Tables below cover the products we quote most often. Anything not listed — non-standard wall thickness, special bevel, coated or cladded pipe — is quoted on the drawing.
Hot-finished and cold-drawn seamless pipe in chromium-molybdenum and martensitic heat-resistant grades, for main steam, hot reheat and high-pressure feedwater duty in power plants, and for high-temperature process lines in refineries and chemical plants.
| Grade | Standard | Typical OD (mm) | Typical wall (mm) | Service temperature |
|---|---|---|---|---|
| A335 P11 | ASTM A335 / ASME SA335 | 168.3 – 610 | 7 – 60 | Up to ~540 °C |
| A335 P22 | ASTM A335 / ASME SA335 | 168.3 – 610 | 8 – 70 | Up to ~565 °C |
| A335 P5 | ASTM A335 / ASME SA335 | 168.3 – 508 | 10 – 70 | High-temperature refining service |
| A335 P9 | ASTM A335 / ASME SA335 | 168.3 – 508 | 10 – 70 | Furnace and transfer lines |
| A335 P91 | ASTM A335 / ASME SA335 | 168.3 – 820 | 12 – 120 | Up to ~600 °C |
| A335 P92 | ASTM A335 / ASME SA335 | 168.3 – 820 | 14 – 130 | Ultra-supercritical, 600 °C+ |
| 13CrMo4-5 | EN 10216-2 | 168.3 – 508 | 4.5 – 60 | Boiler and steam service |
PMI on every heat, ultrasonic testing of the body, hydrostatic test on request, hardness survey where the grade requires it.
Normalised and tempered, or as specified. Ends plain, bevelled or threaded to your requirement.
EN 10204 3.1 mill certificate; the heat number on the certificate matches the marking on the pipe.
Tube for superheaters, reheaters, headers and heat exchangers, in ferritic and martensitic grades with controlled grain structure for long-term creep service.
| Grade | Standard | Typical OD (mm) | Typical wall (mm) | Application |
|---|---|---|---|---|
| A213 T11 | ASTM A213 | 25.4 – 168.3 | 2.1 – 18 | Superheater, reheater |
| A213 T22 | ASTM A213 | 25.4 – 168.3 | 2.1 – 22 | Superheater, steam line |
| A213 T91 | ASTM A213 | 31.8 – 168.3 | 3.5 – 25 | Header, superheater outlet |
| A213 T92 | ASTM A213 | 31.8 – 168.3 | 4.0 – 28 | Ultra-supercritical boiler |
| 13CrMo4-5 | EN 10216-2 | 25 – 168.3 | 2.6 – 20 | Boiler and steam pipe |
Seamless pipe with guaranteed impact toughness at low temperature, for cold-service process lines and equipment.
| Grade | Standard | Typical OD (mm) | Impact test | Service |
|---|---|---|---|---|
| A333 Gr.3 | ASTM A333 | 21.3 – 610 | −100 °C | Low-temperature process |
| A333 Gr.6 | ASTM A333 | 21.3 – 610 | −45 °C | Cold service piping |
| A333 Gr.8 | ASTM A333 | 21.3 – 610 | −195 °C | Cryogenic / LNG-adjacent |
Impact test temperature and acceptance criteria are confirmed against your project specification before the order is placed.
Heavy-wall large-diameter seamless pipe up to OD 1420 mm for power, chemical and high-pressure process service, cut and bevelled to your drawings.
| Item | Range | Notes |
|---|---|---|
| Outside diameter | Up to 1420 mm | Larger sizes quoted on request |
| Wall thickness | Heavy wall, to specification | Confirmed against grade and diameter |
| Length | Fixed length or cut to order | Bevel and end preparation per drawing |
| Marking | Grade, size, wall, heat number | Bundle tag plus shipping marks |
Fittings matched to the pipe grade, so the whole line carries one material story from the heat number to the mill certificate.
| Type | Standard / grade | Size range | Notes |
|---|---|---|---|
| Elbows 45° / 90° / 180° | A234 WP91 / WP92 / WP22 / WP11 | DN 15 – DN 1200 | Long radius and short radius |
| Tees (equal / reducing) | A234 series | DN 15 – DN 1200 | Hot-formed or welded |
| Reducers (concentric / eccentric) | A234 series | DN 20 – DN 1200 | To drawing |
| Caps and bends | A234 / A420 | DN 15 – DN 900 | Any bend angle to drawing |
| Flanges | A105 / A182 F91 / F22 | DN 15 – DN 1200 | WN, SO, BL, SW, THD per standard |
Cutting, beveling, fitting-up, welding, heat treatment and non-destructive testing controlled in the workshop, then packed and marked for site installation.
Spools assembled to isometric drawings, including fittings, supports and temporary protection for transport.
Weld map, welder qualification, heat-treatment chart and NDT report per spool, issued with the shipment.
Spools numbered to your drawing, packed to protect bevels and coating, loaded with a matching packing list.
Send the line parameters — medium, design pressure, design temperature and size — and we will recommend the grade and wall thickness, then quote it.