
PN16 DN250 Weld Neck Flange
PN16 DN250 weld-neck flange (carbon steel), made to EN 1092-1. Butt-weld hub geometry for high-integrity bolted joints on pressurised process and utility lines. Quoted and sold per piece.
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Applications & Usage
Used on critical process, steam, and cyclic-load lines where a butt-weld hub improves stress distribution at the flange joint.
Technical Specifications
| Specification | Value |
|---|---|
| Nominal size | DN250 |
| Pressure class | PN16 |
| Material | Steel |
| Alloy/Grade | Carbon steel |
| Standard | EN 1092-1 |
| D (OD) | 405 mm |
| K (PCD) | 355 mm |
| Bolt | 12 × M24 |
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Technical guides
Pipe schedule chart: Sch 40 and Sch 80 sizes, wall thickness and weight (NPS ½" to 24")
Steel pipe schedule chart for NPS ½" to 24": outside diameter, Schedule 40 and Schedule 80 wall thickness and weight per metre to ASME B36.10M, what NPS, DN and schedule mean, and metric EN equivalents.
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Flange dimension tables for EN 1092-1 PN6, PN10, PN16, PN25 and PN40 and ASME B16.5 Class 150 and 300: outside diameter, bolt circle, number and size of bolts, and why PN and Class flanges do not mate.
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