Free engineerin' tool
Pipe Schedule & Weight Calculator
Pick a nominal pipe size and schedule and you'll get the outside diameter, wall thickness, inside diameter and weight per foot. Throw in a length and it'll give y'all the total weight, water-filled weight and volume too. Wall thicknesses come off the Texas Flange pipe wall thickness chart; weight runs the standard plain-end steel pipe formula, so you can punch in any custom OD and wall you want. Matchin' up a weld neck flange? The flange bore oughta match the pipe ID you get right here.
6″ STD
18.99 lb/ft
28.26 kg/m
- Outside diameter
- 6.625 in (168.3 mm)
- Wall thickness
- 0.280 in (7.11 mm)
- Inside diameter
- 6.065 in (154.1 mm)
- Flow area
- 28.890 in²
- Water-filled weight
- 31.51 lb/ft
- Volume
- 1.501 US gal/ft
- Total for 20.0 ft
- 379.8 lb (172.3 kg) empty · 630.2 lb full of water · 30.0 gal
Weight's figured for plain-end pipe and might run a hair off from mill weights. Stainless gets a 2% density factor.
This here's a reference tool for plannin' and quotin'. Check it against your purchase spec and your site's procedures before y'all go usin' it.
Get y'all a flange quote
Questions Folks Ask Us
How do y'all figure steel pipe weight per foot?
Weight in pounds per foot is 10.69 times (outside diameter minus wall thickness) times wall thickness, both in inches. For 6 inch Schedule 40 (6.625 in OD, 0.280 in wall) dat comes out 'bout 18.97 lb/ft.
What's the difference between Schedule 40 and STD?
Up through 10 inch NPS, Schedule 40 and STD got the same wall. From 12 inch on up, STD sits at 0.375 inch while Schedule 40 keeps gettin' heavier, so y'all can't swap 'em no more.
What's the difference between Schedule 80 and XS?
Up through 8 inch NPS they're the same wall. From 10 inch on up, XS (extra heavy) holds at 0.500 inch while Schedule 80 keeps gettin' heavier.
Does the pipe schedule change the outside diameter?
Nope. For any one NPS the OD stays put; a heavier schedule just adds wall on the inside, so the inside diameter gets smaller.
How do I match a weld neck flange to my pipe?
Order your weld neck flange bored to the same schedule as the pipe, so the flange bore lines right up with the pipe inside diameter at the weld.
