Product classification
Square tube(GB6728-88)
- 产品描述
-
Square tube is a term for square pipe, which refers to steel pipes with equal sides. It is made by rolling steel strip through process treatment. Generally, the strip steel is unpacked, flattened, curled, welded to form a circular tube, then rolled into a square tube and cut into the required length. Usually 50 pieces per pack.
There are two types of square pipes: seamless and welded. Seamless square pipes are formed by extruding seamless round pipes.
Performance index analysis of square tubes - plasticity
Plasticity refers to the ability of a metal material to undergo plastic deformation (permanent deformation) without failure under load.
2. Performance index analysis of square tubes - hardness
Hardness is a pointer that measures the softness and hardness of a metal material. The most commonly used method for measuring hardness in production is the indentation hardness method, which uses a geometrically shaped indenter to press into the surface of the tested metal material under a certain load, and determines its hardness value based on the degree of indentation.
The commonly used methods include Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC), and Vickers hardness (HV).
3. Performance index analysis of square tubes - fatigue
The strength, plasticity, and hardness discussed earlier are all indicators of the mechanical properties of metals under static loads. In fact, many machine parts work under cyclic loads, and under these conditions, the parts will experience fatigue.
4. Performance index analysis of square tubes - impact toughness
The load acting on the machine at a high speed is called impact load, and the ability of metals to resist damage under impact load is called impact toughness.
5. Performance index analysis of square tubes - strength
Strength refers to the ability of a metal material to resist failure (excessive plastic deformation or fracture) under static loading. Due to the modes of action of loads including tension, compression, bending, shear, etc., strength is also divided into tensile strength, compressive strength, bending strength, shear strength, etc. There is often a certain connection between various strengths, and in use, tensile strength is often used as the most basic strength indicator.
Square tube (GB6728-88)
Fang Gang's Management Theory on Weight
The density of steel is 7.85g/cm3
Common specifications for square tubes
500*500*8~25 220*220*8~25 130*130*4~12
450*450*8~25 200*200*8~25 120*120*4~12
400*400*8~25 180*180*7~20 110*110*4~12
350*350*8~25 160*160*5~16 100*100*4~12
300*300*8~25 150*150*5~14 80*80*4~12
280*280*8~25 140*140*4~14 60*60*4~12
250*250*8~25 135*135*4~14 50*50*4~12
40*40*4~10 30*30*.~6 20*20*2~4
Various specifications can also be customized according to user requirements.
Contact Us
Main business: American standard oil casing, pipeline pipe, Cangzhou oil casing, API oil casing, Hebei oil casing, polyurethane insulation pipe, galvanized wire steel pipe, 3PE anti-corrosion steel pipe, thickened oil pipe, large diameter oil casing, oil casing factory, insulation pipe, oil casing, anti-corrosion steel pipe, etc.
Address: Zhenggang Development Zone, Yanshan County, Hebei Province
Email:czbggy@163.com
Telephone:18831708666 18931747888
