Clean pipe tube with smooth surface, high precision tolerance, excellent inner surface roughness, inner surface Ra < 0.4 m characteristics. It is mainly used in semiconductor, medical catheter, food and beverage, pharmaceutical, ultra-high tube heat ex-changer, high purity gas and fluid piping systems and other industries with high cleanliness requirements. This type of pipe is manufactured in accordance with ASTM A269/A270 standard. For ultra-high cleanliness environment, the pipe shall be purged and packed with nitrogen in the clean room to meet the requirements. Bright annealed state (BA) or electric polished state (EP).
1)Standard  ASTM A269/ASTM A270/ ASME A270-BPE / EN10216-5/ EN10305-1/ISO 1127。 
2)Size    1/4”, 3/8”, 1/2”, 5/8”, 3/4”, 1”, 1-1/4”,1-1/2”