Q235B square rectangular steel pipe

Description: Q235B square rectangular steel pipe is a type of square seamless steel pipe formed by cold drawing and extrusion of seamless steel pipe, with a hollow section. It is mainly used in industries such as liquid conveying, hydraulic supports, mechanical structures, medium and low pressure, high-pressure boiler pipes, heat exchange pipes, gas, petroleum, etc.

Q235B square rectangular steel pipe is made by processing and rolling Q235B hot-rolled or cold-rolled strip steel. It is widely used in mechanical equipment manufacturing, glass curtain walls, marble curtain wall dry hanging, shipbuilding, cargo support, steel structure engineering, furniture manufacturing, machinery, agricultural and chemical machinery, automotive parts, etc.

Q235B rectangular steel pipe standards: GB/T6728-2002, GB/T6725-2002, GBT3094-2000, JG 178-2005, ASTM A500 JIS G3466, EN10210 or technical agreement.

Q235B square rectangular steel pipe material: Q195-Q235, Q345, 20 #, alloy square pipe, ST37-2, ST52-3, S235, S355, etc.

Q235B rectangular steel pipe hardness testing: Hardness is a pointer to measure the degree of softness and hardness of metal materials. Currently, the commonly used method for measuring the hardness of square rectangular pipes 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 given load, and tests its hardness value based on the degree of indentation.