Definition: Is a kind of seamless steel pipe, alloy pipe is divided into structure with seamless tube and high pressure heat resistant alloy tube.Main difference in the alloy tube production standards and its industry, is the alloy pipe annealing and tempering change its mechanical properties.Its performance is higher than the average seamless steel tube using mercurial, chemical composition contains Cr alloy tube is more, high temperature resistant, good low temperature resistance, corrosion resistance performance.
Material:15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、10Cr9Mo1VNb、SA210A1、SA210C、SA213 T11、SA213 T12、SA213 T22、SA213 T23、SA213 T91、SA213 T92、ST45.8/Ⅲ、15Mo3、13CrMo44、10CrMo910etc.
ASTM A335 P2,ASTM A355 P12,ASTM A335 P11,ASTM A335 P22,ASTM A335 P5 ,
ASTM A335 P9,ASTM A213 T2,ASTM A213 T12,ASTM A213 T11, ASTM A213 T22,
ASTM A200 T5,ASTM A213 T9,
Theoretical Weight : （OD - wall thickness）* wall thickness*0.02483 = the weight of per meter
standard:GB/T423T - 92, ASTM, JIS, etc.
Designation Symbol Description
1，Cold finished (hard)BK【+C】Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
2，Cold finished (Soft)BKW【+LC】The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
3，Cold finished and stress-relieved BKS【+SR】Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
4，Annealed GBK【+A】The last Cold forming process is followed by annealing in a controlled atmosphere.
5，Normalized NBK【+N】The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
Surface treatment:
1) Bared
2) Black Painted or other colors painted(varnish coating)
3) Galvanized
4) With Oiled
5) 3 PE, FBE, corrosion resistant coating
Technique
Electronic Resistance Welded (ERW )
Electronic Fusion Welded (EFW)
Double Submerged Arc Welded (DSAW)
Package
1) Bundle,
2) In Bulk
3) Bags
4) Clients' Requirements
End protector
1) Plastic pipe cap
2) Iron protector
Ends
1) Plain
2) Beveled
3) Thread with Coupling or cap
4)Bending
Mechanical properties
|
Standard
|
Grade
|
Tensile strength（MPa）
|
Yield strength（MPa）
|
Elongation（%）
|
Hardness
|
|
GB3087
|
10
|
335～475
|
≥195
|
≥24
|
/
|
|
20
|
410～550
|
≥245
|
≥20
|
/
|
|
|
GB5310
|
20G
|
410～550
|
≥245
|
≥24
|
/
|
|
20MnG
|
≥415
|
≥240
|
≥22
|
/
|
|
|
25MnG
|
≥485
|
≥275
|
≥20
|
/
|
|
|
15CrMoG
|
440～640
|
≥235
|
≥21
|
/
|
|
|
12Cr2MoG
|
450～600
|
≥280
|
≥20
|
/
|
|
|
12Cr1MoVG
|
470～640
|
≥255
|
≥21
|
/
|
|
|
12Cr2MoWVTiB
|
540～735
|
≥345
|
≥18
|
/
|
|
|
10Cr9Mo1VNb
|
≥585
|
≥415
|
≥20
|
/
|
|
|
ASME SA210
|
SA210A-1
|
≥415
|
≥255
|
≥30
|
≤143HB
|
|
SA210C
|
≥485
|
≥275
|
≥30
|
≤179HB
|
|
|
ASME SA213
|
SA213 T11
|
≥415
|
≥205
|
≥30
|
≤163HB
|
|
SA213 T12
|
≥415
|
≥220
|
≥30
|
≤163HB
|
|
|
SA213 T22
|
≥415
|
≥205
|
≥30
|
≤163HB
|
|
|
SA213 T23
|
≥510
|
≥400
|
≥20
|
≤220HB
|
|
|
SA213 T91
|
≥585
|
≥415
|
≥20
|
≤250HB
|
|
|
SA213 T92
|
≥620
|
≥440
|
≥20
|
≤250HB
|
|
|
DIN17175
|
ST45.8/Ⅲ
|
410～530
|
≥255
|
≥21
|
/
|
|
15Mo3
|
450～600
|
≥270
|
≥22
|
/
|
|
|
13CrMo44
|
440～590
|
≥290
|
≥22
|
/
|
|
|
10CrMo910
|
480～630
|
≥280
|
≥20
|
/
|
|
Chemical composition
|
Standard
|
Grade
|
Chemical composition（%）
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
Cu
|
Ni
|
V
|
Al
|
W
|
Ti
|
Nb
|
N
|
|
|
GB3087
|
10
|
0.07～0.13
|
0.17～0.37
|
0.38～0.65
|
≤0.030
|
≤0.030
|
0.3～0.65
|
/
|
≤0.25
|
≤0.30
|
/
|
/
|
|
|
|
|
20
|
0.17～0.23
|
0.17～0.37
|
0.38～0.65
|
≤0.030
|
≤0.030
|
0.3～0.65
|
/
|
≤0.25
|
≤0.30
|
/
|
/
|
|
|
|
|
|
GB5310
|
20G
|
0.17～0.24
|
0.17～0.37
|
0.35～0.65
|
≤0.030
|
≤0.030
|
≤0.25
|
≤0.15
|
≤0.20
|
≤0.25
|
≤0.08
|
|
|
|
|
|
20MnG
|
0.17～0.24
|
0.17～0.37
|
0.70～1.00
|
≤0.030
|
≤0.030
|
≤0.25
|
≤0.15
|
≤0.20
|
≤0.25
|
≤0.08
|
|
|
|
|
|
|
25MnG
|
0.18～0.24
|
0.17～0.37
|
0.80～1.10
|
≤0.030
|
≤0.030
|
≤0.25
|
≤0.15
|
≤0.20
|
≤0.25
|
≤0.08
|
|
|
|
|
|
|
15CrMo
|
0.12～0.18
|
0.17～0.37
|
0.40～0.70
|
≤0.030
|
≤0.030
|
0.80～1.10
|
0.40～0.55
|
≤0.20
|
≤0.30
|
|
|
|
|
|
|
|
12Cr2MoG
|
0.08～0.15
|
≤0.50
|
0.40～0.70
|
≤0.030
|
≤0.030
|
2.00～2.50
|
0.90～1.20
|
≤0.20
|
≤0.30
|
|
|
|
|
|
|
|
12Cr1MoV
|
0.08～0.15
|
0.17～0.37
|
0.40～0.70
|
≤0.030
|
≤0.030
|
0.90～1.20
|
0.25～0.35
|
≤0.20
|
≤0.30
|
0.15～0.30
|
|
|
|
|
|
|
12Cr2MoWVTiB
|
0.08～0.15
|
0.45～0.75
|
0.45～0.65
|
≤0.030
|
≤0.030
|
1.60～2.10
|
0.50～0.65
|
≤0.20
|
≤0.30
|
0.28～0.42
|
|
0.30～0.55
|
0.08～0.15
|
B 0.002～0.008
|
|
|
10Cr9Mo1VNb
|
0.08～0.12
|
0.20～0.50
|
0.30～0.60
|
≤0.020
|
≤0.010
|
8.00～9.50
|
0.85～1.05
|
≤0.20
|
≤0.40
|
0.18～0.25
|
≤0.015
|
|
|
0.06～0.10
|
0.03～0.07
|
|
ASME SA210
|
SA210A-1
|
0.13～0.19
|
≥0.1
|
0.45～0.65
|
≤0.030
|
≤0.030
|
|
|
|
|
|
|
|
|
|
|
SA210C
|
0.18～0.24
|
≥0.1
|
0.80～1.10
|
≤0.030
|
≤0.030
|
|
|
|
|
|
|
|
|
|
|
|
ASME SA213
|
SA213 T11
|
0.05～0.15
|
0.50～1.0
|
0.30～0.60
|
≤0.030
|
≤0.030
|
1.00～1.50
|
0.50～1.00
|
|
|
|
|
|
|
|
|
SA213 T12
|
0.05～0.15
|
≤0.50
|
0.30～0.61
|
≤0.030
|
≤0.030
|
0.80～1.25
|
0.44～0.65
|
|
|
|
|
|
|
|
|
|
SA213 T22
|
0.05～0.15
|
≤0.50
|
0.30～0.60
|
≤0.030
|
≤0.010
|
1.90～2.60
|
0.87～1.13
|
|
|
|
|
|
|
|
|
|
SA213 T23
|
0.04～0.10
|
≤0.50
|
0.10～0.60
|
≤0.030
|
≤0.030
|
1.90～2.60
|
0.05～0.30
|
|
|
|
≤0.030
|
1.45～1.75
|
B 0.0005～0.006
|
0.02～0.08
|
≤0.040
|
|
SA213 T91
|
0.08～0.12
|
0.20～0.50
|
0.30～0.60
|
≤0.020
|
≤0.010
|
8.00～9.50
|
0.85～1.05
|
|
≤0.40
|
0.18～0.25
|
≤0.015
|
|
|
0.06～0.10
|
0.03～0.07
|
|
SA213 T92
|
0.07～0.13
|
≤0.50
|
0.30～0.60
|
≤0.020
|
≤0.010
|
8.50～9.50
|
0.30～0.60
|
|
≤0.40
|
0.15～0.25
|
≤0.015
|
1.50～2.00
|
B 0.001～0.006
|
0.04～0.09
|
0.03～0.07
|
|
DIN 17175
|
ST45.8/Ⅲ
|
≤0.21
|
0.10～0.35
|
0.40～1.20
|
≤0.040
|
≤0.040
|
|
|
|
|
|
|
|
|
|
|
15Mo3
|
0.12～0.20
|
0.10～0.35
|
0.40～0.80
|
≤0.035
|
≤0.035
|
|
0.25～0.35
|
|
|
|
|
|
|
|
|
|
13CrMo44
|
0.10～0.18
|
0.10～0.35
|
0.40～0.70
|
≤0.035
|
≤0.035
|
0.70～1.10
|
0.45～0.65
|
|
|
|
|
|
|
|
|
|
10CrMo910
|
0.08～0.15
|
≤0.50
|
0.30～0.70
|
≤0.025
|
≤0.020
|
2.00～2.50
|
0.90～1.10
|
≤0.30
|
≤0.30
|
|
≤0.015
|
|
|
|
|
