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Introduction
AS/NZS 4087:2011 – Metallic Flanges for Waterworks Purposes
The joint Australian/New Zealand Standard AS/NZS 4087:2011 specifies the requirements for metallic flanges used in water supply, wastewater, and pressure pipeline systems. It defines flange types, pressure ratings (PN14, PN16, PN21, PN35), materials, dimensions, bolt patterns, and tolerances. The standard is tailored for waterworks applications and aligns with both metric sizes (DN) and internationally recognized pressure designations. It ensures compatibility between different manufacturers and provides reliable performance under defined pressure and temperature ranges.
Catalog
- B1 Dimensions For Copper Alloy Flanges——PN14
- B2 Dimensions For Grey Cast Iron Flanges——PN14
- B3 Dimensions For Grey Cast Iron Flanges——PN21
- B4 Dimensions For Grey Cast Iron Flanges——PN35
- B5 Dimensions For Ductile Cast Iron Flanges——PN16
- B6 Dimensions For Ductile Cast Iron Flanges——PN35
- B7 Dimensions For Steel Flanges——PN16
- B8 Dimensions For Steel Flanges——PN21
- B9 Dimensions For Steel Flanges——PN35
- FLANGE JOINTING GUIDLINES
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.