译：GB/T 4217-2001 Thermoplastics pipes for the conveyance of fluids—Nominal outside diameters and nominal pressures

译：GB/T 18473-2001 Electrical equipment of industrial machines—Serial data link for real-time communication between controls and drives

译：GB/T 18477-2001 Unplasticized polyvinyl chloride(PVC-U) double wall corrugated pipes for underground soil, waste and drainage

译：GB/T 6673-2001 Determination of length and width of plastics film and sheeting

译：GB/T 6672-2001 Plastics film and sheeting—Determination of thickness by mechanical scanning

译：GB/T 18475-2001 Thermoplastics materials for pipes and fittings for pressure applications—Classification and designation—Overall Service(design) coefficient

译：GB/T 6671-2001 Thermoplastics pipes-Determination of longitudinal reversion

译：GB/T 18474-2001 Pipes and fittings made of crosslinked polyethylene(PE-X)—Estimation of the degree of crosslinking by determination of the gel content

译：GB/T 18476-2001 Polyolefin pipes for the conveyance of fluids—Determination of resistance to crack propagation-Test method for slow crack growth on notched pipes(notch test)

译：GB/T 18472-2001 Test signals for digitally encoded color television system