OD | WT | Length | |
| ＜25.40mm | ±0.10mm | ±10.00% | OD＜50.8mm +3.0mm -0mm OD≥50.8mm +5.0 -0mm |
| ≥25.4mm~38.1mm | ±0.15mm | ||
| ≥38.1mm~50.8mm | ±0.20mm | ||
| ≥50.8mm~63.5mm | ±0.25mm | ||
| ≥63.5mm~76.2mm | ±0.30mm | ||
| ≥76.2mm~101.6mm | ±0.38mm | ||
| ≥101.6mm~190.5mm | +0.38mm -0.64mm | ||
| ≥190.5mm~228.6mm | +0.38mm -1.14mm | ||
ASTM A269 tolerance：
| OD | WT | Length | |
| ＜38.1mm | ±0.13mm | OD＜12.7mm ±15% OD≥12.7mm ±10% | OD＜38.1mm +3.20mm -0mm OD≥38.1mm +4.80 -0mm |
| ≥38.1mm~88.9mm | ±0.25mm | ||
| ≥88.9mm~139.7mm | ±0.38mm | ||
| ≥139.7mm~203.7mm | ±0.76mm | ||
| ≥203.7mm~304.8mm | ±1.01mm | ||
| ≥304.8mm~355.6mm | ±1.26mm | ||
5、FAQ of Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593：
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.
Any question, pls feel free to contact us !
- Q: Classification, advantages and disadvantages of stainless steel welding
- The arc is produced between the tungsten welding wire and the workpiece, so the protection gas is pure argon and the welding wire is not charged, so it can be sent by hand or by machine. Then it is whether to use direct current or alternating current, depending on the welding material.
- Q: Can stainless steel pipes be passivated?
- Yes, stainless steel pipes can be passivated. Passivation is a chemical process that is used to remove free iron and other contaminants from the surface of stainless steel pipes. This process is important as it helps to enhance the corrosion resistance of the stainless steel and improve its overall performance. Passivation is typically carried out by immersing the stainless steel pipes in an acid solution or applying a chemical solution to the surface. The solution helps to remove any impurities or contaminants from the surface, leaving a clean and corrosion-resistant layer. Passivation is commonly used in industries such as food and beverage, pharmaceuticals, and oil and gas, where stainless steel pipes are extensively used.
- Q: How are stainless steel pipes made?
- Stainless steel pipes are made through a process called stainless steel pipe manufacturing. This process involves several steps to ensure the production of high-quality pipes that are durable, corrosion-resistant, and suitable for various applications. Firstly, the raw material, which is stainless steel, is selected based on its composition and desired properties such as strength, corrosion resistance, and heat resistance. Stainless steel is an alloy made primarily of iron, chromium, and other elements like nickel and molybdenum. Once the stainless steel is obtained, it goes through a melting process in an electric furnace, where the steel is melted at extremely high temperatures. This molten steel is then poured into molds to form billets or ingots, which are solidified and shaped into cylindrical bars. The next step is to heat the billets or ingots in a furnace to a specific temperature range to make them more malleable. This process is called hot rolling, and it involves passing the heated billets through a series of rollers to reduce their diameter and thickness. This continuous rolling process helps to refine the stainless steel's grain structure and improve its mechanical properties. After hot rolling, the stainless steel is annealed, which involves heating the material to a specific temperature and then gradually cooling it. Annealing helps to relieve any internal stresses in the steel caused by the hot rolling process and enhances its ductility and toughness. The annealed stainless steel is then subjected to cold rolling, where it is passed through a series of rollers at room temperature. Cold rolling further reduces the diameter and thickness of the stainless steel, resulting in a smoother surface finish and tighter tolerances. Once the desired dimensions are achieved, the stainless steel undergoes a process called welding or seamless pipe manufacturing, depending on the type of pipe being produced. In the case of welded stainless steel pipes, the cold-rolled stainless steel strip is formed into a cylindrical shape and then welded longitudinally using various welding techniques such as TIG (Tungsten Inert Gas) or MIG (Metal Inert Gas) welding. This welding process ensures the integrity and strength of the pipe. On the other hand, seamless stainless steel pipes are made by piercing a solid cylindrical billet or ingot to form a hollow tube. This is achieved through a process called piercing, where a mandrel is used to create a cavity in the billet. The pierced billet is then elongated and rolled to the desired length and diameter. After the pipes are formed, they undergo various finishing processes such as heat treatment, pickling, passivation, and polishing to enhance their corrosion resistance, remove any surface impurities, and improve their aesthetic appearance. In conclusion, stainless steel pipes are made through a combination of melting, hot rolling, annealing, cold rolling, welding or seamless pipe manufacturing, and various finishing processes. This meticulous production process ensures the production of high-quality stainless steel pipes that meet the required specifications and standards.
- Q: Can stainless steel pipes be magnetized?
- Yes, stainless steel pipes can be magnetized if they contain a sufficient amount of ferromagnetic elements, such as iron, nickel, or cobalt. However, most stainless steel pipes are non-magnetic due to the low iron content in their composition.
- Q: What is the difference between seamless and SAW stainless steel pipes?
- The main difference between seamless and SAW (Submerged Arc Welding) stainless steel pipes is the method of manufacturing. Seamless pipes are formed by piercing a solid billet of steel to create a hollow tube without any welding involved. On the other hand, SAW pipes are made by continuously welding the edges of a steel plate or strip to form a pipe. This welding process can result in a visible seam along the length of the pipe. While both types of pipes offer high corrosion resistance and strength, seamless pipes are generally preferred for applications requiring higher pressure, precise dimensions, and a smoother inner surface, whereas SAW pipes are commonly used for less critical applications where cost and availability are more important factors.
- Q: Can stainless steel pipes be wrapped with tape?
- Stainless steel pipes can indeed be wrapped with tape. However, it is crucial to use the appropriate tape specifically designed for stainless steel. The reason for this is that stainless steel pipes are commonly utilized in industrial and high-temperature settings, and regular tapes may not endure the extreme conditions. Typically, stainless steel pipe tapes are constructed from materials like stainless steel foil or aluminum foil, along with a heat-resistant adhesive, guaranteeing long-lasting durability and resistance to corrosion. These tapes serve a variety of purposes, including insulation, sealing, and protection against abrasion. It is always advisable to consult the manufacturer's guidelines or seek professional advice prior to applying any tape to stainless steel pipes, ensuring correct installation and avoiding any potential issues.
- Q: Can stainless steel pipes withstand high temperatures?
- Yes, stainless steel pipes can withstand high temperatures due to their excellent heat resistance properties.
- Q: What is the difference between seamless and hot-finished stainless steel pipes?
- Seamless and hot-finished stainless steel pipes are both used in various industrial applications, but they have some key differences. The main difference between seamless and hot-finished stainless steel pipes lies in their manufacturing process. Seamless pipes are made by piercing a solid steel billet to form a hollow tube without any seams or joints. This process ensures a consistent wall thickness throughout the pipe and a smooth interior surface. On the other hand, hot-finished pipes are created by heating a solid billet and then rolling it to form a tube shape. This rolling process can result in a seam or weld line along the length of the pipe. Another significant difference between seamless and hot-finished stainless steel pipes is their dimensional accuracy and surface finish. Seamless pipes are known for their high dimensional accuracy and excellent surface finish, making them suitable for applications where a precise fit and smooth flow are critical, such as in the pharmaceutical or food processing industries. Hot-finished pipes, although generally not as precise in terms of dimensions and surface finish, are more cost-effective and widely used in applications where tight tolerances are not required, such as in structural or construction projects. In terms of strength and durability, both seamless and hot-finished stainless steel pipes offer excellent performance. However, seamless pipes tend to have higher strength due to their manufacturing process, as there are no weak points or potential areas of failure like welded seams. This makes seamless pipes preferred in applications that require high pressure or corrosion resistance, such as in oil and gas pipelines or chemical processing plants. In summary, the main differences between seamless and hot-finished stainless steel pipes lie in their manufacturing process, dimensional accuracy, surface finish, and strength. Seamless pipes are produced without any seams or welds, resulting in superior dimensional accuracy and surface finish, making them suitable for precise applications. On the other hand, hot-finished pipes are more cost-effective and widely used in applications where tight tolerances are not crucial. Both types of pipes offer excellent strength and durability, but seamless pipes are generally preferred in high-pressure or corrosive environments.
- Q: What are the dimensions and sizes of stainless steel pipes?
- The dimensions and sizes of stainless steel pipes can vary greatly depending on the specific application and industry requirements. Stainless steel pipes are available in various sizes, ranging from small diameter tubes of a few millimeters to larger pipes with diameters exceeding several feet. The dimensions of stainless steel pipes are typically specified by their outer diameter (OD), wall thickness, and length. The wall thickness can vary based on the intended use and pressure requirements of the pipe. Additionally, stainless steel pipes can be found in different shapes, such as round, square, or rectangular, to suit various installation needs.
- Q: Are stainless steel tubes and galvanized steel tubes the same?
- It's quite different!The stainless steel pipe itself is made of stainless steel, and galvanized steel pipe is coated with zinc on the surface of the carbon steel tube
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Stainless Steel Welded Pipe ASTM A249/A269; GB/T24593
- Ref Price:
-
- Loading Port:
- Ningbo
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 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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