15CrMoG is a commonly used alloy steel pipe material, which belongs to pearlite heat-resistant steel. It has good high-temperature strength and oxidation resistance and is widely used in boilers, chemicals, petroleum, and other fields. The following are its common size specifications (the actual specifications may vary slightly due to different manufacturers and standards):

1. Outer diameter specifications of 15CrMoG alloy steel pipe (mm)
Common outer diameter range: φ10mm~φ630mm, specific common specifications include:
Small diameter: φ10, φ12, φ14, φ16, φ18, φ20, φ22, φ25, φ28, φ32, φ38
Medium diameter: φ42, φ45, φ48, φ51, φ57, φ60, φ76, φ89, φ108
Large diameter: φ133, φ159, φ21 9. φ273, φ325, φ377, φ426, φ530, φ630

2. Wall thickness specifications of 15CrMoG alloy steel pipe (mm)
Common wall thickness range: 1mm~40mm, specific common specifications include:
Thin wall: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6
Medium and thick walls: 7, 8, 9, 10, 12, 14, 16, 18, 20, 22
Thick wall: 25, 28, 30, 32, 35, 40

3. Length specifications of 15CrMoG alloy steel pipe (m)
Fixed length: usually 6m, 9m, 12m (can be customized according to needs).
Unfixed length: generally 4 12 m (specific subject to the actual supply of the manufacturer).

4. Implementation standards of 15CrMoG alloy steel pipes
15CrMoG alloy steel pipes must comply with relevant national standards or industry standards. Common standards include:
GB/T 5310-2017 (seamless steel pipes for high-pressure boilers)
GB/T 14976-2012 (stainless steel seamless steel pipes for fluid transportation, applicable to some scenarios)
ASME SA213/SA213M (American standard, used for high-temperature boiler pipelines)

5. Precautions for 15CrMoG alloy steel pipes
Dimension tolerance: The allowable deviation of the outer diameter and wall thickness must comply with the corresponding standards (for example, GB/T 5310 stipulates that the outer diameter tolerance is usually ±1%, and the wall thickness tolerance is ±12.5%).
Use impact: Different application scenarios (such as high-pressure boilers, and low-temperature pipelines) may have additional requirements for dimensional accuracy and mechanical properties, which need to be confirmed with the supplier in advance.
Customization requirements: Some non-standard sizes can be customized through processes such as hot rolling, cold drawing, or hot expansion.