"Standard dimension ratio (SDR)" means the ratio of outside pipe diameter to pipe wall thickness, as used in the pipe manufacturing industry.
N.H. Admin. Code § Env-Wq 702.32
(See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06
"Standard dimension ratio (SDR)" means the ratio of outside pipe diameter to pipe wall thickness, as used in the pipe manufacturing industry.
N.H. Admin. Code § Env-Wq 702.32
(See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06