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By certification 
ASTM A106 Seamless Pressure Pipe (also known as ASME SA106 pipe) covers seamless carbon steel nominal wall pipe for high-temperature service. Suitable for bending, flanging and similar forming operations. ASTM A106 seamless pressure pipe is commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers, and ships where the piping must transport fluids and gases that exhibit higher temperatures and pressure levels.
NPS 1-1/2″ and under may be either hot finished or cold drawn. NPS 2″ and larger shall be hot finished unless otherwise specified.
Seamless carbon steel pipe for high-temperature service. We can produce these standard seamless steel pipes from OD1/4" to OD30", thickness SCH30, SCH40, SCH80, SCH160 and so on. Its products have been sold around China and exported to many countries regions in the world such as Southeast Asia, the Middle East, Europe and America
Production methods:
(1)From 1/8"-2", our pipes are cold drawning.
(2)From 2"-16", our pipes are hot rolling.
(3)Over 16", our pipes are hot expansion.
The normal length is 6 m and 12 m.
http://www.galaxy-steel.com/
