AWWA standard for resilient-seated gate valves for water supply service
American National Standards Institute., American Water Works Associationसाल:
1994
संस्करण:
Rev
प्रकाशन:
American Water Works Association
भाषा:
english
पृष्ठ:
36
श्रृंखला:
AWWA C509
फ़ाइल:
PDF, 1.63 MB
IPFS:
,
english, 1994