Steel pipe For Cryogenic Device

Steel pipe For Cryogenic Device

Steel pipes for cryogenic devices are specifically designed to handle extremely low temperatures and are commonly used in applications involving the storage and transportation of cryogenic fluids.

Cryogenic piping refers to systems that are used in a wide range of industrial applications that require extremely low temperatures, generally around -300°F (150°C) or lower.

Steel pipes for cryogenic devices are manufactured according to various standards and specifications, such as ASME SA-333M, GB/T18984, and ASTM A333. These standards ensure the pipes' suitability for low-temperature service and provide guidelines for their design and manufacturing.

Cyrogenic piping is also referred to as cold piping.

Implement specifications such as ASME SA-333M, GB/T18984. The seamless steel tubes are applied for low temperature pressure vessel pipeline and low temperature heat exchanger pipeline.

Usage Specification Steel Grade
Seamless and Welding Nominal Pipe used for Low Temperature ASME SA -333M Gr.3, Gr.6, Gr.8 and so on
Seamless Steel Pipe used for Low Temperature Pipeline GB/T18984 16MnDG, 06Ni3MoDG, 06Ni9MoDG and so on

ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service.

GB/T18984-2003 standard suitable for -49 to -148 0 F cryogenic pressure vessel piping, and low-temperature heat exchanger tubes seamless steel pipe.

Chemical compositions(%) of GB/T18984

Grade C Si Mn P(max) S Ni Mo V
16MnDG 0.12-0.20 0.20-0.55 1.20-1.60 0.025 0.025  -  -  -
10MnDG <=0.13 0.17-0.37 <=1.35 0.025 0.025  -  - <=0.07
09DG <=0.12 0.17-0.37 <=0.95 0.025 0.025  -  - <=0.07
09Mn2VDG <=0.12 0.17-0.37 <=1.85 0.025 0.025  -  - <=0.12
06Ni3MoDG <=0.08 0.17-0.37 <=0.85 0.025 0.025 2.5-3.7 0.15-0.30 <=0.05

Longitudinal mechanical properties of GB/T18984

Grade Tensile strength Lower yield strength(Rcl/Mpa) Elongation
Rm/Mpa W.T.<=16mm W.T.>16mm A/%
16MnDG 490-665 >=325 >=315 >=30
10MnDG >=400 >=240 >=35
09DG >=385 >=210 >=35
09Mn2VDG >=450 >=300 >=30
06Ni3MoDG >=455 >=250 >=30

(Not more than 25 mm) outside diameter and wall thickness of the steel pipe shall conform to GB/T 17395-1998 Table 1 provisions. According to the requirements of the demand side, the supply and demand sides consultation, produce the provisions specifications steel pipe.

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.