Q345 Welded Steel Pipe
The density of Q345 steel is 7.85g/cm³.Q345 is a kind of low alloy steel, which is widely used in bridges, vehicles, ships, buildings, pressure vessels, special equipment, etc., of which "Q" means yield strength, 345 means that the yield strength of this steel is 345MPa.Q345 comprehensive mechanical properties, low-temperature performance is still available, good plasticity and weldability, used for low and medium pressure containers, tanks, vehicles, cranes, mining machinery, power stations, bridges and other structures subject to dynamic loads, mechanical parts, building structures, general metal structures, hot-rolled or normalized state use, can be used for a variety of structures in the cold regions below -40 ℃.
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of q345 welded steel pipe in China, also supports customized service with low price. Welcome to wholesale discount q345 welded steel pipe for sale here from our factory. Contact us for free sample.
Q345 Welded Carbon Pipe
Q345 Carbon Welded Steel Pipe
Q345 steel is a kind of high-quality low-alloy high-strength steel for structural use in Chinese steel standard GB/T 1591-2008, and its main components include carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), etc. Q345B steel is a kind of low-alloy high-strength steel for structural use in China. It has high tensile strength and yield strength, and is suitable for structural engineering with large loads.
Carbon Q345 Welded Steel Pipe Detail
| Product | Q345 Steel Pipe |
| Shape | Round Hollow Section |
| Material | Carbon Steel |
| Round Steel Pipe Standards | ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387. BS1139, EN10255, EN39, JIS3444, GB/T 3091 & GB/T13793 |
| Square Steel Pipe Standards | ASTM A500, A36, EN10219, EN10210, GB/T 6728, JIS G3466 |
| Surface | 1.Bare/Natural Black
2.Color Painted 3.Oiled with or without wrapped 4.Galvanized / Zinc Coated |
| Ends | Plain ends |
| Special Ends | Round erw steel pipe ends : threaded, beveled, grooved;
Round ssaw steel pipe ends: beveled |
Q345 Carbon Steel Pipe
| Steel Grade | Chemical Composition of Q345 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| C≤ | Mn | Si≤ | P≤ | S≤ | V | Nb | Ti | Al≥ | |
| A | 0.02 | 1.00~1.60 | 0.55 | 0.045 | 0.045 | 0.02~0.15 | 0.015~0.060 | 0.2 | – |
| B | 0.02 | 1.00~1.60 | 0.55 | 0.04 | 0.04 | 0.02~0.15 | 0.015~0.060 | 0.2 | – |
| C | 0.02 | 1.00~1.60 | 0.55 | 0.035 | 0.035 | 0.02~0.15 | 0.015~0.060 | 0.2 | 0.015 |
| D | 0.02 | 1.00~1.60 | 0.55 | 0.03 | 0.03 | 0.02~0.15 | 0.015~0.060 | 0.2 | 0.015 |
| E | 0.02 | 1.00~1.60 | 0.55 | 0.025 | 0.025 | 0.02~0.15 | 0.015~0.060 | 0.2 | 0.015 |
Company Q345 Carbon Pipe Certification
Company Welded Q345 Steel Pipe Factory
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