... SCH120, SCH160Surface treatmentblack paint, varnish, rust-proof oil, and hot-dipped galvanizedApplicationChemical industry, petroleum industry, construction industry, ... 266 workers, fixed assets 32 million Yuan, and registered capital 23 million Yuan, we don"t ... reducers, tees, flanges, big elbows,socket pipe, concrete pumps and pipes, concrete pipeline, various groud pipes, horizontal tubes, straight ...