API 5L X52 PSL2
Yield 360–530 MPa · tensile 460–760 MPa · X52N/X52Q selection.
Specifications
API 5L, API 5CT and alloy seamless pipe specifications
Compare the product routes HONGFENG quotes most often. API 5L line pipe, API 5CT casing, A335 alloy pipe and A213 boiler tube are specified separately because their service requirements are different.
Direct answer: HONGFENG quotes API 5L PSL1 and PSL2 seamless line pipe, API 5CT casing and tubing, A335 alloy pipe, A213 boiler tube, large-diameter seamless pipe, fittings and spools. For grade tables, CVN and test conditions, use the API 5L / API 5CT technical reference.
Oil and gas transmission
API 5L PSL1 and PSL2 seamless line pipe
API 5L line pipe transports oil, gas or water. PSL1 and PSL2 are different specification levels: PSL2 adds controlled chemistry, maximum yield and tensile limits, maximum yield-to-tensile ratio and a defined verification route. The required grade suffix, dimensions, CVN and coating are confirmed against the line design and purchase specification.
| Specification level | Grade range | Mechanical reference | Order data to confirm | Technical data |
|---|---|---|---|---|
| API 5L PSL1 | L175/A25 to L485/X70 | Minimum yield 175–485 MPa Minimum tensile 310–570 MPa | PSL, grade, OD, wall, length, CVN, coating and inspection | PSL1 tensile table → |
| API 5L PSL2 | L245/B to L555/X80Commonly quoted grades | Controlled minimum/maximum yield and tensile Maximum Rt0.5/Rm | Grade suffix, PSL2 chemistry, CVN conditions, NDT and documents | PSL2 tensile ranges → |
Product boundary: API 5L is not an interchangeable description for API 5CT casing. Line-pipe service, connection, marking and acceptance requirements must be stated before quotation.
Well construction
API 5CT casing and tubing
Casing stabilizes the wellbore, isolates formations and supports the wellhead; tubing is the inner production or injection conduit. HONGFENG checks grade, product specification level, weight, length range, coupling and thread requirement for each order.
| Reference grade | Yield strength (MPa) | Minimum tensile (MPa) | Application note |
|---|---|---|---|
| J55 | 379–552 | 517 | Common basic casing reference |
| K55 | 379–552 | 655 | Higher minimum tensile; confirm application and connection |
| N80 / N80-1 / N80Q | 552–758 | 689 | Heat-treatment suffix and service environment control suitability |
| L80 | 552–655 | 655 | Hardness and sour-service review required |
| P110 | 758–965 | 862 | High-strength casing reference; not a default sour-service grade |
Connections and length: STC, LTC and BTC are common API connections; premium or gas-tight threads follow the project. R1, R2 and R3 length ranges, couplings and thread specification must be included. Grade availability is confirmed per order.
Grade-specific pages
API 5L and API 5CT technical pages by grade
Use the grade page for mechanical limits, CVN, delivery-condition questions and the exact RFQ fields.
API 5L X60 PSL2
Yield 415–565 MPa · tensile 520–760 MPa · CVN and conditions.
API 5L X65 PSL2
Yield 450–600 MPa · tensile 535–760 MPa · X65Q reference.
API 5L X70 PSL2
Yield 485–635 MPa · tensile 570–760 MPa · PSL2 CVN.
API 5CT K55 casing
Yield 379–552 MPa · K55/J55 distinction · thread and length.
API 5CT N80 casing
Yield 552–758 MPa · N80-1/N80Q · service boundary.
API 5CT L80 casing
Yield 552–655 MPa · hardness and environmental-cracking review.
API 5CT P110 casing
Yield 758–965 MPa · high-strength casing · sour-service boundary.
Alloy steel seamless pipe
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.
Choosing between P91 and P92? Read P91 vs P92: which heat-resistant steel for a supercritical boiler? — chemistry, creep strength, service temperature, wall thickness and availability compared.
Choosing between P22 and P11? Read A335 P22 vs P11: choosing alloy pipe for main steam lines — service ceiling, wall thickness, temper embrittlement and availability compared.
| 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 |
Testing
PMI on every heat, ultrasonic testing of the body, hydrostatic test on request, hardness survey where the grade requires it.
Supply condition
Normalised and tempered, or as specified. Ends plain, bevelled or threaded to your requirement.
Documentation
EN 10204 3.1 mill certificate; the heat number on the certificate matches the marking on the pipe.
High-pressure boiler & heat-exchanger tube
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 |
Low-temperature steel 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.
Large-diameter seamless pipe
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 |
Butt-weld pipe fittings
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 |
Prefabricated piping spools & modules
Cutting, beveling, fitting-up, welding, heat treatment and non-destructive testing controlled in the workshop, then packed and marked for site installation.
Scope
Spools assembled to isometric drawings, including fittings, supports and temporary protection for transport.
Records
Weld map, welder qualification, heat-treatment chart and NDT report per spool, issued with the shipment.
Delivery
Spools numbered to your drawing, packed to protect bevels and coating, loaded with a matching packing list.
Alloy and seamless pipe — buyer questions
Which alloy steel grades can you supply?
ASTM A335 P5, P9, P11, P22, P91 and P92; ASTM A213 T5, T9, T11, T22 and T91 boiler and heat-exchanger tube; and EN 10216-2 13CrMo4-5 and 10CrMo9-10.
What is the minimum order?
A trial order of one 20 ft container is accepted. Project quantities are quoted with a rolling schedule, and standard sizes are held in stock.
What certificates and inspection are supplied?
EN 10204 3.1 mill certificates with heat numbers traceable to the pipe marking, PMI on every heat, ultrasonic testing of the body, hydrostatic test on request and third-party inspection by SGS, BV or TÜV.
Do you supply fittings and prefabricated spools?
Yes. A234 WP91, WP92, WP22 and WP11 butt-weld fittings, A105 and A182 F91/F22 flanges, and prefabricated piping spools built to isometric drawings.
What is the lead time?
Lead time depends on grade, size and quantity and is confirmed in the quotation. Stock sizes are available for immediate loading; non-standard sizes are produced on short lead time, with availability confirmed the same day.
Which API 5L and API 5CT products can HONGFENG quote?
HONGFENG quotes API 5L PSL1 and PSL2 seamless line pipe and API 5CT casing or tubing. Grade, delivery condition, dimensions, connection and inspection requirements are verified for each order before availability and price are confirmed.
What is the difference between PSL1 and PSL2 line pipe?
PSL1 specifies baseline line-pipe requirements. PSL2 adds controlled chemistry, maximum yield and tensile limits, a maximum yield-to-tensile ratio and a defined verification route. The grade suffix, impact requirements and purchase specification must be stated separately.
Not sure which grade you need?
Send the line parameters — medium, design pressure, design temperature and size — and we will recommend the grade and wall thickness, then quote it.