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■ Overview
GB/T5310 specifications grade Mo-alloy seamlss steel pipes and tubes 20MoG shall be done Normalized heat treatment with temperature within 890-950 Deg.C.Seamless steel tubes 20Mog owned min.yield strength at 220Mpa and Tensile strength within 415-665Mpa.Xinsteel also can offer ABS,BV,CCS,DNV-GL,LR classification society approved for these seamless steel pipes when using in vessels.
■ Full Data
Technical Requirements & Additional Services:
♦ Normalized Heat treatment at Temp.890-950 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Normalized Heat treatment at Temp.890-950 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Expansion test comply to GB/T 242
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
■ Techicals
►Mechnical property for 20MoG boiler steel pipes:
|
20MoG |
|
|
Yield strength (≥Mpa) |
220 |
|
Tensile strength (≥Mpa) |
415-665 |
►Chemical composition for 20MoG boiler steel pipes (Heat Analysis Max%)
|
Main chemical elements composition of 20MoG |
|||||
|
C |
Si |
Mn |
P |
S |
Cr |
|
0.15-0.25 |
0.17-0.37 |
0.40-0.80 |
0.025 |
0.015 |
0.30 |
|
Cu |
Ni |
Mo |
V |
Ti |
Zr |
|
0.20 |
0.30 |
0.44-0.65 |
0.08 |
- |
- |
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