This reference provides the dimensional and weight data for Schedule STD Pipe 28 Inch (DN700) in a format useful for piping design, drafting, estimating, procurement, and field coordination. Use the source table as the controlling local data, then compare it with the project specification, material requirements, and applicable fabrication documents.
For related terminology, connect this page with the site’s references on pipe schedules, NPS and DN pipe size conversion, pipe outside diameter and inside diameter, and steel pipe weight. These topics help readers interpret the dimensions without confusing nominal size with measured geometry.
Schedule STD Pipe 28 Inch (DN700) is a steel pipe size commonly used in large industrial and utility piping systems where standard dimensions, structural reliability, and high flow capacity are important. Based on the current page data under ANSI/ASME B36.10, this pipe size has an outside diameter of 711 mm, an inside diameter of 691.94 mm, a wall thickness of 9.53 mm, and a pipe weight of 164.86 kg/m.
28 Inch Schedule STD Pipe Dimensions
The following values are listed for NPS 28 Schedule STD pipe, which corresponds to DN700 in metric designation.
- Pipe Size: NPS 28 Inch
- DN Size: DN700
- Outside Diameter (OD): 711 mm
- Inside Diameter (ID): 691.94 mm
- Wall Thickness: 9.53 mm
- Pipe Weight: 164.86 kg/m
- Pipe Weight Including Water: 540.7 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule STD Pipe 28 Inch (DN700) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| STD | 28 Inch | 700 | 711 | 691.94 | 9.53 | 164.86 |
What Is Schedule STD Pipe?
Schedule STD means Standard Weight in the IPS pipe system and is commonly referenced for carbon steel and steel pipe dimensions under ASME B36.10. In practical piping work, Schedule STD is used as a standard wall thickness designation for many nominal pipe sizes. It helps engineers, fabricators, and buyers confirm dimensional compatibility, estimate weight, and coordinate with fittings, flanges, supports, and structural loads.
Common Uses of 28 Inch Schedule STD Pipe
28 inch Schedule STD pipe is commonly used in very large piping systems where high flow capacity and standard steel pipe dimensions are required. This size is often selected for utility, transmission, and industrial services where large-volume flow and reliable dimensional data are important for design and construction.
- Large water transmission lines for plant and utility service
- Cooling water systems in power plants and industrial facilities
- Stormwater and drainage piping in infrastructure projects
- Industrial utility piping for bulk fluid transport
- Pipeline headers and manifolds in large process plants
- Pump suction and discharge lines where large diameter piping is needed
- Municipal and public works projects requiring large steel pipe sizes
- Replacement and upgrade projects where standard pipe dimensions are required
In practical engineering work, this pipe size may be reviewed when checking flow capacity, support loading, transport weight, handling requirements, and installation planning. Final pipe selection should always be verified against project pressure, temperature, fluid type, corrosion allowance, and material specifications.
Why OD, ID, Thickness, and Weight Matter
Exact OD, ID, wall thickness, and weight values are important for support design, material take-off, transport planning, lifting studies, welding preparation, and installation work. For a pipe as large as 28 inch DN700, accurate weight data is especially useful for crane selection, support design, and logistics planning. Inside diameter is also important for flow calculations and hydraulic capacity review.
NPS 28 and DN700 Explained
NPS means nominal pipe size in inch units, while DN means diameter nominal in metric units. The current page identifies this pipe as NPS 28 and DN700, which is the standard naming format widely used in piping drawings, specifications, and procurement documents.
Conclusion
Schedule STD Pipe 28 Inch (DN700) is listed on the current page with 711 mm OD, 691.94 mm ID, 9.53 mm wall thickness, and 164.86 kg/m weight. It is a useful steel pipe reference for engineers, designers, and buyers who need standard dimensional and weight data for large piping systems and project coordination.
How to Use the 28 Inch DN700 Pipe Data
The listed outside diameter is the key interface dimension for fittings, flanges, clamps, supports, sleeves, and layout coordination. The inside diameter is more relevant to hydraulic review, internal clearance, lining considerations, and flow-area calculations. The listed wall thickness helps identify the dimensional configuration, but it should not be treated by itself as a complete pressure-design assessment.
The dry pipe weight is useful for material take-offs, shipping estimates, lifting plans, support reactions, and structural coordination. The separate water-filled weight entry should be reviewed when evaluating temporary handling, operating loads, supports, anchors, and adjacent structures. Actual project loads may also include insulation, coatings, lining, valves, fittings, contents other than water, and other attached components.
Design and Drafting Checks
- Confirm that the drawing, purchase description, and bill of materials use the same NPS, DN, and schedule designation.
- Check mating components against the listed outside diameter and the applicable fitting or flange standard.
- Use the inside diameter for preliminary flow or hydraulic review, while confirming allowances and tolerances required by the project.
- Coordinate the pipe weight with support spacing, anchors, guides, lifting points, and installation access.
- Review material grade, corrosion allowance, temperature, pressure, joining method, and inspection requirements separately from dimensional identification.
Useful related internal references include pipe flange dimensions, butt-weld fitting dimensions, pipe support design, and pipe spool drafting terminology. Linking those subjects from this page gives readers a practical path from nominal pipe identification to fabrication and installation coordination.
Frequently Asked Questions
What does Schedule STD mean for this pipe?
Schedule STD means Standard Weight in the IPS pipe system. On this page, it identifies the dimensional configuration listed for the NPS 28, DN700 steel pipe reference.
Are NPS 28 and DN700 the same designation?
They are the inch-based and metric nominal designations used for the pipe reference on this page. NPS describes nominal pipe size in inch units, while DN describes nominal diameter in metric terminology.
Why are both outside diameter and inside diameter provided?
Outside diameter is important for component fit-up, supports, sleeves, and layout. Inside diameter is used for flow-area review, hydraulic calculations, and internal clearance checks.
Does the STD designation alone establish a pressure rating?
No. A schedule designation identifies dimensional information; pressure suitability also depends on material, design temperature, allowable stress, corrosion or erosion allowance, joining details, and the governing project design requirements.
Why is the pipe weight important?
Pipe weight supports estimating, transport planning, lifting studies, support design, and structural coordination. The operating or water-filled condition should be considered separately from the unloaded pipe condition.
Can this page replace project engineering review?
No. Use the page as a dimensional reference and verify the final selection against the project specification, applicable standards, service conditions, fabrication requirements, and approved engineering calculations.