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ASTM
ASTM F2897-23a
Действует
Standard Specification for Tracking and Traceability Encoding System of Natural Gas Distribution Components (Pipe, Tubing, Fittings, Valves, and Appurtenances) — 23 стр.
ASTM F2968/F2968M-24
Действует
Standard Specification for Crosslinked Polyethylene (PEX) Pipe for Gas Distribution Applications — 11 стр.