The elbow fitting SF IT 304L / 1.4307 48.3x2.0 mm EN 10253-4 AW is a fundamental component used in numerous industrial sectors, especially in piping systems for the transport of fluids. This type of fitting is produced with 304L , an austenitic variant that guarantees high resistance to corrosion, thanks to its low percentage of carbon. EN 10253-4 specifies the technical requirements for austenitic and duplex stainless steel fittings intended for fusion welding, ensuring that they are suitable for use under pressure conditions.

Visual description and components:

The SF IT 304L curve fitting is an element characterized by a shiny, smooth and irregularity-free surface, typical of stainless steel. Its curved shape is designed to allow angular deviations in piping without compromising pressure or sealing. Fittings of this type are often used in pipeline networks, especially those subjected to high loads or aggressive conditions. The dimensions of this fitting are precise: it has a diameter of 48.3 mm and a wall thickness of 2.0 mm .

Technical features:

• Material : 304L (1.4307) .
• Dimensions : 48.3 mm external diameter and 2.0 mm wall thickness.
• Regulations : compliant with EN 10253-4 , which regulates stainless steel welded fittings for pressure systems.
• Manufacturing Process : The fitting is manufactured using hot or cold forming processes, with heat treatments to ensure the right microstructure and optimal mechanical properties.
• Corrosion resistance : excellent, thanks to the chemical composition of 304L , which includes chromium and nickel.
• Finish : Stainless steel gives a smooth, abrasion-resistant finish.

Usage procedure:

The SF IT 304L bend fitting is usually used in piping systems where it is necessary to divert the fluid path. Its installation requires fusion welding techniques, as indicated by the EN 10253-4 standard. Soldering must be carried out by qualified personnel, with well-defined parameters to ensure a safe and long-lasting connection.

Matching accessories:

This fitting can be combined with other pipe components such as flanges, joints and gaskets in compatible materials, always in stainless steel or materials with high corrosion resistance. In particular, the choice of accessories depends on the working environment (such as temperature and pressure) and the type of fluid transported.

Mathematical formulas for optimal use:

For the correct use of the SF IT 304L curve fitting in a system, it is essential to calculate the pressure losses caused by deviations in the pipes. One of the most common formulas for estimating pressure drops in a curve is the Darcy-Weisbach :

$$\Delta$$

Where:

• ΔP\Delta P $\Delta P$ $is$ the pressure drop,
• ff $f$ is the friction factor,
• LL $L$ is the equivalent length of the curve,
• DD $D$ is the diameter of the pipe,
• ρ\rho $\rho$ is the density of the fluid,
• vv $v$ is the velocity of the fluid.

Workable materials:

The SF IT 304L bend fitting is suitable for the transport of corrosive fluids, water, steam, oils and chemical substances. Its corrosion resistance allows it to be used in marine environments or with aggressive fluids.

Maintenance and verification of a good used car:

To keep the fitting in good condition, it is important to carry out periodic checks on the welds and on the surface of the fitting, verifying the absence of corrosion or deformations. When considering the purchase of a used fitting, it is advisable to check the structural integrity and compliance with regulations such as EN 10253-4 . A fitting in good condition must show a surface free of deep scratches and well-executed welds.

Sectors of use and advantages of second-hand:

This type of fitting is widely used in the chemical, petrochemical, food and pharmaceutical industries. Purchasing a used fitting like the SF IT 304L can be cost-effective, especially when the machine maintains its structural integrity and performance is guaranteed. Additionally, 304L stainless steel is highly durable, which prolongs the life of the component even when used.