Company into a tube and shell heat exchanger, working pressure is 3 kilograms, can according to the provisions of the customs formalities for tax exemption, but customs has a regulation: high pressure vessel cannot do duty-free, now I can provide the customs requirements 3 kilograms of pressure for high pressure of national standard, which is the national standard, please?
TSG R0004-2009 type pressure vessel safety technology and supervision code Annex A The design of the pressure vessel pressure (p) is divided into low pressure, medium pressure, high pressure and ultrahigh pressure of four classes: (1) low pressure: L code, 0.1 MPa acuities were p < 1.6 MPa (2) the intermediate pressure: M code, 1.6 MPa acuities were p < 10.0 MPa (3) high pressure: code H, 10.0 MPa acuities were p < 100.0 MPa (4) the ultrahigh pressure: code U, p p 100.0 MPa Note: (1 kg pressure equal to 0.1 MPa) checked our design can know is that level
TSG R0004-2009 type pressure vessel safety technology and supervision code Annex A A2: stress hierarchy 3) high pressure (code H), 10 mpa < = p < 100 mpa P as the design pressure, design pressure is greater than or equal to the maximum allowable working pressure So 3 kg work pressure of the pressure vessel for high pressure vessel
"Should the rules" The design of the pressure vessel pressure (p) is divided into low pressure, medium pressure, high pressure and ultrahigh pressure of four classes: (1) low pressure: L code, 0.1 MPa acuities were p < 1.6 MPa (2) the intermediate pressure: M code, 1.6 MPa acuities were p < 10.0 MPa (3) high pressure: code H, 10.0 MPa acuities were p < 100.0 MPa (4) high pressure: code U, p p 100.0 MPa
