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Product ID: 455


90 DEG 1.5D LR BW ELBOW/ASME B 16.9 (Buttweld Fittings), Sizes 4 x SCH STD, in ASTM A234 WP91 (Alloy Steel)
65.8 $

Western Origin / Mill Price

(Price per Unit*)

4 inches Elbow 90 DEG SCH STD ASTM A234 WP91 Product Description

Category: 90 DEG 1.5D LR BW ELBOW/ASME B 16.9, Buttweld Fittings, Elbow 90 DEG
Material Grade: Alloy Steel, ASTM A234 WP91

The 90 DEG 1.5D LR BW ELBOW, adhering to ASME B16.9 standards, is a pivotal component in piping systems designed for a 90-degree directional change with a long radius (LR) bend. The “1.5D” specification denotes that the radius of the elbow is 1.5 times the nominal pipe size (NPS), facilitating smoother flow transitions and minimizing pressure drops compared to shorter radius elbows. This characteristic makes the LR elbow particularly suitable for systems requiring gentle flow redirection to maintain fluid velocity, reduce turbulence, and mitigate erosion at the bend.
Constructed from a variety of materials including carbon steel (ASTM A234 WPB), stainless steel, and alloy steel, this elbow offers versatility across a broad spectrum of applications. These materials ensure the elbow’s compatibility with different fluid types while providing high strength, durability, and corrosion resistance essential for long-term service in harsh environments.
Available in sizes ranging from 1/2″ to 48″ NPS, the 90 DEG 1.5D LR BW ELBOW can accommodate diverse piping system requirements. The buttweld (BW) connection ensures a secure, leak-proof joint, integral to maintaining system integrity under high pressure and temperature conditions.
This elbow is extensively used in industries such as oil and gas, chemical processing, power generation, and water treatment. Its design and construction meet the rigorous ASME B16.9 standards, making it a reliable choice for engineers seeking efficient flow control and directional change in complex piping networks.
The specific product on this page is: 90 DEG 1.5D LR ELBOW BW, NPS 4, SCH STD, ASTM A234 WP91

Specifications ASME B16.9
End-Connections Bevelled (BE) ASME B16.9

Estimated Prices

(Price per Unit) - Validity up to 31.12.2024. Prices are for estimation purposes only and subject to our terms and disclaimers.

Western Origin / Mill Price

65.8 $
(61.1 €)
Price per Unit*

Western Origin / Stock Price

84.7 $
(78.65 €)
Price per Unit*

Asian Origin / Mill Price

39.48 $
(36.66 €)
Price per Unit*

Asian Origin / Stock Price

50.82 $
(47.19 €)
Price per Unit*

* Estimated ExWorks price (no packing, no shipping, no VAT included); Mill prices valid for min. 5 tons (for pipes) / min. 1K$ order (for other items) and advanced  or guaranteed payment (example downpayment at order + balance at shipping, CAD, LC). 
For pipes: min 1 pipe (6 meters for NPS < 4″, 12 meters for NPS > 4″).

Dimensions and Weight

Nominal Pipe Size (first bore size)
Wall thickness (Schedule)

Weight (Kgs)

Unit weight (kg or lbs)

Weight (Lbs)

Unit weight (kg or lbs)

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  • BE: Bevelled Ends
  • BW: Buttweld
  • DEG: Degrees
  • ERW: Electric Resistance Welded (Pipes)
  • FB: Full Bore
  • FL: Flanged
  • HFI: High-Frequency Welding
  • LR: Long Radius
  • LSAW: Longitudinal Submerged Arc (Pipes)
  • NPS: Nominal Pipe Size
  • PCS: Pieces
  • RB: Reduced Bore
  • SCH: Pipe Schedule
  • SR: Short Radius
  • SW: Socked Weld