Stainless Steel Pipe 6" NPS x Schedule 40 304OD: 6-5/8"WALL: 1/4"Great WeldabilityCorrosion ResistantIn Stock$157.64at 12"
Stainless Steel Pipe 6" NPS x Schedule 40 316OD: 6-5/8"WALL: 1/4"Great WeldabilityCorrosion ResistantIn Stock$259.39at 12"
Stainless Steel Pipe 6" NPS x Schedule 80 316OD: 6-5/8"WALL: 7/16"Great WeldabilityCorrosion ResistantIn Stock$479.33at 12"
Stainless Steel Pipe 8" NPS x Schedule 40 304OD: 8-5/8"WALL: 5/16"Great WeldabilityCorrosion ResistantIn Stock$266.75at 12"
Stainless Steel Pipe 8" NPS x Schedule 40 316OD: 8-5/8"WALL: 5/16"Great WeldabilityCorrosion ResistantUnavailable
Stainless Steel Rectangle Tube 2" x 1" x .125 304W: 1"H: 2"WALL: 1/8"Great WeldabilityCorrosion ResistantUnavailable
About our stainless steel
Two grades cover almost every stainless job, and we stock both deep. 304 is the indoor and general-purpose pick: railings, brackets, food-grade fixtures, shop fittings. 316 earns its upcharge near salt water, chemicals, and road brine. Debating between them? Coastal or marine, go 316; everywhere else, 304 does the job.
Shapes on the shelf: round bar, flat bar, square bar, hex bar, angle, pipe, square tube, and sheet in 2B finish. Everything cuts to the inch like the rest of the store. Need a polished or specialty finish we don't list? Send a quote request and we'll source it.
304 or 316: which stainless do you need?
One question decides it: will the part meet salt water, road salt, or pool chemistry? If it won't, buy 304: it's the standard for indoor railings, kitchen and brewery fittings, brackets, and food-contact work. If it will, buy 316: its 2-3% molybdenum is what stops chloride pitting on wharf hardware, boat parts, and anything living near the Atlantic.
How much more does 316 cost?
Less than its reputation, and it depends on the shape. Two real pairs from our shelf, priced per 12″ piece in CAD as of June 2026:
| Same size, same length | 304 | 316 |
|---|---|---|
| Flat bar, 1/4″ x 2″ | $26.11 | $29.30 |
| Pipe, 1″ NPS schedule 40 | $17.48 | $26.58 |
So budget roughly 10-50% over 304 by shape, and check the live page for today's number. On one piece of boat hardware the difference is a coffee; replacing a pitted part twice is the expensive route. Want the full breakdown? Our 304 vs 316 guide walks through when the upcharge pays for itself.
What shapes are on the rack?
Will stainless rust?
It can stain and pit, it just resists far longer than steel. Near salt, 304 shows brown tea staining before real damage; inland it stays clean for decades with a rinse. The avoidable mistake we see: carbon steel grinding dust settling on stainless, rusting, and looking like the stainless failed. Keep dedicated brushes and discs for stainless work and it'll keep its looks.
Inspected job? Mill test reports are available on request, any order size.