Collection: Piping & Fittings
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Out of Stock - Call to OrderUsa Industrials BULK-PF-19 - 304 Stainless Steel Butt-Weld Flange, Class 150, 1-1/2" Pipe Size
Vendor:National Boiler SupplyRegular price $101.14 USDRegular priceSale price $101.14 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials ZUSA-HT-3732 - 3-A Silicone Tubing, 18mm ID x 23mm OD, 2 ft.
Vendor:National Boiler SupplyRegular price $24.69 USDRegular priceSale price $24.69 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials ZUSA-HT-3727 - 3-A Silicone Tubing, 18mm ID x 23mm OD, 100 ft.
Vendor:National Boiler SupplyRegular price $1,109.61 USDRegular priceSale price $1,109.61 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials ZUSA-HT-4230 - Aramid-Braid Reinforced Viton Tubing, 8mm ID x 13.5mm OD, 10 ft.
Vendor:National Boiler SupplyRegular price $334.62 USDRegular priceSale price $334.62 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials ZUSA-HT-3783 - 3-A PVC Tubing, 4mm ID x 9mm OD, 100 ft.
Vendor:National Boiler SupplyRegular price $237.61 USDRegular priceSale price $237.61 USDOut of Stock - Call to Order -
Usa Industrials ZUSA-HT-3758 - 3-A PVC Tubing, 3mm ID x 7mm OD, 10 ft.
Vendor:National Boiler SupplyRegular price $10.55 USDRegular priceSale price $10.55 USD -
Usa Industrials ZUSA-HT-3892 - 3-A PVC Tubing, 15mm ID x 24mm OD, 5 ft.
Vendor:National Boiler SupplyRegular price $16.34 USDRegular priceSale price $16.34 USD -
Usa Industrials ZUSA-HT-3870 - 3-A PVC Tubing, 10mm ID x 17mm OD, 10 ft.
Vendor:National Boiler SupplyRegular price $22.32 USDRegular priceSale price $22.32 USD -
Out of Stock - Call to OrderUsa Industrials ZUSA-TF-37FL-40 - 37-Degree Flared 316 Stainless Steel 90-Degree Elbow Connector, 1/2" OD
Vendor:National Boiler SupplyRegular price $85.88 USDRegular priceSale price $85.88 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials BULK-PF-115 - 316 Stainless Steel Class 150 Socket-Weld Flange, 1-1/2" Pipe Size
Vendor:National Boiler SupplyRegular price $119.89 USDRegular priceSale price $119.89 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderUsa Industrials ZUSA-TF-37FL-8 - 37-Degree Flared 316 Stainless Steel Straight Adapter, 3/4" OD x 3/4" MNPT
Vendor:National Boiler SupplyRegular price $68.29 USDRegular priceSale price $68.29 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderSun Joe SJI-MFGA1 - SJI-MFGA1 Outdoor Faucet and Hose Tap Connector
Vendor:National Boiler SupplyRegular price $21.55 USDRegular priceSale price $21.55 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderSanitube 7WL6P-600 - Long Tee, T316L Polished, 6" OD, ID/OD
Vendor:National Boiler SupplyRegular price $878.38 USDRegular priceSale price $878.38 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderSanitube 7WS4P-150 - Polished Short Tee, 304, 1-1/2" ID/OD
Vendor:National Boiler SupplyRegular price $20.82 USDRegular priceSale price $20.82 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderSanitube 14VB6-100 - Type A 14VB Stub End, T316L, 1"
Vendor:National Boiler SupplyRegular price $41.75 USDRegular priceSale price $41.75 USDOut of Stock - Call to Order -
Out of Stock - Call to OrderSanitube 32W4P-200150 - Polished Eccentric Reducer, T304, 2" x 1-1/1"
Vendor:National Boiler SupplyRegular price $26.42 USDRegular priceSale price $26.42 USDOut of Stock - Call to Order
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Commercial-Grade Pipe, Tubing & Industrial Fittings
Streamline your commercial mechanical builds, hydronic boiler loops, and drainage installations with our comprehensive catalog of commercial-grade piping and fittings. Sourced directly from top-tier distribution networks, our inventory features heavy-wall Type L and Type M rigid copper tubing, precision-engineered wrot copper sweat fittings, Schedule 40 PVC pressure pipe, and gravity-fed PVC DWV drainage components.
Every product line is meticulously structured to comply with rigid engineering baselines—including ASTM B88 tolerances for copper distribution and ASTM D1785 / ASTM D2661 standards for durable polymer systems. Engineered to meet strict institutional mechanical codes, our multi-variant inventory scales seamlessly from 1/2" up to 4" nominal sizing configurations to ensure absolute compatibility at the job site.
Engineered for High-Performance Applications:
- Hydronic & Boiler Feed Piping: Heavy-wall copper lines designed for optimal thermal conductivity and structural pressure resistance.
- Potable Water Distribution: Lead-free compliant infrastructure certified to NSF standards.
- Process Plumbing & Drainage: Complete Schedule 40 and DWV systems built to resist scaling, corrosion, and high-velocity friction loss.