Normalized and mass production of pipes for low temperature service

Recently, our company, Anhui Tianda, has completed the delivery of seamless steel pipes for low temperature service for a domestic large-scale petrochemical project, which marks that Anhui Tianda has realized normalized and mass production of pipes for low temperature service .
Pipes for low temperature service are used in temperature range from - 45 ℃ to -196 ℃ , generally divided into four levels of - 45 ℃, -70 ℃, -100 ℃, -196 ℃, corresponding to different material requirements. The materials used are 16MnDG, 10MnDG, 09DG, 09Mn2VDG, 06Ni3MoDG, ASTM GR.1~8, P215NL, P255QL, P265NL, 11MnNi5-3, STPL380, TPL450, STPL690 and other low carbon, high manganese and high nickel steel . And the standards apply to GB/T18984, ASTM A333, ASTM A334, EN10216-4, JIS G3460, ect.. Tipical specifications are 60x8, 168x11, 273x9, etc.. The Production is difficult, the inspection requirements is high, the requirement of impact toughness property at low temperature is also very high and the welding process is complex.
On the next step, the company will continue to develop pipes used at ultralow temperature from - 196 ℃ to 273 ℃.

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