ASME B16 9 Buttweld LR Pipe Elbow Manufacturer

What is the use of Long Radius Elbow?

A Long Radius (LR) Elbow is a type of pipe fitting used to change the direction of flow in a piping system by 45° or 90°, depending on the design. The term “long radius” refers to the curvature of the elbow, which has a radius 1.5 times the pipe diameter (1.5D). This longer bend allows for smoother flow transitions, minimizing turbulence and pressure loss within the system. Long radius elbows are preferred in process and high-pressure piping systems where maintaining steady flow and reducing wear are critical.

Long Radius Elbows are available in seamless, welded, and fabricated forms and are manufactured in compliance with standards such as ASME B16.9, B16.28, and MSS-SP-43. They are produced from various materials including stainless steel, carbon steel, alloy steel, duplex steel, and nickel alloys to suit different fluid types and environmental conditions. The smooth internal finish and precise curvature design help ensure efficient fluid movement while reducing the risk of erosion or corrosion inside the pipeline.

Long Radius Elbows are extensively used in oil & gas, petrochemical, chemical, power generation, water treatment, and shipbuilding industries. They are ideal for applications that require smooth directional changes in fluid flow, such as pump discharge lines, compressor stations, and process piping systems. Because of their low-pressure drop characteristics, LR elbows are preferred in systems transporting gases, slurries, and other high-velocity fluids, ensuring reliable performance, reduced maintenance, and longer service life.

Standard Specification For Buttweld Long Radius Pipe Elbow

Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43

Size : Seamless Elbow ( 1/2″～24″), ERW / Welded / Fabricated Elbow (1/2″～48″)

Type : Seamless / ERW / Welded / Fabricated

Thickness : Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.

Form : 90 Deg Long Radius Elbow, 45 Deg Long Radius Elbow, 180 Deg Long Radius Elbow, 1D Elbow, 3D Elbow, 5D Elbow.

Material & Grades of Buttweld Long Radius Elbow

Stainless Steel Buttweld LR Elbow (Long Radius Elbow) :

ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

Duplex & Super Duplex Steel Buttweld LR Elbow (Long Radius Elbow) :
ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. Werkstoff No. 1.4462

Carbon Steel Buttweld LR Elbow (Long Radius Elbow) :
ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

Low Temperature Carbon Steel LR Elbow (Long Radius Elbow) :
ASTM A420 WPL3, A420 WPL6

Alloy Steel Buttweld LR Elbow (Long Radius Elbow) :
ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Nickel Alloy Buttweld LR Elbow (Long Radius Elbow) :
ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe.

ASME B16.9 Buttweld LR Pipe Elbow Available Types

Buttweld Long Radius Elbow	Butt Weld Long Radius 180 Degree Elbows
Steel Long Radius Elbow	90° Long Radius Elbow
ASME B16.9 180 deg Long Radius Elbow	Schedule 10 45Degree LR Elbow
Stainless Steel 180 Degree LR Elbow Suppliers	SS Long Radius Elbows
ANSI B16.9 45 Degree Buttweld Elbow Dealer	ASME B16.28 Buttweld 180 Degree Elbow Exporter
Welded 3D LR Elbow Stockholder	Seamless 90° Pipe Elbow Distributors
Carbon Steel 5D LR Elbow	High Quality LR Elbow Manufacturer
ASTM A403 Stainless Steel Long Radius Elbows	Duplex Steel 1D Pipe LR Elbow
Super Duplex Steel 45 Deg Elbow	Copper Nickel 90 Deg Long Radius Elbow
High Nickel Alloy Long Radius Elbow	Hastelloy 90° Long Radius Pipe Elbow Stockist
Titanium 180 Degree LR Pipe Elbow	Inconel Butt weld 180 Deg LR Pipe Elbow

Buttweld Long Radius Pipe Elbow Application

Stainless Steel 180° Buttweld Long Radius Elbow uses in Oil and Gas Pipeline
90° Buttweld LR Elbow uses in Chemical Industry
Alloy Steel Long Radius Elbow uses in Plumbing
Buttweld Long Radius Pipe Elbow uses in Heating
LR Buttweld Elbow uses in Water Supply Systems
ANSI B16.9 Buttweld Long Radius Elbow uses in Power Plant
45° Degree Long Radius Elbow uses in General Purpose Applications
Long Radius Elbow uses in Food Processing Industry

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