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Seamless steel pipe for low temperature service

Date:2018-06-29    View:2004      Tag:Seamless steel pipe for low temperature service

This specification covers seamless and welded steel pipe for low temperature service.

Seamless service for cryogenic service is applicable to 16MnDG, 10MnDG, A333 Gr.1, Gr.3, Gr.1 of main standard GB / T18984-2003, ASTM / ASME A / SA333.


Sunny Steel provides a wide range of seamless steel tubes for cryogenic services.


The GB / T18984-2003 standard is applicable to low temperature pressure vessel pipes from -49 to -148 degrees F and seamless steel tubes with low temperature heat exchange tubes.


The ASTM / ASME A / SA-333 level allows cryogenic service to be below 150 degrees Fahrenheit. Materials are always provided under standardized conditions and the Charpy impact is tested to a specific temperature range to ensure that the required service temperature is met.


Low Temperature Steel Pipe Specifications & Grades

Chemical Composition(%)
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
<=0.30  - 0.40-1.06 0.025 0.025  -  -  -
A333 Gr.3 <=0.19 0.18-0.37 0.31-0.64 0.025 0.025 3.18-3.82  - <=0.12
<=0.30 >=0.10 0.29-1.06 0.025 0.025  -  -  -
Mechanical Properties
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
A333 Gr.1 >=205 >=380 >=35
A333 Gr.3 >=450 >=240 >=30
A333 Gr.6 >=455 >=250 >=30

Available Sizes:
  • O.D.: from 3/4 to 20 inch
  • W.T.: 0.102 to 4inch (2.6 to 100 mm)
  • Length: max 16000mm
Marking:
  • Pipes are supplied with marking according to standard and customer request.
  • Marking is paint on the ends of pipes.
  • The same data, as well as additional information per customer’s request, is indicated on the bundle’s tags.
Delivery:
  • Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
  • Weight of bundle – up to 5000 kg upon request of customer.
  • Each bundle is furnished with three tags.

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