A234 Wpb 90Degree Elbow

QS Pipe Fitting: Wenzhou A234 WPB 90Degree Elbow

A234 WPB long-radius 90 degree elbow with STD wall and butt weld ends, supplied in black finish for petroleum pipeline service.

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One-Minute Overview

Long-radius 90 degree elbow in A234 WPB carbon steel for petroleum pipelines.
2 Inch, STD wall, LR pattern, butt weld ends and a black protective surface.
Built to ANSI 16.9 with a smooth bore that keeps pressure loss low.
Sizes, schedules and packing are confirmed per inquiry with a specification sheet.

The A234 WPB 90 degree elbow is the standard way to turn a petroleum line through a right angle without choking the flow. This one is the long-radius (LR) pattern in 2 Inch with STD wall, so the bend centreline is generous and the bore stays smooth from bevel to bevel. A234 WPB carbon steel is the workhorse grade for moderate pressure and temperature, and the butt weld ends join the pipe with a full-penetration weld rather than a threaded joint that could weep. The black surface is a light protective finish for storage and transport, and veneer case or pallet packing keeps the bevels from getting knocked about. Sizes, wall thicknesses and schedules are confirmed per inquiry, and the standard call-out stays ANSI 16.9.

Name: A234 WPB 90 Degree Elbow
Material: A234 WPB
Standard: ANSI 16.9
Size: 2 Inch
Thickness: STD
Type: LR
End: Butt Weld
Surface: Black
Packing: Veneer Case or Pallet
Usage: Petroleum Pipeline
Sizes, wall thicknesses and schedules are confirmed per inquiry, and a detailed specification sheet is available on request.

Specifying this elbow is mostly about matching three numbers to the pipe it joins. Confirm the 2 Inch nominal size against the actual outside diameter, keep the STD wall in step with the pipe schedule, and check that the long-radius bend fits the space allowed on the spool drawing, because LR takes more room than a short-radius elbow but rewards you with lower pressure drop and less turbulence. Since the ends are butt weld, ask for the bevel angle and land that match your welding procedure, and keep the A234 WPB grade in the same material group as the run pipe so preheat and post-weld treatment stay consistent. The black surface is protection, not a coating for service, so plan the final paint or coating system separately once the elbow is welded in.

On the rack, good fit-up decides the weld. Align the bores with a clamp, leave the root gap your procedure calls for, tack in two places and recheck the 90 degree angle before running the root pass, then fill and cap with controlled heat input and let the joint cool without a draught. Protect the bevels during handling, keep the veneer case or pallet intact until the elbow reaches the fitter, and store elbows off the ground so the ends stay clean. Before the spool ships, verify the centre-to-end dimension, the bead profile and the grade stamped on the body. Sizes, schedules and packing details are confirmed per inquiry, so request the specification sheet with the order rather than assuming the nominal description covers every dimension.

FAQ

Q1. Why choose a long-radius elbow instead of a short-radius one here?

The LR pattern bends on a centreline of 1.5 times the nominal size rather than 1.0, so the flow turns more gently. That gentler turn means lower pressure drop, less turbulence and less erosion on the outer wall, which matters on a petroleum line that runs continuously. The trade-off is space: LR needs a wider envelope on the spool, so confirm the room before you specify it.

Q2. Does the black paint mean I can skip coating it after welding?

No, it is shop protection, not a service coating. The black surface keeps the elbow from rusting in the veneer case or on the pallet, and it usually gets cleaned off at the weld bevels. Once the joint is made and tested, the line still needs whatever paint or coating system the project specifies for its temperature and environment.

Q3. Is checking the 90 degree angle before welding really worth the fuss?

Ask anyone who has had to cut a finished spool apart. A couple of degrees of drift at one elbow multiplies across a run of pipe, and suddenly the header does not meet the nozzle. Tack, check the angle, then weld, because thirty seconds with a square is cheaper than one afternoon with a grinder and some very creative language.

Q4. How long will production take?

Standard sizes are typically ready within 30 days, and in-stock items ship immediately. Larger or custom orders get a confirmed date per order, because the schedule depends on quantity, material, the bolt pattern you specify, and how busy production is at the moment you order.

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