Stainless Steel Pipe Weight Chart: Weight Per Meter by Size and Schedule

The weight of a stainless steel pipe cannot be determined from the nominal size alone. It depends on the outside diameter, wall thickness and material density. This is why pipes with the same nominal bore can have different weights when supplied in different schedules.

This stainless steel pipe weight chart covers Schedule 5S to Schedule 80S for nominal bores from 15 mm to 300 mm (1/2" to 12"). It lists reference weights in kg/m and lb/ft and includes the calculation formula used to determine the values. The data can be used for material estimation, quotation preparation, transport planning and project calculations.

Metinox Overseas has more than 45 years of experience manufacturing and exporting ASTM and ASME certified stainless steel pipes, with an ISO 9001:2008 certified manufacturing process and Mill Test Certificate supplied with every order.

For non-standard dimensions or specific order quantities, use the Metinox Overseas SS Pipe Weight Calculator. The chart provides standard reference weights, while the calculator can be used for project-specific calculations.

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How to Read This Chart: Nominal Bore, OD, Schedule and Wall Thickness

Before the numbers, four terms are worth pinning down, because most confusion about stainless steel pipe weight per meter comes from mixing these up rather than from the maths itself.

Nominal Bore (NB) / Nominal Pipe Size (NPS): a label, not a physical measurement. A "2-inch" pipe does not have a 2-inch outside diameter; its actual OD is 60.3 mm, fixed by standard regardless of schedule.

Outside Diameter (OD): the actual measured diameter of the pipe, in millimetres. This stays constant for a given NB across every schedule.

Schedule: a code (5S, 10S, 40S, 80S, and so on) that sets the wall thickness for a given OD. A higher schedule number means a thicker wall, a smaller bore, and a heavier pipe for the same NB.

Wall Thickness: the actual dimension, in millimetres, that, together with the OD, determines weight per meter. This is the number the weight formula uses directly.

In short: NB tells you which row to look at, the schedule tells you which column, and the wall thickness in that cell is what actually drives the weight.

SS Pipe Weight Per Meter: Full Size and Schedule Table 

The table below gives stainless steel pipe weight per meter for Schedule 5S, 10S, 40S/STD and 80S/XS across the eleven most commonly ordered nominal bores, calculated per ASME/ANSI B36.19 outside diameters and wall thicknesses.

SS Pipe Weight Formula

Every figure in the table above comes from one formula, so if you ever need a size that isn't listed, you can work it out yourself in under a minute:

W (kg/m) = 0.02466 × t × (D − t)

Where D is the outside diameter in millimetres and t is the wall thickness in millimetres. Here's what that looks like with real numbers, for a Schedule 40S, NB 50mm (2") pipe:

• Outside diameter (D) = 60.3 mm
• Wall thickness (t) = 3.91 mm
• W = 0.02466 × 3.91 × (60.3 − 3.91)
• W = 0.02466 × 3.91 × 56.39
• W = 5.44 kg/m

That matches the value in the Schedule 40S/STD column for NB 50 in the table above — which is exactly how every other cell in this chart was generated.

Does Grade Affect Stainless Steel Pipe Weight? (304 vs 316)

Here's something worth knowing before you compare grades on price: weight per metre is essentially the same across 304, 304L, 316, and 316L pipe of the same size and schedule. All four are austenitic stainless steels with a density of roughly 8,000 kg/m³, so the small compositional differences between them, mainly the molybdenum in 316/316L, don't move the needle on weight in any way that matters for procurement or freight planning. The chart above applies to all four grades without adjustment.

Duplex 2205 and Super Duplex 2507 are the exception; their density runs about 1–2% higher, so a duplex pipe of identical dimensions will weigh slightly more than its 316L equivalent. If you're specifying duplex, budget for that small increase rather than reading it off this austenitic-grade chart. For full grade-by-grade composition and mechanical property comparisons, see our Stainless Steel Pipe Grades Chart.

Stainless Steel Pipe Weight in Lb/Ft (Imperial Conversion Table)

For teams working in imperial units, here is the same data expressed in pounds per foot.

Seamless vs Welded (ERW) Pipe: Does Weight Differ?

In theory, no, a seamless pipe and an ERW-welded pipe of the same outside diameter, wall thickness, and grade have identical calculated weight per meter, because the formula only depends on geometry and density, not on how the pipe was made. In practice, manufacturing tolerance means you'll see a very small real-world variance between individual lengths and between seamless and welded products, typically well under 1%, which mill certificates will show exactly for a given batch.

Standards Referenced

• ASTM A312: standard specification for seamless, welded and heavily cold-worked austenitic stainless steel pipe.
• ASME B36.19: stainless steel pipe dimensions, schedules and wall thicknesses (the source for the OD/thickness values used above).
• ASTM A999: general requirements for wrought austenitic stainless steel pipe.

Frequently Asked Questions

Need an Exact Figure for Your Order?

This chart covers standard reference sizes. For a non-standard OD, a custom wall thickness, or an exact figure for a specific order length, request a quote to get weight chart details.

Related Charts and Guides

Stainless Steel Pipe Grades Chart: 304, 304L, 316, 316L, 321 and 347 Compared

Stainless Steel Pipe Dimensions Chart

Stainless Steel Pipe Product Range