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A350 LF2 Weldolet
QS Fitting: A350 LF2 Weldolet
Name: Putian A350 LF2 Weldolet
Material: A350 LF2 Class1
Standard: MSS SP-97
Size: DN300(S-STD) × DN50(S-XS), 12" × 2"
Type: BE
Application: Pipe Branch Connection
Material: A350 LF2 Class1
Standard: MSS SP-97
Size: DN300(S-STD) × DN50(S-XS), 12" × 2"
Type: BE
Application: Pipe Branch Connection
Quantity
This product is an A350 LF2 Weldolet, manufactured from A350 LF2 Class 1 low-temperature forged alloy steel and strictly conforming to MSS SP-97. The specification is DN300 (S-STD) × DN50 (S-XS), i.e., 12"× 2", with a beveled end (BE) design, suitable for welding connections between standard wall thickness (STD) main pipes and extra-strong wall thickness (XS) branch pipes. This A350 LF2 Weldolet possesses excellent impact toughness down to -46°C and is specifically designed to provide a safe, high-strength branch reinforcement solution for petrochemical, natural gas, and low-temperature pipeline systems, effectively reducing stress concentration and extending pipeline service life.
What is a Weldolet?
A Weldolet is a forged fitting used for branch connections in piping systems. It belongs to the"self-reinforcing"type of branch connection and is widely used in demanding piping systems such as petroleum, chemical, natural gas, power generation, and nuclear power. Its core function is to safely and efficiently create a branch outlet without directly cutting a hole in the main pipe and welding on a branch pipe. Instead, it uses an integral reinforced structure. Low-temperature application products represented by the A350 LF2 Weldolet are particularly suitable for branch piping needs in harsh environments.
A Weldolet is a forged fitting used for branch connections in piping systems. It belongs to the"self-reinforcing"type of branch connection and is widely used in demanding piping systems such as petroleum, chemical, natural gas, power generation, and nuclear power. Its core function is to safely and efficiently create a branch outlet without directly cutting a hole in the main pipe and welding on a branch pipe. Instead, it uses an integral reinforced structure. Low-temperature application products represented by the A350 LF2 Weldolet are particularly suitable for branch piping needs in harsh environments.
Structurally, a Weldolet resembles a"saddle"or a"necked nozzle."Its bottom is curved to perfectly match the outer wall of the main pipe, while the upper part is a straight pipe section or beveled end for connecting a branch pipe or directly installing valves or fittings. Compared to the traditional method of cutting a hole directly in the main pipe and welding on a branch pipe, the Weldolet offers three significant advantages:
- Stress Distribution and Reinforcement: The integral forged structure of the branch fitting creates additional metal reinforcement around the opening, effectively dispersing stress in the heat-affected zone of the weld, eliminating the need for separate reinforcement pads. For example, the reinforcement design of the A350 LF2 Weldolet under low-temperature operating conditions is particularly critical.
- Ease of Installation: It utilizes full-penetration groove welds (typically a beveled end - BE), requiring less welding work and being easy to align, making it especially suitable for space-constrained locations.
- Clear Material Traceability/Grading: Weldolets are typically manufactured according to ASME B16.9 or MSS SP-97 standards, with materials matching the main pipe (e.g., A350 LF2 Weldolet for low-temperature systems, A105 for ambient temperature high-pressure applications, etc.), ensuring pressure, temperature, and corrosion resistance performance.
Typical application scenarios include: creating a DN50 branch outlet from a DN300 main pipe, where the A350 LF2 Weldolet is preferred to ensure low-temperature toughness; or achieving connections with different wall thicknesses (e.g., STD main pipe with XS branch pipe) through reducing branch fittings. In short, the Weldolet is an efficient, reliable, and standardized pipeline branch solution, and the A350 LF2 Weldolet is an ideal choice specifically for low-temperature environments.
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