China Shandong Baote metal products Co., Ltd. specializes in producing steel pipe diameter: 6mm-1200mm!

It can destroy the casting structure of ingot, refine the grain of steel and eliminate the defects of microstructure, so as to make the structure of steel dense and improve the mechanical properties. This improvement is mainly along the rolling direction, so that the steel is no longer isotropic to a certain extent; Bubbles, cracks and looseness formed during pouring can also be welded under the action of high temperature and pressure.

Perennial sales: all kinds of seamless steel pipe, precision steel pipe, bright steel pipe, medium and thick wall steel pipe, cold drawn steel pipe, alloy steel pipe, medium and high pressure steel pipe, special equipment pipe, marine steel pipe, gas cylinder pipe, geological drilling pipe, oil casing, hydraulic support pipe, fluid pipe, stainless steel pipe, welded pipe, square pipe, etc.

Various types of steel pipes and non standard steel pipes can be created by suppliers

Hot rolled steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, geological steel pipe and other steel pipes. Cold rolled (drawn) seamless steel pipe includes carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless steel thin-walled steel pipe, stainless steel thin-walled steel pipe and special-shaped steel pipe in addition to general steel pipe, low and medium pressure boiler steel pipe, high-pressure boiler steel pipe, alloy steel pipe, petroleum cracking pipe and other steel pipes.

The outer diameter of hot-rolled seamless pipe is generally greater than 32mm and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless pipe can be up to 6mm and the wall thickness can be up to 0.25mm. The outer diameter of thin-walled pipe can be up to 5mm and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.

Spot sales of steel pipes: bid winning steel pipes, American standard steel pipes, German standard steel pipes, British standard steel pipes, Japanese standard steel pipes and French steel pipes. We sincerely welcome friends from all walks of life to visit, investigate and negotiate business, and hand over the order to us, so that the purchasing customers can save worry and effort. Our steel pipes are exported to Germany, the United States, South Africa, the Middle East, India, South Korea, Pakistan, Iran and other parts of the world.

Annual sales materials of Baote steel pipe: ASTM A53-B, A106A / B, St45-8, 10#, 20#, 35#, 45#, Q355 (ABCD) 20CrMo44, 4119, 4130, 4135, 4140, 4340, 20g, 40Mn2, 45Mn2, 27SiMn, 40MnB, 20mnvb, 20Cr, 40Cr, 35CrMo, 42CrMo, 12Cr1MoV, 38CrMoAl, 50CrV, 20CrMnSi, 30CrMnSi, 35CrMnSi, 20CrMnTi, 30crmnti, 40CrNiMoA, 15CrMoG 201, 202, 301, 304, 316, 321, 316L, 310S, etc

Residual stress caused by uneven cooling. Residual stress is the stress of internal self phase equilibrium without external force. Hot rolled sections of various sections have this kind of residual stress. Generally, the larger the section size of section steel, the greater the residual stress. Although the residual stress is self balanced, it still has a certain impact on the performance of steel members under external force. For example, it may have adverse effects on deformation, stability and fatigue resistance.

The thickness and side width of hot rolled steel products are not easy to control. We are familiar with thermal expansion and cold contraction. At the beginning of hot rolling, even if the length and thickness meet the standard, there will be a certain negative difference after cooling. The wider the edge width of this negative difference is, the thicker the thickness is, the more obvious it is. Therefore, for large steel, the side width, thickness, length, angle and sideline of steel can not be required to be too accurate.

The company was founded in 2003. It abides by the contract and reputation. While continuously improving the competitiveness of customers through service, it has also won market praise for ourselves.