As a leading distributor of high-performance piping solutions, Excellent Overseas specializes in ASTM A335 Grade P12 Seamless Alloy Steel pipes manufactured by top-tier global mills such as Tenaris, JFE, Nippon Steel, and MSL.
Table of Content
Supply Range & Dimensions
Outer Diameter (OD)1/2" NB to 36" NB
Schedule (WT)SCH 20 up to XXS (max 250mm WT)
LengthSingle Random, Double Random & Custom Length
Grade SpecificationGrade P12 (UNS K11562)
Alloy Make-up1% Chrome (Cr), 0.5% Moly (Mo)
Manufacturing FormSeamless Only (Extrusion / Piercing)
Equivalent StandardsEN 10216-2, DIN 17175 13CrMo44
TestingHydrostatic, NDT (Eddy Current / UT)
CertificationsEN 10204 3.1 / 3.2, IBR, NACE MR0175
Surface FinishBare, Black Oil, Anti-rust Paint
Value AddedBeveling, Machining, Bending
Export AreasUSA, Saudi Arabia, Kuwait, Europe
Manufacturers in Stock
Tenaris
JFE Steel
Nippon Steel
MSL
ArcelorMittal
Benteler
Tubos Reunidos
Hyundai Steel
Chemical Composition (ASTM A335 Grade P12)
| Element | Symbol | Composition (%) |
|---|---|---|
| Carbon | C | 0.05 - 0.15 |
| Manganese | Mn | 0.30 - 0.61 |
| Phosphorus | P | 0.025 max |
| Sulfur | S | 0.025 max |
| Silicon | Si | 0.50 max |
| Chromium | Cr | 0.80 - 1.25 |
| Molybdenum | Mo | 0.44 - 0.65 |
Mechanical Properties
| Property | Metric Units | Imperial Units |
|---|---|---|
| Tensile Strength (Min) | 415 MPa | 60,000 psi |
| Yield Strength (Min) | 220 MPa | 32,000 psi |
| Elongation (Longitudinal) | 30% (min) | |
Heat Treatment Requirements
| Grade | Heat Treatment Type | Minimum Temperature |
|---|---|---|
| Grade P12 | Full or Isothermal Anneal OR Normalize and Temper |
Tempering at 1200°F [650°C] min |
ASTM A335 P12 Applications
Superheated Steam Piping
Thermal Power Stations
Petrochemical Processing
Boiler Superheater & Reheaters
Hydrocarbon Processing
Transit Timing & Delivery
| Country | Destination Port | Sea Freight Timing | Air Freight Timing |
|---|---|---|---|
 Saudi Arabia | Dammam / Jubail | 10–14 Days | 1–2 Days |
 UAE | Jebel Ali | 4–6 Days | 1 Day |
 United States | Houston | 38–45 Days | 4–5 Days |
 Germany | Hamburg | 30–34 Days | 2–3 Days |
 Singapore | Port of Singapore | 12–16 Days | 1–2 Days |
Process of Manufacturing
A335 P12 pipes are manufactured via hot-finishing or cold-drawing from solid alloy billets, creating a seamless, uniform pipe wall engineered to handle severe high-pressure thermal stresses.
Coating Material & Protection
Anti-Rust Varnish / Oil
3LPE / 3LPP Coated
FBE Coated
ASTM A335 P12 vs ASTM A335 P11
ASTM A335 P12
- • Nominal 1.0% Chromium and 0.5% Molybdenum.
- • Maximum Silicon restricted to 0.50% max.
- • Slightly higher minimum yield strength requirement (32,000 psi / 220 MPa).
- • Widely selected in European power design equivalents (13CrMo44).
ASTM A335 P11
- • Nominal 1.25% Chromium and 0.5% Molybdenum.
- • Higher Silicon range (0.50% to 1.00%) for scale resistance.
- • Minimum yield strength standard at 30,000 psi / 205 MPa.
- • More universally stocked and used worldwide for general boiler lines.
Types of ASTM A335 P12 Pipes
Grade P12 Seamless Pipe
P12 Alloy Boiler Tube
P12 High Temp Pipe
Chrome-Moly P12 Alloy
Countries We Export To
- United States
Canada- Saudi Arabia
- UAE
Qatar
Oman
Kuwait
Bahrain
United Kingdom- Germany
Italy
Spain
Brazil
South Africa
Australia- Singapore
Malaysia
Indonesia
Vietnam
Thailand