Pressure pipe

Pressure pipe refers to all pipes that can withstand the internal pressure or external pressure, regardless of the tube within the medium.

Pressure pipeline is part of the pipeline, the pipeline is used for the transmission, distribution, mixing, separation, emissions, measurement, control and stop fluid flow, connected by pipes, pipe fittings, flanges, bolts, gaskets, valves, and other constituent elements or compression assembly consisting of assembly of the member and the support member.

Pressure pipeline characteristics:
  1. Pressure vessel is a single device, pressure piping is a system, interrelated and influence each other - inter-related whole body, and the slenderness ratio, vulnerable to instability, the force is more complex;
  2. Design of the pressure pipes in addition to considering the conventional factors (temperature, pressure, fluid properties, etc.), but also consider the flexible pipe, vibration and the support, and other factors;
  3. Pipe pressure fluid flow state complex while the cushion is small, the frequency of the changes in working conditions is higher than the pressure vessel, such as temperature, pressure, fluid state, snow, and so may affect its force;
  4. Constituent elements of pipeline, pipe supports and hangers, pipe insulation layer, each have their own characteristics and technical requirements, material selection and assembly difficulties;
  5. possible leak points on the pipeline more than the pressure vessel (only one valve usually there are five);
  6. Piping layout, installation and inspection of pressure vessels there is a great difference.

Seamless pipe Specification, standard and identification

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.