Stainless Steel Pipes
GB/T 14975 12Cr18Ni9
GB/T 14975 06Cr19Ni10
GB/T 14975 022Cr19Ni10
GB/T 14975 06Cr19Ni10N
GB/T 14975 06Cr19Ni9NbN
GB/T 14975 022Cr19Ni10N
GB/T 14975 06Cr23Ni13
GB/T 14975 06Cr25Ni20
GB/T 14975 015Cr20Ni18Mo6CuN
GB/T 14975 06Cr17Ni12Mo2
GB/T 14975 022Cr17Ni12Mo2
GB/T 14975 07Cr17Ni12Mo2
GB/T 14975 06Cr17Ni12Mo2Ti
GB/T 14975 06Cr17Ni12Mo2N
GB/T 14975 022Cr17Ni12Mo2N
GB/T 14975 06Cr18Ni12Mo2Cu2
GB/T 14975 022Cr18Ni14Mo2Cu2
GB/T 14975 015Cr21Ni26Mo5Cu2
GB/T 14975 06Cr19Ni13Mo3
GB/T 14975 022Cr19Ni13Mo3
GB/T 14975 06Cr18Ni11Ti
GB/T 14975 07Cr19Ni11Ti
GB/T 14975 06Cr18Ni11Nb
GB/T 14975 07Cr18Ni11Nb
GB/T 14975 16Cr25Ni20Si2
GB/T 14975 06Cr13Al
GB/T 14975 10Cr15
GB/T 14975 10Cr17
GB/T 14975 022Cr18Ti
GB/T 14975 019Cr19Mo2NbTi
GB/T 14975 06Cr13
GB/T 14975 12Cr13
GB/T 14975 20Cr13
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GB/T 14975 Seamless Stainless Steel Tubes for Structure
Standard: GB/T 14975
Equivalent Standards: ASTM A269, ASTM A511/A511M
Material: 12Cr18Ni9
Equivalent Material: 08Ch18N10, X5CrNi18-10, 1.4301
Chemistry Composition
C, %
Mn, %
P, %
S, %
Si, %
Cr, %
Ni, %
0.08 max
2.00 max
0.045 max
0.030 max
1.00 max
18.0-20.0
8.00-11.0
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
Hardness, HB
515 min
205 min
35 min
192 max
Outside Diameter & Tolerance
Hot rolled
Outside Diameter, mm
Tolerance, mm
OD≤101.6
+0.4/-0.8
101.6<OD≤190.5
+0.4/-1.2
190.5<OD≤228.6
+0.4/-1.6
Cold Drawn
Outside Diameter, mm
Tolerance, mm
OD<25.4
±0.10
25.4≤OD≤38.1
±0.15
38.1<OD<50.8
±0.20
50.8≤OD<63.5
±0.25
63.5≤OD<76.2
±0.30
76.2≤OD≤101.6
±0.38
101.6<OD≤190.5
+0.38/-0.64
190.5<OD≤228.6
+0.38/-1.14
Wall thickness & Tolerance
Hot rolled
Outside Diameter, mm
Tolerance, %

OD≤101.6, WT≤2.4

+40/-0
OD≤101.6, 2.4<WT≤3.8
+35/-0
OD≤101.6, 3.8<WT≤4.6
+33/-0
OD≤101.6, WT>4.6
+28/-0
OD>101.6, 2.4<WT≤3.8
+35/-0
OD>101.6, 3.8<WT≤4.6
+33/-0
OD>101.6, WT>4.6
+28/-0
Cold Drawn
Outside Diameter, mm
Tolerance, %
OD≤38.1
+20/-0
OD>38.1
+22/-0
GB/T 14975 specifies the classification, code, order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of seamless stainless steel tubes for structural use. GB/T 14975 is applicable to seamless stainless steel pipe for general structure or mechanical structure.
GB/T 14975规定了结构用不锈钢无缝钢管的分类和代号、订货内容、尺寸、外形、重量、技术要求、试验方法、检验规则、包装、标志和质量证明书。GB/T 14975适用于一般结构或机械结构用不锈钢无缝钢管。
Manufacture: tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
Heat Treatment: solution treatment.
Inspection & Test: chemistry composition, tensile test, hardeness test, flattening test, flaring test, NDT, surface inspection and dimension check.
Length: 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; 12000mm; and so on.
Max developed length: 32 meters, also U bending can be offered, each leg length can be 15.24 meters.
Keyword: High Pressure Steel Pipe, Boiler Steel Pipe, Heat Exchanger Steel Tube, ASME SA213, SA213TP304, ASTM A213
 
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