1. The female reducing coupling is made of 304 stainless steel, which is strong, not easy to rust, and has stronger corrosion resistance. 2. The reducing bell coupling adopts NPT thread, which has tighter sealing.
1. The female reducing coupling is made of 304 stainless steel, which is strong, not easy to rust, and has stronger corrosion resistance. 2. The reducing bell coupling adopts NPT thread, which has tighter sealing.
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