Introduction
EN 1092-1:2018 “Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated– Part 1: Steel flanges”
specifies the dimensions, types, sealing faces, tolerances and marking of circular steel flanges with pressure designations from PN 2.5 to PN 400.
It covers common flange types such as plate flanges (Type 01), welding neck flanges (Type 11), threaded flanges (Type 13), loose flanges (Type 04/05), and blind flanges (Type 35/36).
This standard replaces former national standards (e.g. DIN 2576, DIN 2543) and provides a harmonized system across Europe for the design and application of pipe flanges in industries such as oil, chemical, power, mechanical engineering and water treatment.
Catalog
- Dimensions of PN 2,5 flanges
- Dimensions of PN 6 flanges
- Dimensions of PN 10 flanges
- Dimensions of PN 16 flanges
- Dimensions of PN 25 flanges
- Dimensions of PN 40 flanges
- Dimensions of PN 63 flanges
- Dimensions of PN 100 flanges
- Dimensions of PN 160 flanges
- Dimensions of PN 250 flanges
- Dimensions of PN 320 flanges
- Dimensions of PN 400 flanges
Have You Any Question?
What to do if Mixed Materials are found in the project?
When materials get mixed up, it’s like building a Lego set with wrong pieces eventually everything falls apart.
The only viable solution requires 100% PMI testing on every individual flange using calibrated XRF analyzers, eliminating material certification risks through a certified processes.
Every factory out there claims they check their flanges with those XRF guns Piece by Piece. In all of Tsingshan Group’s backyard, only 3 manufacturers actually full-test every piece. We’re one of them.
Why Small Foundries happen the mix-ups?
These monster forging machines won’t start unless you order over 15 tons , like buying 100 pens when you need 10 . Factories have to mash together different steel batches.
Keeping materials separate costs small foundries 28% extra, like trying to sort Legos with a toddler wrecking them daily.
6/10 suppliers can’t track materials properly, it’s shipping mystery boxes that’ll bite us when things go wrong.
What is the standard lead time for orders? How do you handle delays caused by emergencies (e.g., pandemics, logistics disruptions)?
The standard lead time is 1 week, adjusted based on product complexity and order volume.
For unexpected risks, we implement the following measures:
—-Maintain backup suppliers and diversified logistics channels.
—-Monitor supply chain status in real time and provide early warnings to customers.
—-Prioritize critical orders and offer expedited service options.
What specific quality control steps are implemented during production?
Three-tier QC system:
—-Incoming Quality Control (IQC): Verify raw material specifications and certifications.
—-In-Process Quality Control (IPQC): Sample-test key parameters at each production stage.
—-Outgoing Quality Control (OQC): 100% visual/functional inspection, packaging checks, and destructive testing on samples.
—-Use SPC (Statistical Process Control) and automated inspection tools to ensure consistency.
How do you continuously improve product quality and on-time delivery rates?
Data-driven approach: Monthly analysis of customer complaints, return rates, and delivery performance.
PDCA Cycle (Plan-Do-Check-Act): Implement process upgrades or supplier training based on findings.
Closed-loop feedback: Regularly survey customer satisfaction and integrate results into KPI evaluations.
Intended Use: Suitable for supplier manuals, contract annexes, official websites, or sales communication to enhance client trust and reduce collaboration friction.
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