
A106 B Mild Steel Seamless Pipes
ASTM A106 Gr B · ASTM A53 Gr B · API 5L Gr B · DIN St 45.8
Mild Steel Seamless Pipes in ready stock at our Madurai godowns, hot finished seamless, ½″ to 12″ NB · Sch 40 / 80 / 160. Band-saw cut to your sizes with mill test certificates on request.
I. Sizes & weights
Nominal weights at 7.85 g/cm³ · ½″ to 12″ NB · Sch 40 / 80 / 160| NB · OD × WT mm | kg / metre | kg / 6 m | |
|---|---|---|---|
| ½″ · 21.3 × 2.6 | 1.20 | 7.19 | |
| ¾″ · 26.9 × 2.6 | 1.56 | 9.35 | |
| 1″ · 33.7 × 3.2 | 2.41 | 14.4 | |
| 1½″ · 48.3 × 3.2 | 3.56 | 21.4 | |
| 2″ · 60.3 × 3.6 | 5.03 | 30.2 | |
| 3″ · 88.9 × 4 | 8.38 | 50.3 | |
| 4″ · 114.3 × 4.5 | 12.2 | 73.1 | |
| 6″ · 168.3 × 5.4 | 21.7 | 130.2 | |
| 8″ · 219.1 × 6.3 | 33.1 | 198.4 |
II. Chemical composition (% by weight)
| Element | C | Mn | Si | S | P |
|---|---|---|---|---|---|
| Min | – | 0.29 | 0.10 | – | – |
| Max | 0.30 | 1.06 | – | 0.035 | 0.035 |
Typical standard ranges. Every mill lot ships with its own test certificate on request.
III. Mechanical properties
- Tensile
- 415 MPa min
- Yield
- 240 MPa min
- Elongation
- 22% min
- Test
- Hydro tested
IV. Supply condition
- Condition
- Hot finished seamless
- Machinability
- Good
- Forms
- tube
- Cutting
- Band saw ±1 mm
- SKU
- SST-MSS-12
V. Weigh it, then request it.
Locked to A106 BA106 B · 7.85 g/cm³
W = π × (OD − WT) × WT × L × ρ ÷ 1,000,000 (with an inside diameter, WT = (OD − ID) ÷ 2) · ρ = 7.85 g/cm³ · rounded to 0.1 kg. Theoretical weight; actual mill weight can vary by ±2–3%.
Boiler, hydraulic and process lines
About A106 B
Can you cut A106 B to my sizes?
Yes. A106 B is band-saw cut to ±1 mm. Send piece sizes and quantities with your request; cutting is quoted with the material.
Is a mill test certificate provided with A106 B?
An MTC is supplied with mill material on request, traceable to the heat number.
What sizes are in stock?
½″ to 12″ NB · Sch 40 / 80 / 160. For large tonnage, message us to reserve material.
What are the equivalents of A106 B?
ASTM A106 Gr B, ASTM A53 Gr B, API 5L Gr B, DIN St 45.8. Equivalents are close matches; confirm against your drawing's specification.



