About 90 Deg Buttweld Steel Elbow - China

What Exactly is a 90-Degree Buttweld Elbow?

A 90-degree buttweld elbow is a pipe fitting engineered to connect two pipes of the same nominal diameter at a right angle, facilitating a 90-degree change in the direction of the fluid or gas.

The term “buttweld” refers to the method of connection; the ends of the elbow are beveled to be welded directly onto the ends of the pipes.

This welding process creates a strong, continuous, and leak-proof connection that becomes an integral part of the pipeline itself.

These 90-degree pipe elbow fittings are manufactured from a variety of materials to suit different applications and environmental conditions.

Common materials include carbon steel (like ASTM A234 WPB), stainless steel (such as ASTM A403 for corrosion resistance), and alloy steel for high-temperature or high-pressure service.

Key Features and Specifications

When selecting a 90-degree buttweld elbow, several specifications are critical to ensure compatibility and performance:

Material Composition: The choice of material depends on the fluid being transported, temperature, and pressure.

Carbon, stainless, and alloy steels are the most common choices in industrial settings.

Size and Dimensions: Elbows are available in a wide range of sizes, typically from 1/2 inch to 48 inches (NPS), to match standard pipe diameters.

Their dimensions and tolerances are governed by standards like ASME B16.9.

Wall Thickness: The elbow’s wall thickness, or schedule, must match the connecting pipe to maintain consistent pressure ratings and flow dynamics throughout the system.

Connection Type: The defining feature is the beveled end, which is specifically prepared for butt welding, ensuring a strong and smooth joint.

Types of 90-Degree Elbows: Long Radius (LR) vs.

Short Radius (SR)

90-degree buttweld elbows are primarily available in two standard types, distinguished by their radius of curvature:

Long Radius (LR) 90-Degree Elbow: The LR elbow has a centerline radius that is 1.5 times the nominal pipe size (NPS) of the pipe.

This larger radius creates a gentler turn, which minimizes pressure drop, reduces turbulence, and results in less flow resistance.

LR elbows are the standard choice for most applications, especially in high-pressure and high-flow-rate pipelines.

Short Radius (SR) 90-Degree Elbow: The SR elbow features a centerline radius equal to the pipe’s nominal pipe size (NPS).

The sharper turn makes SR elbows ideal for use in tight or congested areas where space is limited.

However, this compact design results in a higher pressure drop and increased flow resistance compared to its LR counterpart.

Company Contact:

• Posted By: HEBEI JINSHENG PIPE FITTING MANUFACTURING CO., LTD,

• Phone: 86-18032153916

• Address: Wuliyao Industry Zone, Yanshan County, , Cangzhou , Hebei , China

• Email:

• Website: https://jsfittings.com/

• Business Description: We are committed to providing quality products and services at competitive prices, including but not limited to steel pipe flange,buttweld elbow,butt weld tee,pipe Reducers and steel pipe .
  
  We have earned ISO9001: 2015, CE, GOST-R, and passed Pressure Equipment Directive (PED) certification.
  
  All this comes with exemplary customer service and a comprehensive warranty that guarantees your satisfaction.