Central Fresh Water Cooling on Ships: Coupling Selection Guide
HT and LT fresh water cooling loop specs, water chemistry limits, EPDM vs NBR, and coupling selection by loop section for marine engine cooling.
Cargo Piping on Tankers: Coupling Selection for Chemical, LNG and LPG
How the IGC and IBC Codes govern joint choice on chemical, LNG and LPG tanker cargo piping, and where mechanical couplings are still permitted.
Bilge, Sewage and Greywater Piping: Coupling Choices for Ship Systems
How bilge, sewage and greywater piping differ on coupling selection, MARPOL rules and corrosion — and where JWC, Romacon, Smith-Blair and Helden actually fit.
Fuel Oil System Piping: Coupling Requirements on Merchant Vessels
Coupling selection rules for marine fuel oil piping — fire-test certification, Class I/II/III limits, and the right gasket material for HFO/VLSFO.
Marine Fire Main Piping: Couplings for Shipboard Fire Systems
Why fire main couplings need ISO 19921 fire-test certification, why slip-on joints are banned in cat A, and how JWC’s FRC covers the gap.
Ballast Water Treatment Piping: Coupling Selection for BWTS Retrofits
BWTS retrofit coupling selection after IMO D-2 enforcement — why EPDM fails in electrochlorinated ballast lines and what to spec instead.
Class I, II and III Marine Piping: What the Categories Mean for Couplings
What marine piping Class I, II and III actually mean, why slip-on couplings are banned outright in Class I, and where they’re freely usable instead.
Classification Societies Compared: DNV, ABS and LR for Marine Couplings
How DNV, ABS and LR Type Approval works for marine pipe couplings, and which certificates a coupling actually needs to hold before quoting classed vessel work.
API 5L, 6A and 1104: Pipeline Standards Every Coupling Buyer Should Know
What API 5L, 6A and 1104 actually govern, and the one place mechanical couplings still fit a welded pipeline world — emergency repair clamps.
Singapore Standards for Pipework: What SS 636 Actually Covers
SS 636 is Singapore’s real pipework and water-services code. Here’s what it covers, two commonly-confused SS numbers to avoid, and the full SG code map.