Cold rolled Seamless Stainless Steel Tubes 304 /316
Standard: GB/T 14975, ASTM A269 / A269M, ASTM A511 / A511 M
Material: S30408 S30403 304 304L TP304 TP304L 316 316L TP316 TP316L 12Cr18Ni9, 06Cr19Ni10, 022Cr19Ni10, 06Cr19Ni10N, 06Cr19Ni9NbN, 022Cr19Ni10N, 06Cr23Ni13, 06Cr25Ni20, 015Cr20Ni18Mo6CuN, 06Cr17Ni12Mo2, 022Cr17Ni12Mo2
Cold rolled Seamless Stainless Steel Tubes 304 /316
The Tolerance of Nominal Outer Diameter and Wall Thickness Unit:mm
| Cold Drawn(Roll) Steel Tube |
| Diamension |
Tolerance |
| Ordinary Level PA |
High Level PC |
|
Nominal Outer Diameter
D
|
<12.7 |
±0.30 |
±0.10 |
| 12.7~<38.1 |
±0.30 |
±0.15 |
| 38.1~<88.9 |
±0.40 |
±0.30 |
| 88.9~<139.7 |
±0.9%D |
±0.40 |
| 139.7~<203.2 |
±0.80 |
| 203.2~<219.1 |
±1.10 |
| 219.1~<323.9 |
±1.60 |
| ≥323.9 |
±0.5%D |
|
Nominal Wall Thinckness
S
|
All Wall Thickness |
+12.5%S
-10%S
|
±10%S |
Tolerance of Minimum Wall Thickness Unit:mm
| Production Method |
Diamension |
Tolerance |
| Ordinary Level PA |
High Level PC |
|
Hot Roll(Extrusion,Expansion)Steel Tube
W-H
|
Smin<15 |
+27.5% Smin
0
|
+25% Smin
0
|
| Smin≥15 |
+35% Smin
0
|
|
Cold Drawn(Roll) Steel Tube
W-C
|
All Wall Thickness |
+22% S
0
|
+20% S
0
|
Straightness:
The length of the steel tube should not be greater than 0.15% of the total length of the steel tube and no more than 12mm.
The bending degree of the steel pipe per meter should not be more than the following
—— WT ≤ 15mm, 1.5mm / m
—— WT > 15mm, 2.0mm / m
—— Thermal expansion pipe, 3.0mm / m
Cold rolled Seamless Stainless Steel Tubes 304 /316
