SLS 705 : 1985 : Specification for materials for BIB - TAP and stop valve seat washers.
- Colombo SLSI 1985
- 11 p.
a621.646.5/.6:696.117
SRI LANLKA-STNADARDS
STANDARDS-SRI LANKA
a621.646.5/.6:696.117
SRI LANLKA-STNADARDS
STANDARDS-SRI LANKA