Bolt Hole Differences in PN16 Flat Plate Flanges Across Standards – From a Trusted Chinese Manufacturer

As a leading Chinese flange manufacturer, we produce high-quality PN16 flat plate flanges suitable for various international standards. It is important to note that bolt hole diameters and patterns can vary depending on the standard:

• EN (European) Standard: Bolt holes are slightly larger than the bolt size to allow easy alignment during installation.
• DIN (German) Standard: Bolt hole tolerances differ slightly from EN, affecting fit-up when combining flanges from multiple standards.
• GOST (Russian) Standard: Bolt hole diameter and positioning often differ, reflecting local design practices and safety requirements.
• ANSI/ASME (American) Standard: Equivalent to PN16 (Class 150), bolt holes are generally larger with a different pattern, making direct interchange with European or Russian flanges challenging.

Why Choose Our Factory:
As a Chinese manufacturer, we offer:

• Precise machining according to EN, DIN, GOST, and ANSI/ASME standards.
• Competitive pricing with stable quality.
• Flexible production to meet custom bolt hole dimensions or pattern