• May 4, 2026 jis k 1474 standard ionally for its rigorous quality requirements. It often aligns with or complements standards like ISO 4437 and ASTM F714 for polyethylene pipes, promoting compatibility across markets. Are there recent updates or revisions to the JIS K 1474 standard? Yes, the JIS K 1474 standard has bee By Boyd Jast-Towne