The higher the pressure of the transmission medium is, the thicker the pipeline thickness is, and the higher the requirement of the pipeline material is.


Medium pressure above 1.6 MPa, seamless steel pipe or non-ferrous metal pipe can be selected. High pressure, such as ammonia, urea and methanol production, as well as some pipeline media pressure up to 32 MPa, generally choose 20 steel or 15MnV high pressure seamless steel pipe materials. Brass and brass are commonly used when the pressure of tubes and oxygen pipes on vacuum equipment is greater than 10 MPa.


If the medium pressure is less than 1.6 MPa, welded steel pipe, cast iron pipe or non-metallic pipe can be considered. However, cast iron pipes subjected to medium pressure shall not be greater than 1.0 MPa. Non-metallic pipes can withstand medium pressure, but non-metallic materials, such as rigid PVC pipes, use pressure less than or equal to 1.6 MPa; reinforced polypropylene pipes, use pressure less than or equal to 1.0 MPa; ABS pipes, use pressure less than or equal to 0.6 MPa. Under these circumstances,
Under these circumstances,


For water pipes, when the water pressure is less than 1.0 MPa, the material is welded steel pipe; when the water pressure is more than 2.5 MPa, carbon seamless steel pipe is generally used.