The greater the pressure of the conveying medium, the thicker the pipe thickness, and the generally higher pipe requirements.
Medium pressure more than 1.6MPa, the choice of seamless steel tubes and non-ferrous metal tubes. High pressures, such as ammonia, urea, and methanol production, and some pipe medium pressures up to 32 MPa, are common choices for 20 steel or 15 mnv high pressure seamless steel pipe materials. When the pressure in the vacuum equipment is greater than 10 MPa, the oxygen tube is generally copper and brass.
However, the pressure of the cast iron pipe under medium pressure should not exceed 1.0 MPa. Non-metallic pipe can withstand medium pressure, with non-metallic materials, such as rigid PVC pipe, use pressure less than or equal to 1.6MPa; reinforced polypropylene pipe, pressure less than or equal to 1.0MPa use; ABS pipe, use pressure less than or equal to 0.6MPa . under these circumstances,
under these circumstances,
Water supply pipes, when the water pressure is less than 1.0MPa, the material welded steel pipe
; when the water pressure is greater than 2.5MPa, carbon steel seamless steel pipe
is generally used.