RS ISO 1726-2: 2007 ROAD VEHICLES — MECHANICAL COUPLINGS BETWEEN TRACTORS AND SEMI- TRAILERS — PART 2: INTERCHANGEABILITY BETWEEN LOW-COUPLING TRACTORS AND HIGH-VOLUME SEMI-TRAILERS
RS ISO 21138-1: 2020 PLASTICS PIPING SYSTEMS FOR NON-PRESSURE
UNDERGROUND DRAINAGE AND SEWERAGE —
STRUCTURED-WALL PIPING SYSTEMS OF
UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U),
POLYPROPYLENE (PP) AND POLYETHYLENE (PE) —
PART 1: MATERIAL SPECIFICATION AND PERFORMANCE
CRIT
