20#,45#,Q345B Carbon Steel Seamless Square Pipe Used for conveying fluids
Seamless square tube is a square steel tube with four corners. It is a square steel tube formed by cold drawing and extrusion of seamless steel tube. Seamless square tube and welded square tube have essential differences. The steel pipe has a hollow section and is widely used as a conduit for conveying fluids.
Compared with solid steel such as round steel, steel pipe has the same bending and torsional strength and lighter weight. It is a kind of economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile drive shaft, bicycle frame and steel scaffolding used in construction. Using steel pipe to manufacture ring parts can improve material utilization rate, simplify manufacturing process, save material and processing time, such as rolling bearing ring, jack sleeve, etc. In 2013, it was made of steel pipe. Steel pipe or all kinds of conventional weapons military machinery indispensable material, barrel, barrel and so on to make steel pipe. Steel pipe can be divided into round pipe and special-shaped pipe according to the shape of cross-sectional area. Because in the condition of equal perimeter, more fluid can be transported with circular pipe. When the annular section is subjected to internal or external radial pressure, the force is more uniform, most of the steel tubes are round.
main performance
1. The plastic
Plasticity refers to the ability of a metal material to produce plastic deformation (permanent deformation) without damage under load.
2. The hardness
Hardness is a gauge of how hard or soft a metal material is. In this life in the production of hardness measurement method is the most commonly used in the indenter hardness method, it is to use a certain geometric shape of the indenter head under a certain load into the surface of the metal material to be tested, 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. The fatigue
Strength, plasticity and hardness are indicators of the mechanical properties of metals under static load. In fact, many machine parts are operated under cyclic loads, and fatigue can occur under these conditions. The way also needs to have other section shape of special-shaped steel pipe.
| Product Name | 20#,45#,Q345B Carbon Steel Seamless Square Pipe Used for conveying fluids |
| Material | Carbon Steel |
| Grade | 45# 20# Q345B |
| Tolerance | ±1% |
| Delivery Condition | Sea Transportation |
| Application | conveying fluids |
| Advantage | High Cost Performance and Stock Available |
| Elongation | 10% |
| Feature | |
| Standard | JIS, AiSi, ASTM, GB, DIN, EN |
| Technique Process | Round steel pipe inspection - - - - heating perforation, sizing, hot rolling, flat head, inspection, pickling, ball annealing - cold drawn - molding - mouth - inspection |
| Chemical Composition | Q345A:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035 Q345B:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035；Q345C:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.030,Al≥0.015；Q345D:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.025,Al≥0.015；Q345E:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.025,S≤0.020,Al≥0.015；Q345A,B,C,D,E 20#,Q235B |
Product Pictures
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Q345b Carbon Steel Seamless Square Tube 12m For Conveying Fluids Images
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