Cite
HARVARD Citation
Institution,, B. (2021) BS EN ISO 13844. Plastics piping systems. Elastomeric-sealing-ring-type socket joints for use with plastic pressure pipes. Test method for leak tightness under negative pressure, angular deflection and deformation.. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100125994528.0x000001