The structure and principle of jty-1 type air reduction pressure valve for double wind pipe of installation in the raising speed locomotive are described.
The invention relates to a double helical ribbon pipetype reactor, which is particularly suitable for preparing high-performance polyacrylonitrile-based carbon fiber spinning solution.
本发明涉及一种双螺带管式反应器，尤其适用于高性能聚丙烯腈基碳纤维纺丝液制备。
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The double radius hole type was commonly adopted for the forming machine of straight weld pipe with vertical roller in domestic present.