bolted bonnet造句怎么写

2、MATERIAL AND SERVICE– Cast steel bolted bonnet valves are available in a variety of body/ bonnet materials and trims.

1、Pacific cast steel bolted bonnet valves are supplied in a wide range of body/ bonnet materials and trims.

3、"Valves to be Class 125 manufactured in accordance with MSS-SP70 (gate) or MSS-SP85 (globe/angle), flanged, bolted bonnet, OS&Y, iron body, bronze trimmed, with body and bonnet conforming to ASTM A 126 class B cast iron. Packing and gaskets to be non-asbestos."