1. Material: 10, 20, 20G, 20MnG 

2. Standard: GB5310, GB3087 
3. Tolerance: by the standard 
1.Material: 20G, 20MnG, 25MnG, 15MoG

2. Standard: A106, ASTM A213, ASTM A210, ASTM A179

3. Tolerance: by the standard           

4. Size: OD: 14mm to 426mm, W.T: 2mm to 60mm

5. Delivery Conditions: annealed and pickled

6. Bundling: according to the customer's requirements

7. Packing: seaworthy wooden cases

8. Protection: supply varnish coating, bevel end, plastic cap

9. Applications: for boilers and pressure vessel of medium and low pressure (normally the container and steam pipelines with the operating pressure not higher than 5.88Mpa operating temperature below 450C), for high pressure boilers (normally the containers steam pipeline and petrochemical pipeline with the operating pressure not higher than 9.8Mpa operating temperature between 450C-650C)

10. Certificate Standard: ISO 9001: 2000

11. Payment Terms: T/T in advance or irrevocable L/C at sight

12. Minimum Order: 15 Tons Pipe fittings

13. Delivery conditions: FOB Tianjin, or according to customers' requirement 
14. Delivery Time: Min 15 Days after Receiving the Payments

Mechanical properties

Standard codes

Models of steel tubes

Tensite strengthMPa

Yield strengthMPa

Elongation

Hardness

GB3087

10

335∼475

≥195

≥24

/

20

410∼550

≥245

≥20

/

 
Low and medium pressure boiler tube
.