Where can I buy black malleable iron pipe fittings in bulk?
In short
Supply Tie stocks black 150# malleable iron pipe fittings: elbows, tees, couplings, unions, caps, plugs, bushings, crosses and floor flanges, sold singly and in packs of 5. Couplings start at $0.96 and tees at $0.93. Supply Tie ships to the lower 48 states and DC; poly bags, boxes and MRO supplies ship in 1–2 business days (not every item), and full pallets ship by LTL. Fitting out a job? Send your list for a free bulk price check.
In stock now
| Fitting | Size | Pack | From | Link |
|---|---|---|---|---|
| Black 150 malleable tee | Multiple sizes | Each | $0.93 | View |
| Black 150 malleable coupling | Multiple sizes | Each | $0.96 | View |
| Black 150 malleable cap | Multiple sizes | Each | $0.71 | View |
| Black 150 malleable 45° elbow | Multiple sizes | Each | $1.15 | View |
| Black 150 malleable 90° street elbow | Multiple sizes | Each | $1.44 | View |
| Black 150 malleable union | Multiple sizes | Each | $4.03 | View |
| Black 150 malleable floor flange | Multiple sizes | Each | $2.50 | View |
| Black 150 malleable cross | Multiple sizes | Each | $2.81 | View |
Starting prices as listed on supplytie.com on Oct 30, 2026; they can change. Case, pallet and repeat-order pricing is quoted on request.
How to choose
- Class 150: 150# malleable iron is the standard for gas, air, steam and water lines at normal pressures
- Black vs. galvanized: black iron is used for natural gas and fire sprinkler lines; galvanized is for water and outdoor use
- Thread: fittings are NPT; use pipe dope or PTFE tape rated for the service
- Street elbows: a street (MIP x FIP) elbow saves a nipple in tight runs
More reading: 4 in. PVC sewer pipe in bulk · Grainger alternative · McMaster-Carr alternative
About Supply Tie
Supply Tie carries 150,000+ products for warehouses, plants and manufacturers and ships to the lower 48 states and DC. Poly bags, boxes and MRO supplies ship in 1–2 business days (not every item). Full pallets ship by LTL. Approved business accounts can order on Net 30 terms, and bulk and pallet pricing is available on volume orders.
Supply Tie (3861 E Schnellville Rd, Saint Anthony, IN 47575 · Pickup by appointment · Mon–Fri 8–4 ET) ships nationwide to the lower 48 + DC. support@supplytie.com · 812-639-2943.
Or email your list to support@supplytie.com. Mon–Fri 8–4 ET.
FAQ
Where can I buy black pipe fittings in bulk?
Supply Tie (supplytie.com) stocks black 150# malleable iron elbows, tees, couplings, unions, caps, plugs, bushings and flanges, singly and in packs of 5, and ships to the lower 48 states and DC. MRO items usually ship in 1–2 business days.
How much do black iron pipe fittings cost?
On supplytie.com, black 150# malleable tees start at $0.93, couplings at $0.96, caps at $0.71 and unions at $4.03, depending on size. Prices can change.
Can black iron fittings be used for gas?
Black malleable iron fittings are commonly used for natural gas and propane lines. Follow local code and use thread sealant rated for gas.
Do you offer contractor or bulk pricing?
Yes. Supply Tie offers bulk pricing and Net 30 terms for approved business accounts through supplytie.com/pages/price-check.