Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.

采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。

youdao

Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.

采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。

youdao