GB5310 25MnG seamless boiler steel pipe is a seamless steel pipe produced in accordance with the national standard GB5310, mainly used for high-pressure boiler pipes. It is suitable for manufacturing seamless steel pipes for high-temperature and high-pressure equipment such as steam boiler pipes with high pressure and above.
GNEE's 25MnG seamless carbon steel pipe is usually hot-rolled or cold-drawn. Common heat treatment methods include normalizing, annealing and tempering to improve the mechanical properties and heat resistance of the material. And the steel pipe size specifications can be customized according to the actual needs of the customer's project.
Products Data
GB5310 25MnG Boiler steel pipe specification
Chemical composition:
| Carbon (C) | 0.27-0.34 |
| Silicon (Si) | 0.90-1.20 |
| Manganese (Mn) | 0.80-1.10 |
| Phosphorus (P) | max 0.035 |
| Sulfur (S) | max 0.035 |
| Chromium (Cr) | 0.80-1.10 |
| Nickel (Ni) | max 0.30 |
| Copper (Cu) | max 0.30 |
Mechanical properties:
| Tensile Strength (Rm) | MPa | 980 |
| Yield Strength (Rp0.2) | MPa | 835 |
| Elongation (A) | % | 12 |
| Impact Energy (KV2) (J) | J | 39 |
| Hardness (HB) | HB | 269-331 |
| Hardness after Heat Treatment (HRC) | HRC | 27-31 |
Products display
GB 5310 25MnG high pressure seamless tubes

Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.8 mm--150 mm.
Outer diameter (OD): 23 mm--1500 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
Why Choose GNEE
1.SGS and ISO9001 certified.
2.Extra long time industry experience
3.Management system - in-house software
4.Finished goods inventory-over 450 tonnes.
If any question,please contact with us freely by E-mail or Telephone.sales@gneetube.com
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FAQ
Q.How long is your delivery time?
A.For the goods we have in stocks, we deliver the goods within 5days. If it is a production order with volume not above 200tons, the delivery time will usually be within 20days after sealing contract. And the delivery time shall be slightly longer for order volume above 200tons.
Q.Can you do partial shipment?
A.We will follow client request to do partial shipment or not. Partial shipment is not a problem for us.
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