Chemical equipment seamless steel pipe:
1. Mainly used for conveying high temperature and high pressure fluid pipe fertilizer equipment. Representative materials for 20,16Mn, 12C rMo, and so on.
2. For the operating temperature of -40 ~ 400 ℃, working pressure of high-quality carbon structural steel and alloy steel 10 ~ 30Ma of chemical equipment and pipe seamless steel tubes.
3. mainly used for mine air pressure, drainage, gas discharge axis with straight seam welded steel pipe. The representative of material Q235A, B grade steel. GB / T14980-1994 (low pressure fluid with large-diameter welded steel pipe).
4. Mainly used for conveying water, sewage, gas, air, and other low pressure steam heating fluid and other uses. The representative of material Q235A grade steel.
5. The use of steel boiler tubes
(1) high-quality carbon structural steel with steel 20G, 20MnG, 25MnG.
(2) structural steel alloy steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB like.
(3) there is rust resistant steel used 1Cr18Ni9,1Cr18Ni11Nb boiler tubes in addition to chemical composition and mechanical properties, water pressure test done by the root, to be flaring, flattening test. Steel to heat treatment delivery.
6. physical performance test
GB3087-2008 “low and medium pressure boiler seamless pipe” requirement. Tensile testing according to GB / T228-87, water pressure test according GB / T241-90, flattening test according GB / T246-97, flaring test according GB / T242-97, cold bending test according to GB244-97.