RS ISO 21138-3: 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 3: PIPES AND FITTINGS WITH NON-SMOOTH
EXTERNAL
57,000.00
33
1,881,000.00
2
Rwanda Standards
RS ISO 21401: 2018 TOURISM AND RELATED SERVICES — SUSTAINABILITY MANAGEMENT SYSTEM FOR ACCOMMODATION ESTABLISHMENTS — REQUIREMENTS
