Pipe Flange Dimensions: Why “DN15 to DN600” Isn’t Enough to Order By
A flange size alone doesn’t fix its dimensions. Here’s what actually determines bolt circle, hole count, and facing — and why mismatched standards don’t bolt up.
Standards & Specs
Pipe Coupling Corrosion: A Material Selection Guide
Pipe coupling corrosion resistant material selection — causes, galvanic risk, gasket compatibility, and how to choose by environment. Full guide.
Pipe Coupling Maintenance: When to Replace vs Repair
Pipe coupling maintenance inspection catches gasket wear and bolt torque loss before failure. Know when to repair vs replace at your next check.
Pipe Coupling Pressure Ratings Explained
PN10, PN16, PN25 — what pipe coupling pressure ratings actually mean, how test pressure differs from working pressure, and how to specify correctly.
How to Read a Pipe Coupling Datasheet: 7 Specs That Matter
How to read a pipe coupling datasheet: the 7 specs — OD range, pressure, gasket, material, approvals — that decide fit, safety and class compliance.
Pipe Coupling Bolt Torque Specs: A Practical Field Guide
Pipe coupling bolt torque specs: why even compression matters, staged cross-pattern method, what torque depends on, and how to find the correct value.
What Is Pipe OD? Understanding Pipe Sizing for Couplings
Most pipe-coupling failures that show up on a project’s commissioning report were ordered wrongly weeks earlier. Not specified wrongly — ordered wrongly. The contractor asked for a “DN100 coupling,” the supplier sent one, and the coupling does not fit the pipe on site. The pipe is the correct DN. The coupling is the correct DN. … Read more
Pipe Coupling Installation Guide: Step-by-Step
A correctly installed mechanical pipe coupling holds full pressure for decades. A poorly installed one leaks within months, sometimes within hours. The difference is rarely the coupling itself — most modern couplings from reputable manufacturers (JWC, Aju, Victaulic, Romacon, Smith-Blair) ship from the factory ready to perform. The difference is the discipline of the installation: … Read more
NBR vs EPDM vs Viton Gaskets for Pipe Couplings
When selecting gasket materials for pipe couplings, NBR, EPDM, and Viton are the three critical elastomer options that dominate Singapore’s industrial, maritime, and HVAC sectors. The gasket is the seal — in a mechanical pipe coupling, whether it’s a grooved coupling, repair clamp, or flexible connector, the housing holds the joint together, but the gasket … Read more
Complete Pipe Coupling Size Chart: DN15 to DN300
This pipe coupling size chart covers DN15 to DN300 — giving you OD ranges, bolt specs, pressure ratings, and gasket selection for mechanical pipe couplings in one complete reference. Choosing the right coupling starts with one number: the actual outside diameter (OD) of your pipe. Not the nominal bore. Not the DN size. The OD. … Read more