ASTM A 358 GR. TP 347 EFW welded pipe is a type of stainless steel pipe known for its high resistance to corrosion and high temperature. It is commonly used in petrochemical, gas, oil, and chemical refineries due to its durability and strength. ASTM A 358 GR. TP 347 EFW Welded Pipe comes in various types. One type is the ASTM A 358 GR. TP 347L EFW welded pipe. This type is composed of a lower carbon content material than TP 347. Its composition includes 0.03% carbon, 18% chromium, and 10% nickel. It is ideal for use in environments with high temperatures and stresses. It is known for its exceptional corrosion resistance and strength.
Another type is the ASTM A 358 GR. TP 347H EFW Welded Pipe. It has a higher amount of carbon, normally between 0.04%-0.1%. Its composition includes 18% chromium, 10% nickel, and 0.75% molybdenum. This type of pipe can be hardened through heat treatment, improving its strength and wear resistance. It is often used in industries that require high-temperature stability and low-temperature toughness.
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The 347H CL.1 EFW Welded Pipe has various uses and applications across different industries. One of its primary applications is in the petrochemical industry, which is used to transport petrochemical products such as crude oil and natural gas. It is also commonly used in the oil and gas industry due to its high temperature and high-pressure resistance. Additionally, it is used for heat exchangers, boilers, and other high-temperature equipment.
There are several benefits associated with using ASTM A 358 GR. TP 347 EFW welded pipe. One of the benefits is its high-temperature resistance which makes it ideal for use in high-temperature environments. It also has excellent corrosion resistance, which helps to protect it from degradation caused by corrosive substances. Another benefit is its strength and durability, making it a reliable option for transporting fluids under high pressure.
ASTM A 358 GR. TP 347 EFW welded pipe is easy to fabricate, weld, and install. It is also cost-effective and readily available. Its durability and high corrosion resistance can help extend the pipe's lifespan, thereby reducing maintenance and replacement costs. Furthermore, this type of pipe has a smooth surface finish that helps to minimize frictional losses and improve fluid flow.
ASTM A 358 GR. TP 347 EFW welded pipe is an excellent option for industries that require high-temperature and high-pressure resistance and excellent corrosion resistance. Its various types provide different options for different application needs. Its benefits include ease of fabrication and installation, affordability, durability, and high corrosion resistance.
The minimum tensile strength of TP347 CL.1 EFW Pipes is 75 ksi (515 MPa) and the minimum yield strength is 30 ksi (205 MPa).
ASTM A358 TP347 CL.1 EFW pipes are made of stabilized austenitic stainless steel grade 347 with a maximum carbon content of 0.08%. ASTM A358 TP347H CL.1 EFW pipes are made of the same grade with a higher carbon content of 0.04-0.10% for improved high-temperature strength.
The size range of TP347 CL.1 and TP347H CL.1 EFW pipes is from 8 inches (203.2 mm) to 120 inches (3048 mm) in outer diameter (OD), with wall thickness ranging from 0.165 inches (4.19 mm) to 0.875 inches (22.23 mm).
STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347H | - | X6CrNiNb18-12 |
Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 20.00 | 10xC – 1.10 | 9.00 - 13.00 | 62.74 min |
SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation/td> |
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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