Line pipe
API 5L API 5L seamless line pipe
Oil, gas and water pipelines: Grade B to X70, PSL1 and PSL2.
Ø 168.3 × 7.11 mm View specifications
Products
Seamless pipe and tube
Ten product lines to American, European and Chinese standards, supplied to order from mills in China with mill test certificates to EN 10204 3.1.
Process & pressure pipe
ASTM A106 ASTM A106 seamless pipe
Carbon steel pipe for high-temperature service in plants and refineries.
Ø 60.3 × 3.91 mm View specifications
Process & pressure pipe
ASTM A53 ASTM A53 Type S seamless pipe
General-purpose pressure pipe for water, steam, air and gas.
Ø 33.4 × 3.38 mm View specifications
Low-temperature pipe
ASTM A333 ASTM A333 Grade 6 low-temperature pipe
Low-temperature carbon steel pipe, impact-tested at −45 °C.
Ø 114.3 × 6.02 mm View specifications
Process & pressure pipe
EN 10216-1 EN 10216-1 and DIN seamless pipe
European pressure pipe; legacy DIN grades St37.0, St44.0 and St52.0.
Ø 88.9 × 5 mm View specifications
Boiler tube
GB/T 3087 GB/T 3087 boiler tube
Grade 10 and 20 tubes for low- and medium-pressure boilers.
Ø 57 × 3.5 mm View specifications
Boiler tube
GB/T 9948 GB/T 9948 petrochemical tube
Furnace and heat-exchanger tubes for refineries and chemical plants.
Ø 89 × 6 mm View specifications
Heat-exchanger tube
ASTM A179 ASTM A179 heat-exchanger tube
Cold-drawn low-carbon tubes for heat exchangers and condensers.
Ø 25.4 × 2.11 mm View specifications
Boiler tube
ASTM A192 ASTM A192 boiler tube
Carbon steel boiler and superheater tubes for high pressure.
Ø 50.8 × 4.5 mm View specifications
Other standards
GOST · GB/T 8163 · EN Other seamless pipe standards
GB/T 8163, GOST 8731/8732, EN 10216-2, ASTM A210, JIS G3454 and more.
Ø 219.1 × 8.18 mm View specifications
Standards
| Standards | Applications | Grades | Manufacture | Dimensions | HS code |
|---|---|---|---|---|---|
| API 5L / ISO 3183 | Oil, gas and water pipelines: Grade B to X70, PSL1 and PSL2. | Gr.B, X42, X46, X52, X56, X60, X65, X70 | Hot-finished | ASME B36.10M | 7304.19 |
| ASTM A106 / ASME SA-106 | Carbon steel pipe for high-temperature service in plants and refineries. | Gr.A, Gr.B, Gr.C | Hot-finished or cold-drawn | ASME B36.10M | 7304.39, 7304.31 |
| ASTM A53 Type S / ASME SA-53 | General-purpose pressure pipe for water, steam, air and gas. | Gr.A, Gr.B | Hot-finished | ASME B36.10M | 7304.39 |
| ASTM A333 / ASME SA-333 | Low-temperature carbon steel pipe, impact-tested at −45 °C. | Gr.6 | Hot-finished or cold-drawn | ASME B36.10M | 7304.39, 7304.31 |
| EN 10216-1 / DIN 2448 | European pressure pipe; legacy DIN grades St37.0, St44.0 and St52.0. | P235TR1, P235TR2, P265TR1, P265TR2, St37.0, St44.0, St52.0 | Hot-finished or cold-drawn | EN 10220 | 7304.39, 7304.31 |
| GB/T 3087 | Grade 10 and 20 tubes for low- and medium-pressure boilers. | 10, 20 | Hot-finished or cold-drawn | GB/T 17395 | 7304.39, 7304.31 |
| GB/T 9948 | Furnace and heat-exchanger tubes for refineries and chemical plants. | 10, 20, 12CrMo, 15CrMo | Hot-finished or cold-drawn | GB/T 17395 | 7304.39, 7304.51, 7304.59 |
| ASTM A179 / ASME SA-179 | Cold-drawn low-carbon tubes for heat exchangers and condensers. | A179 | Cold-drawn | OD × WT | 7304.31 |
| ASTM A192 / ASME SA-192 | Carbon steel boiler and superheater tubes for high pressure. | A192 | Hot-finished or cold-drawn | OD × WT | 7304.39, 7304.31 |
| GB/T 8163 / GOST 8731 | GB/T 8163, GOST 8731/8732, EN 10216-2, ASTM A210, JIS G3454 and more. | — | Hot-finished or cold-drawn | OD × WT | 7304.39, 7304.31 |
How to choose a standard
Pipelines carrying oil, gas or water are usually specified to API 5L (ISO 3183). Choose PSL1 for ordinary service and PSL2 when the specification asks for impact testing, tighter chemistry or sour service (PSL2 with Annex H).
Plant piping for steam, hot water and hydrocarbons is usually ASTM A106 Grade B. Many mills certify the same pipe as A106 Grade B, A53 Grade B and API 5L Grade B at once. If your specification says ASTM A53, ask for Type S: A53 also covers welded pipe.
Cold service below about −29 °C needs impact-tested pipe such as ASTM A333 Grade 6, tested at −45 °C.
Boilers and heat exchangers use tubes ordered by outside diameter and wall thickness: ASTM A192 and GB/T 3087 for boilers, ASTM A179 for heat exchangers and condensers, and GB/T 9948 for refinery furnaces and petrochemical service.
European and older designs may name EN 10216-1 (P235TR1/TR2, P265TR1/TR2) or the legacy DIN 1629 grades St37.0, St44.0 and St52.0. St52.0 has no EN 10216-1 equivalent, so check the design before substituting.
Not sure which standard fits?
Send the design conditions or the line list. We will tell you which standards and grades suit it.
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