(l) Elbows should be long-radius elbows with a radius of curvature equal to 1.5 times the nominal diameter. Pipes that convey gas-solid or liquid-solid two-phase flow materials should use elbows with large radius of curvature.(2) For horizontal pipe reducer connections on corridors, if there are no

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For grooved pipe fittings, due to its material, cast iron is currently used, so anti-rust treatment is the key. At present, there are two main methods in this regard, which are also the more skilled processes used by many pipe fittings manufacturers. We will briefly introduce them.1. Spray painting.