Standards & Specs

What causes galvanic corrosion in marine pipe couplings, the MIL-STD-889 compatibility rule, and how insulation kits stop early housing failure.

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.

What ASTM A536 ductile iron and A193/A194 bolting grades actually specify, and why the coating matters as much as the grade for coastal Singapore service.

AWWA C219 covers bolted sleeve-type couplings on plain-end pipe; C606 covers grooved joints. Here’s which one names your product and which is a no-play.

How NFPA 13, SCDF Fire Code 2023, and the UL 213 / FM 1920 listing regime decide which couplings can go on a Singapore sprinkler riser.

Industrial gas piping Singapore: why cryogenic and high-purity gas lines are welded-only, and where mechanical couplings fit on the utility side.

Pharmaceutical plant pipework in Singapore’s Tuas cluster explained — the ASME BPE hygienic boundary, and where couplings serve facility utilities.

Semiconductor fab piping in Singapore explained — where couplings serve facility utilities, and where SEMI-standard process piping rules them out.

A coupling can pass every structural standard and still be blocked from potable water. The two-layer rule behind ISO, JIS, BS and Singapore SS coupling standards.

A steel-pipe mechanical coupling will not correctly seal or grip HDPE. Two reasons why — PE’s own OD series and the mandatory stainless liner — and what to order instead.