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เอกสารมาตรฐาน
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ASTM
C1540-20
Standard Specification for Heavy-Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings
2020
7
ASTM Vol.01.02 (2023)
This specification covers the evaluation of the performance of heavy-duty shielded couplings to join hubless cast iron soil pipe and fittings.
Couplings covered by this standard shall have nominal dimensions as found in Table 1 and Fig. 1
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