ASTM A333 Gr 6 Seamless PipeASTM A333 · ASME B36.19 · Manufacturer, stockist & exporter, India
SA-333 Gr 6 · Low-temperature carbon steel pipe
An ASTM A333 Gr 6 seamless pipe is pipe made without a weld seam, by piercing and drawing, made from ASTM A333 Gr 6 to ASTM A333 Gr 6. Seamless pipe is the choice for high pressure, high temperature and critical service where a weld seam is not wanted.
- ASTM A333
- ASME B36.19
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an ASTM A333 Gr 6 Seamless Pipe?
- What it is
- Pipe made without a weld seam, by piercing and drawing
- Material
- ASTM A333 Gr 6
- Dimensions
- ASME B36.19 · B36.10
- Grade
- ASTM A333 Gr 6
- Best at
- Cold-climate and refrigerated piping down to −45 °C
ASTM A333 Gr 6 Seamless Pipe Specification
| Product | ASTM A333 Gr 6 Seamless Pipe |
|---|---|
| Material standard | ASTM A333 Gr 6 |
| Dimensional standard | ASME B36.19 · B36.10 |
| Sizes | NPS ⅛" – 24", Sch 5S – XXS |
| Length | Random, double random or cut lengths |
| Testing | Chemical & mechanical per heat · NDT · impact where specified |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Seamless Pipe
Seamless pipe is the choice for high pressure, high temperature and critical service where a weld seam is not wanted.
- No weld seam
- NPS ⅛" – 24"
- Schedules 5S – XXS
More on choosing: Seamless pipe guide.
ASTM A333 Gr 6 Seamless Pipe: Why A333 Gr 6 for seamless pipes
Seamless pipe is the choice for high pressure, high temperature and critical service where a weld seam is not wanted. In ASTM A333 Gr 6, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Carbon steel tubulars carry most hydrocarbon and utility service. ASTM A333 Gr 6 is picked for cold-climate and refrigerated piping down to −45 °C. |
|---|---|
| Typical service | LNG & refrigeration — Cold process lines. |
| Welding to carbon steel | Matching carbon or low-alloy filler is used; joints to stainless need ER309L |
| Matching filler | E7018-1 / ER80S-Ni1 |
ASTM A333 Gr 6 Seamless Pipe Chemical Composition
| Element | Weight % |
|---|---|
| Carbon | 0.30 max |
| Manganese | 0.29 – 1.06 |
| Silicon | 0.10 min |
| Phosphorus | 0.025 max |
| Sulphur | 0.025 max |
ASTM A333 Gr 6 Seamless Pipe Mechanical Properties
| Minimum values | Value |
|---|---|
| Tensile strength | 415 MPa · 60 ksi |
| Yield strength 0.2% | 240 MPa · 35 ksi |
| Elongation | 30% |
| Charpy impact | Tested at −45 °C |
Full chemistry, properties and equivalents are on the ASTM A333 Gr 6 grade page.
Other ASTM A333 Gr 6 pipes & tubes
ASTM A333 Gr 6 Seamless Pipes for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiASTM A333 Gr 6 Seamless Pipe — questions buyers ask
Why choose seamless over welded pipe?
No longitudinal weld means uniform strength and corrosion resistance — preferred for pressure and critical service.
Can ASTM A333 Gr 6 seamless pipes be welded to carbon steel?
Yes — matching carbon or low-alloy filler is used; joints to stainless need ER309L.
Which standard covers ASTM A333 Gr 6 seamless pipes?
The material is ASTM A333 Gr 6; dimensions follow ASME B36.19 · B36.10. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a ASTM A333 Gr 6 seamless pipe?
The steel price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026