多功能組合硫化球墨鑄鐵井蓋

Multifunctional combined vulcanized nodular cast iron manhole cover

多功能組合硫化球墨鑄鐵井蓋（圓形）

Multifunctional combined vulcanized ductile iron manhole cover (round)

多功能組合硫化球墨鑄鐵井蓋

Multifunctional combined vulcanized nodular cast iron manhole cover

多功能組合硫化球墨鑄鐵井蓋

Multifunctional combined vulcanized nodular cast iron manhole cover

多功能組合硫化球墨鑄鐵井蓋

Multifunctional combined vulcanized nodular cast iron manhole cover

多功能組合硫化球墨鑄鐵井蓋

Multifunctional combined vulcanized nodular cast iron manhole cover