ASTM A334 Grade 7 Welded Carbon and Alloy-Steel Tubes/pipes
A334 Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service.
ASTM A334 Grade 7 specification covers several grades of minimum wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
Shanghai katalor enterprises co.,ltd Is the ASTM A334 Grade 7 carbon steel pipe 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 A334 Grade 7 Carbon and Alloy-Steel Tubes/pipes,contact us!
ASTM A334 Grade 7 carbon steel pipe chemical composition
| Element | Carbon, max | Manganese | Phosphorus, max | Sulfur, max | Silicon | Nickel | Chromium | Copper | Aluminum |
| Grade 7 | 0.19 | 0.90max | 0.025 | 0.025 | 0.13–0.32 | 2.03–2.57 |
A334 Grade 7 Carbon and Alloy-Steel Tubes/pipes mechanical properties
| Grade 7 | ||
| ksi | MPa | |
| Tensile Strength, min | 65 | 450 |
| Yield Strength, min | 35 | 240 |
| Elongation in 2 in. or 50 mm (or 4D), min, %: | ||
| Basic minimum elongation for walls 5 / 16 in. [8 mm] and over in thickness, strip tests, and for all small sizes tested in full section | 30 | |
| When standard round 2-in. or 50 mm gage length or proportionally smaller size specimen with the gage length equal to 4D(4 times the diameter) is used | 22 | |
| For strip tests, a deduction for each 1 / 32 in. [0.8 mm] decrease in wall thickness below 5 / 16 in. [8 mm] from the basic minimum elongation of the following percentage Points | 1.50B | |
A Elongation of Grade 11 is for all walls and for small sizes tested in full section.
B The following table gives the calculated minimum values
ASTM A334 Grade 7 carbon and alloy 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 A334 Grade 7 Welded Carbon and Alloy-Steel Tubes/pipes
A334 Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service.
ASTM A334 Grade 7 specification covers several grades of minimum wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
Shanghai katalor enterprises co.,ltd Is the ASTM A334 Grade 7 carbon steel pipe 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 A334 Grade 7 Carbon and Alloy-Steel Tubes/pipes,contact us!
ASTM A334 Grade 7 carbon steel pipe chemical composition
| Element | Carbon, max | Manganese | Phosphorus, max | Sulfur, max | Silicon | Nickel | Chromium | Copper | Aluminum |
| Grade 7 | 0.19 | 0.90max | 0.025 | 0.025 | 0.13–0.32 | 2.03–2.57 |
A334 Grade 7 Carbon and Alloy-Steel Tubes/pipes mechanical properties
| Grade 7 | ||
| ksi | MPa | |
| Tensile Strength, min | 65 | 450 |
| Yield Strength, min | 35 | 240 |
| Elongation in 2 in. or 50 mm (or 4D), min, %: | ||
| Basic minimum elongation for walls 5 / 16 in. [8 mm] and over in thickness, strip tests, and for all small sizes tested in full section | 30 | |
| When standard round 2-in. or 50 mm gage length or proportionally smaller size specimen with the gage length equal to 4D(4 times the diameter) is used | 22 | |
| For strip tests, a deduction for each 1 / 32 in. [0.8 mm] decrease in wall thickness below 5 / 16 in. [8 mm] from the basic minimum elongation of the following percentage Points | 1.50B | |
A Elongation of Grade 11 is for all walls and for small sizes tested in full section.
B The following table gives the calculated minimum values
ASTM A334 Grade 7 carbon and alloy 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
