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Welded Square Tube with Material En10219 S355j2 Rectangular Profile Steel Pipe
| Thickness(mm) | 0.8-12mm |
| Size(mm) | 15*15-300*300/10*20-200*400 |
| Type | Square or rectangular |
| Standard | GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G3466 |
| Grade | Q195, Q215, Q235, Q345,A500, , SS400, |
| Certificate | SGS, ISO |
| Usage | Construction frame, large bridge, car keel, fence tube, machine manufacturing, container frame |
| Technique | Hot rolled and cold rolled , annealed(welded) |
packing | In bundle and double strapped Anti-water paper cover As customer's requirement |
Surface | Pre-galvanized Hot dipped galvanized Oiled, color painting |
| Price term | FOB, CFR, CIF |
| Main market | Middle east, Africa, North&South America, Southeast Asia |
| Delivery | Within 20 days after receipt deposit or L/C |
| Port of loading | Tianjin port, China |
| Payment | TT , L/C |
| Productivity | 1,500,000 tons/ month |
The square tube
It's a name for a square tube, which is a tube of equal length. It is made of strip steel after processing and rolling. Generally, the strip is unpacked, leveled, crimped and welded into a round tube, which is rolled into a square tube and then cut into the required length. Usually 50 sticks per pack.
The square tube has seamless and weld points, seamless square tube is the seamless round tube extrusion molding.
1. Exponential performance analysis of square tubes - plasticity
Plasticity refers to the ability of a metal material to produce plastic deformation (permanent deformation) without damage under load.
2. Performance index analysis of square tube - hardness
Hardness is a gauge of how hard or soft a metal material is. The most commonly used method to determine hardness in production is the indenter hardness method, which is to use a certain geometric shape of the indenter head under a certain load into the surface of the tested metal materials, according to the degree of the indenter to determine the hardness value.
Commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV) and other methods.
3. Performance index analysis of square tube - fatigue
The strength, plasticity, and hardness discussed above are indicators of the mechanical properties of metals under static loading. In fact, many machine parts are operated under cyclic loads, and fatigue can occur under these conditions.
4. Performance index analysis of square pipe - impact toughness
The load acting on the parts at a high speed is called impact load, and the ability of metal to resist damage under impact load is called impact toughness.
5. Performance index analysis of square tube - strength
Strength is the ability of a metal material to resist failure (excessive plastic deformation or fracture) under static loading. Due to the mode of loading in the form of stretching, compression, bending, shearing, so the strength is also divided into tensile strength, compressive strength, bending strength, shear strength and so on. There is often a certain connection between various strengths, and tensile strength is generally used as the most basic strength pointer.
