ASTM A387 grade 12 specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
A387 grade 12 welded pipe/tube dimension
ERW outer diameter:21.3-660mm thickness:6-25mm
LSAW outer diameter:325-1524mm thickness:6-50mm
SSAW outer diameter:219-3200mm thickness:5-25mm
ASTM A387 grade 12 material chemical composition
| Element | Carbon | Manganese | Phosphorus,max | Sulfur,max | Silicon | chromium | Molybdenum | |||||||
| Grade 12 | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis |
| 0.05-0.17 | 0.04-0.17 | 0.40-0.65 | 0.35-0.73 | 0.035 | 0.035 | 0.035 | 0.035 | 0.15-0.40 | 0.13-0.45 | 0.80-1.15 | 0.74-1.21 | 0.45-0.60 | 0.40-0.65 | |
ASTM A387 grade 12 welded steel pipe/tube mechanical properties
| Tensile strength,ksi[mpa] | Yield strength,min,ksi[mpa] | Elongation in 8 in[200mm],min,% | Elongation in 2 in[50mm],min,% | Reduction of area,min,% | |
| Grade 12 | 65-85 | 40[275] | 19 | 22 |
Shanghai katalor enterprises co.,ltd as the ASTM A387 grade 12 welded steel pipe/tube manufacturer,we have Machining equipment for steel pipe deep processing, we focus on seamless steel pipe(Line pipe,Pipe for structures,Boiler Pipe,Pipe for conveyance of fluid), Welded steel pipe (general welded circular tube,square tube、Rectangular tube).if you need ASTM A387 grade 12 welded steel pipe/tube,contact us!
