Product
Product
Supplier
Search
Get Quote
730 people are quoting
Q245, Q345, 15Mo, 20Mo, and 12CrMo are high-strength low-alloy and alloy structural steels designed for demanding high-temperature and high-pressure applications. These grades offer a balance of tensile strength, toughness, and thermal stability, making them ideal for manufacturing submerged-arc welded (SAW) steel pipes used in boilers, pressure vessels, and pipeline systems operating under severe service conditions.
Outer Diameter (OD): 406 mm – 1620 mm (customizable)
Wall Thickness: 8 mm – 60 mm (customizable)
Length: 6 m – 12 m (fixed or random length; longer lengths available by request)
Manufacturing Process: Longitudinal or spiral submerged-arc welding (LSAW or SSAW)
Standards: GB/T 9711, GB/T 8163, GB/T 8162, ASME SA-106, ASTM A335 (where applicable)
Heat Treatment: Normalizing, Quenching + Tempering (as required)
End Finish: Plain end, bevelled end, or grooved end; protective caps optional
High-Temperature Strength – Maintains mechanical integrity at elevated temperatures.
High-Pressure Resistance – Suitable for steam, gas, and liquid transport under high internal pressures.
Excellent Weldability – Submerged-arc welding ensures deep penetration and uniform weld seams.
Corrosion and Oxidation Resistance – Alloy elements such as molybdenum and chromium improve durability.
Dimensional Accuracy – Precision forming and controlled heat treatment guarantee tight tolerances.
Customizable Sizes & Lengths – Adaptable to different engineering and installation requirements.
| Steel Grade | C | Si | Mn | P (max) | S (max) | Cr | Mo | V | Ni |
|---|---|---|---|---|---|---|---|---|---|
| Q245 | ≤0.20 | ≤0.35 | 0.40-0.70 | 0.030 | 0.030 | — | — | — | — |
| Q345 | ≤0.20 | ≤0.50 | 1.00-1.60 | 0.030 | 0.030 | — | — | — | ≤0.30 |
| 15Mo | ≤0.15 | ≤0.35 | 0.40-0.80 | 0.025 | 0.025 | — | 0.25-0.35 | — | — |
| 20Mo | ≤0.20 | ≤0.35 | 0.40-0.80 | 0.025 | 0.025 | — | 0.25-0.35 | — | — |
| 12CrMo | ≤0.15 | ≤0.50 | 0.40-0.80 | 0.025 | 0.025 | 0.90-1.20 | 0.25-0.35 | — | — |
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness (J) |
|---|---|---|---|---|
| Q245 | 370-500 | ≥245 | ≥25 | ≥27 |
| Q345 | 470-630 | ≥345 | ≥21 | ≥27 |
| 15Mo | 410-550 | ≥245 | ≥22 | ≥27 |
| 20Mo | 410-560 | ≥275 | ≥20 | ≥27 |
| 12CrMo | 470-640 | ≥295 | ≥20 | ≥27 |
Carbon Structural Steel: Q245
Low-Alloy High-Strength Steel: Q345
Alloy Steels for Pressure Vessels and Boilers: 15Mo, 20Mo, 12CrMo
Power Generation: Boiler tubes, steam pipelines, superheater coils.
Petrochemical Industry: Refinery piping, high-pressure heat exchangers.
Chemical Processing: Reaction vessels, process piping for hot corrosive fluids.
Oil & Gas: High-pressure transmission lines for oil, gas, and steam.
Industrial Boilers: Economizer, reheater, and header piping.
ASTM A335 P1, P2, P11 (for high-temperature service)
ASTM A106 Grade B/C (for high-pressure applications)
ASTM A671, A672 (welded pipes for high-temperature service)
EN 10216-2 16Mo3, 13CrMo4-5
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
If you are interested in the product, contact 2bvideo.com for more information for more information
The information of 2bvideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of 2bvideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.
Main Product:
Seamless Steel Tubes ,
Welded Precision Steel Pipes,
Automotive Steel Tubes,
Carbon steel tubes,
Stainless Steel Tubes,
Special Shaped Steel Tubes
