Cast Iron and Galvanized Stainless Steel Pipes - Duplex ASTM A790/ASTM A789 GB/T21832-2008 Welded Pipe
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- Min Order Qty:
- 25 m.t.
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- 5000 m.t./month
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1、Structure of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Description：
Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.
2、Main Features of the Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008：
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
•Reasonable price
3、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Images：
4、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Specification：
composition of duplex stainless pipe（%）
| Steel grade | C≤ | Mn≤ | Si≤ | S≤ | P≤ | Cr | Ni | Mo | Cu≤ | N |
| S32750((SAF2507) 00Cr22Ni7Mo4N | 0.03 | 1.20 | 0.80 | 0.020 | 0.035 | 24.0/ 26.0 | 6.0/ 8.0 | 3.0/ 5.0 | 0.50 | 0.24/ 0.32 |
| S31803（SAF2205） 00Cr22Ni5Mo3N | 0.03 | 2.00 | 1.0 | 0.02 | 0.030 | 21.0/ 23.0 | 4.50/ 6.50 | 2.50/ 3.50 | 0.08/ 0.20 | |
| S31500（3RE60） 00Cr18Ni5Mo3Si2 | 0.03 | 1.2/ 2.00 | 1. 4/ 2.00 | 0.030 | 0.030 | 18.0/ 19.0 | 4.25/ 5.25 | 2.50/ 2.00 | 0.05/ 0.10 |
Mechanical Properties of duplex pipe：
| Steel Grade | Heat Treatment Temperature ℃ | Ab（MPa）≥ | As（MPa）≥ | ∮≥ | brinell | rockwell |
| S32750（SAF2507） 00Cr22Ni5Mo3N | 1025-1125 water | 800 | 550 | 15 | 310 | 32 |
| S31803（SAF2205） 00Cr22Ni5Mo3N | 1020-1100 | 620 | 450 | 25 | 290 | 30.5 |
| S31500（3RE60） 00Cr18Ni5Mo3Si2 | 980-1040 | 630 | 440 | 30 | 290 | 30.5 |
Details：
Outer Diameter | 6mm--159mm | |||||
Thickness | 0.3mm - 3.0mm | |||||
Length | 6m or as customers' request | |||||
Surface | 180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or 800G Mirror finish | |||||
Application | Decoration construction, upholstery, industry instrument | |||||
Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | |||||
5、FAQ of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008：
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:What is the typical wall thickness of stainless steel pipes?
- The typical wall thickness of stainless steel pipes can vary depending on the specific application and industry requirements. However, it is common to find stainless steel pipes with wall thickness ranging from 0.065 inches (1.65 mm) to 0.250 inches (6.35 mm).
- Q:What is the difference between 304J6 and 316J6 stainless steel pipes?
- The composition and properties of 304J6 and 316J6 stainless steel pipes are the main factors that differentiate them. 304J6 stainless steel is a variation of the widely used 304 stainless steel with low carbon content. It consists of approximately 18% chromium and 8% nickel, providing excellent corrosion resistance and durability. This grade finds application in various fields such as food processing, chemical processing, and architecture. On the other hand, 316J6 stainless steel is an austenitic grade known for its superior corrosion resistance compared to 304J6. It contains about 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. The inclusion of molybdenum enhances its ability to withstand pitting and crevice corrosion in chloride environments, making it suitable for marine and coastal applications. Regarding mechanical properties, both grades exhibit satisfactory strength and toughness. However, due to its alloy composition, 316J6 stainless steel typically possesses higher tensile strength and hardness. In terms of price, 316J6 stainless steel pipes generally carry a higher price tag than 304J6 due to the increased cost of molybdenum. Consequently, the choice between the two grades depends on the specific requirements of the intended application and the desired level of corrosion resistance.
- Q:Are stainless steel pipes suitable for pulp and paper mills?
- Absolutely, pulp and paper mills can definitely rely on stainless steel pipes. Stainless steel pipes possess a plethora of advantages that render them perfect for utilization in this particular sector. Firstly, stainless steel is remarkably resistant to corrosion and can endure the harsh chemicals and high temperatures commonly encountered in pulp and paper mills. This corrosion resistance guarantees that these pipes will have a lengthier lifespan, necessitating less maintenance and reducing downtime and costs linked with repairs or replacements. Furthermore, stainless steel pipes are acknowledged for their robustness and durability. They can handle high-pressure circumstances, ensuring a dependable and efficient flow of materials throughout the mill. This is especially crucial in pulp and paper mills where substantial volumes of water, chemicals, and pulp need to be transported. Additionally, stainless steel pipes are hygienic and effortless to clean, rendering them well-suited for applications in the pulp and paper industry that demand meticulous cleanliness standards. The smooth surface of stainless steel pipes also diminishes the likelihood of contamination and guarantees a seamless flow of materials, averting any blockages or clogs that could impede production. To conclude, due to their corrosion resistance, durability, strength, and ease of cleaning, stainless steel pipes are undeniably appropriate for pulp and paper mills. They provide a reliable and efficient solution for transporting materials, thereby facilitating the smooth operation of the mill and minimizing maintenance requirements.
- Q:Are stainless steel pipes suitable for cryogenic applications?
- Yes, stainless steel pipes are suitable for cryogenic applications. Stainless steel has excellent mechanical properties, including high strength and good corrosion resistance, which make it ideal for handling extremely low temperatures. Additionally, stainless steel has low thermal conductivity, which helps to minimize heat transfer and maintain the desired cryogenic temperatures.
- Q:What is stainless steel decorative tube? What uses does it have?
- For the steel to withstand the pressure to the hydraulic test to test its ability and quality, leakage, soaked or expansion for qualified does not occur at the prescribed pressure, some steel according to the requirement of standard or edge test, flaring test and flattening test.Seamless stainless steel tube, also called stainless steel seamless pipe, is made of ingot or solid tube blank by piercing, and then made by hot rolling, cold rolling or cold casting. Specifications for seamless steel tubes are expressed in millimeters of outer diameter * wall thickness.
- Q:How do you calculate the flow rate of stainless steel pipes?
- The flow rate of stainless steel pipes can be calculated using the formula: Q = A × V, where Q represents the flow rate, A is the cross-sectional area of the pipe, and V is the velocity of the fluid flowing through the pipe.
- Q:Are stainless steel pipes suitable for pharmaceutical factories?
- Yes, stainless steel pipes are suitable for pharmaceutical factories. Stainless steel is known for its corrosion resistance, durability, and hygienic properties, making it a preferred material for pharmaceutical applications. It is easy to clean, maintains product purity, and can withstand high-pressure and high-temperature conditions often found in pharmaceutical processes. Additionally, stainless steel pipes comply with industry regulations and standards, ensuring the safety and quality of pharmaceutical products.
- Q:Are stainless steel pipes suitable for oil and gas applications?
- Yes, stainless steel pipes are suitable for oil and gas applications. Stainless steel is highly resistant to corrosion, making it ideal for transporting and storing oil and gas, which often contain corrosive elements. Stainless steel pipes also have high strength and durability, ensuring they can withstand high-pressure conditions and harsh environments. Additionally, stainless steel is easy to clean and maintain, reducing the risk of contamination in oil and gas operations. Overall, stainless steel pipes are a reliable and cost-effective choice for oil and gas applications.
- Q:Can stainless steel pipes be used for hygienic applications?
- Indeed, hygienic applications can utilize stainless steel pipes. In industries such as food and beverage, pharmaceuticals, and biotechnology, where cleanliness is paramount, stainless steel is a highly durable and corrosion-resistant material commonly employed. The smooth surface of stainless steel pipes hinders the growth of bacteria and other microorganisms, making them an appropriate choice for applications that require cleanliness. Furthermore, their smooth surface facilitates easy and thorough cleaning, thereby minimizing the risk of contamination. Furthermore, stainless steel pipes do not react with substances and do not release any harmful materials into the products being transported. This characteristic makes them particularly suitable for applications that demand sanitary conditions, such as in the production and transportation of food, beverages, and pharmaceuticals. Additionally, stainless steel pipes exhibit exceptional resistance to high temperatures, chemicals, and corrosion, thereby guaranteeing the integrity of the system and preventing any contamination or leaks. They are also highly durable and can withstand harsh operating conditions, making them a dependable option for hygienic applications. To summarize, stainless steel pipes possess the necessary attributes, including durability, corrosion resistance, smooth surface, ease of cleaning, and non-reactivity, to cater to hygienic applications. They offer a reliable and sanitary solution for industries that prioritize hygiene.
- Q:How do stainless steel pipes compare to polyethylene pipes?
- Stainless steel pipes have higher durability and strength compared to polyethylene pipes. They are resistant to corrosion, heat, and pressure, making them suitable for diverse applications in industries such as oil and gas, construction, and water treatment. On the other hand, polyethylene pipes are more flexible, lightweight, and cost-effective, making them ideal for underground water and gas distribution systems. The choice between stainless steel and polyethylene pipes depends on factors like the specific application, budget, and environmental conditions.
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Cast Iron and Galvanized Stainless Steel Pipes - Duplex ASTM A790/ASTM A789 GB/T21832-2008 Welded Pipe
- Ref Price:
-
- Loading Port:
- Ningbo
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 5000 m.t./month
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