UHP tube
Overview
UHP tube, Ultra High Purity tube, generally refers to BA tube, EP tube and MP tube, mainly used in pure gas and liquid pipeline system with high clean and ultra-pure requirements, to ensure the high purity and stability of transmission medium.
Due to semiconductors, integrated circuits, biological pharmacy, food and beverage, laboratory, fine chemical industry and automobile industry having strict requirements on the work environment of ultra clean, high reliability and resistance to corrosion and so on, so the pure medium (gas and liquid) pipeline generally emphasize surface roughness and cleanliness, to suppress the particle generation and accumulation retention.
In order to ensure weldability and welding quality, it is required to ensure that the pipe has high precision dimensional tolerance and stable chemical composition, so as to reduce the occurrence of flue gas and particles during welding, and improve the corrosion resistance and smoothness of welding parts. In a word, high purity pipelines should have both beautiful appearance (external purity) and excellent quality (internal purity).
External purity
It refers to not only bright external surface, but also a good inner surface roughness, which is to ensure that the pipeline system to transmission medium neutral, as well as excellent purge and cleaning performance. In order to ensure the quality and efficiency of automatic rail welding, the pipe is required to have high dimensional tolerance accuracy.
Inner purity
It refers to pure material. The UHP bright tube in the real sense has very strict requirements on the chemical composition, inner purity and performance of the material in addition to the beautiful inside and outside surface.
Process
Application
Used in semiconductor, liquid crystal industry, solar photovoltaic, biopharmaceutical, medical devices, precision instrumentation, integrated circuits, electronic chips, dust-free clean workshop, ultra-high purity gas, chemical system, WFI system, ultra-precision processing and other cutting-edge industries which request high-purity or ultra-high purity gas / fluid pipeline system.
(1) UHP gas system
(2) UHP liquid system
(3) DI UHP water system
(4) Hydrogen pipeline for hydrogen energy
(5) High level laboratory gas line
(6) Catheters
(7) Pipeline for beverage
(8) Food processing: aseptic tube sheet/tubular heat exchanger
(9) EGR pipeline of automobile: Gas transmission system, fuel injection system, high pressure oil rail pipeline
(10) Biological pharmacy: Such as pure water processor, tubular evaporator, steam generator and bioreactor, etc.
(11) Semiconductor/microelectronics：as transmission pipeline of UHP special gas in a clean room and gas source holder for LED, LCD, OLED, solar panel, etc.
Our features and advantages
| Item | Level |
|---|---|
| Internal surface roughness | ≥Ra0.0015 um |
| External surface roughness | ≥Ra0.10 um |
| OD size | ≥0.30 mm |
| ID size | ≥0.10 mm |
| OD tolerance | ≥±0.005 mm |
| ID tolerance | ≥±0.010 mm |
| WT tolerance | ≥±0.01 mm |
| Length tolerance | ≥±0.01 mm |
| Straightness | ≥0.20 mm/m |
| Concentricity | ≥0.01 mm |
| UHP cleaning | Being chemically cleaned Being passivated Rinsed by 18MΩ @ 25°C UHP water Flushed with 99.9995% UHP nitrogen |
| Traceability | Each tube is traceability identified |
| Clean packaging | Packed in a dust free clean room Filled with nitrogen Tube ends are wrapped with PA film Sealed with rubber caps Packed by double-layer anti-electrostatic polyethylene bags. |
| Test and inspection | Chemical composition Hardness Metallographic structure Tensile test ET Hydrostatic test Visual inspection Dimensional inspection Surface roughness Residual particle Moisture retention PMI EDS XPS AES SEM |