difference pressure piping for flowmeter的用法和样例：
- High oil pressure pipe for fuel injector
- A pipe for carrying off water or sewage.
- Injection-moulded thermoplastics fittings for pressure piping systems.
英文标题： (Plastics piping and ducting systems.
- For a long time special observations were made of these gases under different pressure and temperature.
- Specification for Fiberglass Sewer and Industrial Pressure Pipe (08.