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Carbon steel angle bar, also named angle iron, or steel angle, is basically manufactured by hot-rolled carbon steel or high strength low alloy steel. Carbon steel angle bar is divided into carbon steel equal angle and unequal angle. Angle steel is widely used in bridge building, construction and engineering. The common grades including A36, S235JR, q235, SS400, SS490, ST37, A572 and A588 etc.
Carbon steel unequal angle bar is popularly applied by modern buildings, equipment, factory shops & warehouses and everyday life for its low cost and reliable performances. They tend to be used as supporting or structural components for construction. According to the steel content, angle steel can be divided into mild steel angle and HSLA steel angle.
| ASTM | JIS | SAE | Application |
| A569 A635 A659 A1011 CS Type A, B, C |
G3131 SPHC | 1006~1025 | Commercial Quality |
| - | G3131 SPHD | 1006-1010 | Drawing Quality |
| A622 A1011 DS Type A, B |
G3131 SPHE | 1006~1010 | Deep Drawing Quality |
| A36 A283 GR.C A570 GR.30~40 A1001 SS GR.30~40 |
G3101 SS330 SS400 G3106 SM400A G3132 SPHT1 SPHT2 SPHT3 |
1010~1025 | General Structure (T.S. < 490 N/mm2) |
| A570 GR.45~50 A607 GR.45~70 A1011 SS GR.45, 50 A1011 HSLAS GR.45~70 |
G3101 SS490 G3106 SM490A SM490A SM490YA G3132 SPH4 |
J1392 050X | General Structure (T.S. ≧ 490 N/mm2) |
Uses of carbon steel unequal angle bar include energy, construction, automotive, marine and offshore industries, telecommunication, agriculture and general fabrication.
Carbon steel unequal angle bar has a large number of applications in the field of construction, mainly used in building structures and reinforced concrete formwork.
Carbon steel unequal angle bar also has important applications in shipbuilding. It is mainly used to build the main structure of the ship, such as the hull, deck, bow, stern and other parts.
Widely used in oil and gas extraction, transportation and processing. It is used in the manufacture of oil well pipes, pipelines, drilling pipes and other petroleum equipment.
Carbon steel unequal angle bar is widely used to manufacture a variety of mechanical equipment and parts, such as automobiles, ships, airplanes and construction machinery etc.
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