Niubid 60 Pack 3/4 Inch Cast Iron Pipe Fittings (20 Elbows, 20 Tees, 20Flange), Industrial Pipe for Threaded Black Pipes and Fittings, DIY Steampunk Industrial Vintage Style.

Why I reached for this fitting set

I had a small mountain of black pipe nipples on my bench and an idea for a run of open shelving across a kitchen and a home office. Buying individual elbows, tees, and flanges at a big-box store adds up fast, so I gambled on a bulk kit. The Niubid 3/4-inch fitting set promised enough parts for multiple shelves, a consistent look, and the kind of malleable iron you can clean, paint, and assemble without specialized tools. After a few weekends of use, here’s how it actually performed.

What you get

The set is simple and useful: 60 total malleable iron fittings—20 elbows, 20 tees, and 20 flanges—threaded for 3/4-inch black pipe. That mix hits the sweet spot for typical DIY shelving and frame builds. For example:
- Two wall-supported shelf brackets using elbows (one per bracket) will consume 2 elbows and 2 flanges per shelf—enough for up to 10 shelves in this kit.
- If you prefer tee-based brackets (for a front support under the shelf), you’ll use 2 tees and 2 flanges per shelf—again, up to 10 shelves.

In practice, project designs vary, but 20 of each fitting gives a lot of flexibility. I used a combination: elbows for minimalist brackets in the office and tees for deeper, load-bearing brackets in the kitchen.

Build quality and finish

These are malleable iron castings—the standard material for decorative pipe furniture and shelving. They’re solid and weighty, which matters for rigidity under load. Threads mated reliably with standard 3/4-inch NPT black pipe nipples I had on hand. I tested pieces against nipples from two different hardware chains and didn’t run into compatibility issues.

Expect an industrial finish, not a showroom polish. Out of the box, the pieces arrived with a light oil to prevent rust; the color is more gray cast iron than jet black. If you want a uniform deep black or a specific tone, plan on cleaning and painting:
- Degreasing: I used mineral spirits and, for stubborn pieces, a quick shot of brake cleaner. A thorough wipe and 10–15 minutes of dry time did the trick.
- Finishing: I primed with a rust-inhibiting primer and top-coated with a satin black enamel. For a “raw” industrial look, I also tried a gunmetal spray and a coat of paste wax—nice feel, good protection.

Casting quality is serviceable for furniture work. On my set, two flanges had minor casting flash inside screw holes and needed a quick pass with a 3/16-inch bit to clear. One tee had slightly rough threads; it still engaged but benefited from chasing with a 3/4-14 NPT tap. That’s not unusual for bulk malleable fittings at this price point, but it’s worth noting if you’re expecting every piece to be perfect out of the box. I didn’t find chips, cracks, or major deformities.

Compatibility and assembly

Threading is standard 3/4-inch NPT. A few practical notes from the bench:
- “3/4-inch” in pipe world is nominal. The outside diameter of a 3/4-inch nipple is about 1.05 inches. If you’re mixing with existing pipe, double-check your size before ordering.
- Assembly is straightforward by hand. For final tightening, a pipe wrench or large adjustable wrench helps you clock fittings to your exact angles without over-stressing them.
- For fixed furniture, I prefer thread locker or a dab of clear nail polish on threads to resist vibration. For adjustable builds, a bit of plumber’s tape can help take up slop without committing you to a permanent bond.

The flanges have a four-hole pattern. I had good results with #12 wood screws into studs for the office shelves and 5/16-inch lag screws into studs for the kitchen run, given the deeper shelf and heavier load. If you’re going into drywall, use proper structural anchors or, better yet, hit studs—these brackets will only be as strong as the substrate and fasteners allow.

In use: shelving, frames, and odds and ends

I built:
- Three 28-inch office shelves using elbows for minimalist brackets.
- Two wider kitchen shelves using tee brackets that support a deeper butcher-block board.
- A small rolling shop cart frame where tees and elbows form the corners and rails.

The fittings held alignment well and gave the projects that familiar industrial profile without looking sloppy. Once painted, everything matched nicely. The flanges sit flush and provide a solid footprint on both wall and underside of shelf. Tee-based brackets do a better job supporting deep shelves and heavier items; elbow brackets look cleaner for lighter loads and shallower shelves.

Load-bearing is always project-specific, but the fittings themselves didn’t flex under reasonable household loads. The weak points in any pipe-shelf build tend to be:
- Fasteners and wall substrate
- The shelf material and how it’s attached
- The length and leverage of the pipe arms

Plan for those, and the fittings won’t be your limiting factor.

Fit and finish quirks

A few gotchas to expect:
- Color out of the box is gray/graphite with oil, not a deep black. If you need true black, paint is the path.
- A small handful of pieces may have rough threads or minor flash in screw holes. Keep a drill bit and, ideally, a thread chaser handy.
- The cast surface has the usual texture. For a smoother look, sand and fill before paint—but that’s extra work most DIYers skip.

None of these issues slowed me down materially, but if you’re under a tight deadline and expect zero prep, budget an hour to clean and test-fit everything before installation.

Value

Bought individually, 3/4-inch flanges, tees, and elbows can blow up a project budget quickly. The economy of a matched 60-piece set is the major win here. Beyond price, there’s also the consistency advantage: matching patterns and dimensions make alignment easier across multiple brackets and shelves.

If you only need a couple of brackets, piecemeal may still make sense. But for multi-shelf runs, frames, or a few small builds around the house, the bundle is cost-effective.

Who this set suits best

• DIYers building industrial-style furniture, shelving, and fixtures
• Makers who plan to paint or finish for a uniform look
• Anyone needing a ready stash of 3/4-inch fittings for iterative builds

Who might look elsewhere:
- Those needing plumbing-rated fittings for pressurized systems—these are for furniture/decor projects, not code-bound piping
- Perfectionists who want immaculate castings out of the box with no cleanup
- Builders who require a pre-finished, true black surface without painting

Tips for better results

• Degrease thoroughly before priming; any residual oil will telegraph through paint.
• Pre-assemble and “clock” your fittings on the bench to align tees and elbows before mounting flanges.
• Use painter’s tape to mark stud locations and flange outlines on the wall for consistent spacing.
• For shelves deeper than 10–12 inches or for heavy loads, consider tee-based supports or add a second support point under the front edge.

The bottom line

The Niubid set did exactly what I needed: supply a large batch of compatible 3/4-inch fittings at a reasonable cost for a mix of shelves and small shop projects. The castings are sturdy, threads are generally reliable, and with a bit of prep and paint, the finished projects look clean and cohesive. Expect some light cleanup on the occasional piece and plan to paint if you want a uniform black or custom color.

Recommendation: I recommend this set for DIY furniture and shelving builds where value and versatility matter more than flawless out-of-box finish. If you’re comfortable with minor prep—degreasing, a little thread chasing, and paint—you’ll get a lot of mileage out of the 20/20/20 mix. If you need plumbing-rated parts or a perfect, pre-finished aesthetic, this isn’t the right kit. For industrial-style projects, though, it hits the mark.