HEX BOLT DIN 933 /ISO 4017Â are fully threaded, have external coarse machine screw threads and, like other hex head screws, are used with both tapped holes and nuts. Their dimensions are similar to ISO 4017 and are available in Class 8.8, 10.9 and 12.9, a
Conventional two-way direct acting normally closed solenoid valve:â—The main body can be divided into brass forging and stainless steel frosting.â—Large diameter and large flow.
When the 10 Inch flanged gate valve closes, the sealing surface can be sealed only by the medium pressure, that is to say, the sealing surface of the gate can be pressed to the seat on the other side to ensure the tightness.
A grinding flap disc composed of plastic cover, emery cloth and glue. Zhongyan is a factory with more than 20 years manufacturing experiences, in order to guarantee the final quality of each flap disc, we take best raw materials such as fiberglass, sandpa
The multi-channel ultrasonic combination test can store the first wave related information in real time and interpret the acoustic parameters quickly and accurately, The whole combination test of embedded 3 or 4-pipe concrete piles is completed in one lif
We provide the Screen Mesh Rolls have advantage of no easy to remove sand, high efficiency, good anti-blocking performance, felxibility, good finish and so on.