Anti Rust 3 Inch SCH80 Length 6m Black Carbon Steel Pipe JIS G3429-88

STH 12 Seamless Pipe, Standard JIS G3429-88, 3 Inch, SCH 80, 6 Meters, Anti Rust Oiled Surface.

Japanese standard seamless steel pipe is a kind of steel pipe product processed according to the standards for mulated by relevant departments in Japan .Daily standard seamless steel pipe commonly used steel number STPY41,STPG38,STB30,STB33,STB35,STPT42,corresponding to the domestic material is 10 and 20 steel material. The daily standard seamless steel pipe is made of steel ingot or solid pipe billet through perforation and then hot rolled ,cold rolled or cold dial. There is a hollow section ,a large number of pipes used to transport fluid ,steel pipe and round steel and other solid steel, when the bending and torsion strength is the same, the weight is lighter.

Overview

Carbon steel seamless steel pipe is a kind of long strip steel. The steel pipe has a hollow section and is widely used as a pipeline for conveying fluid, such as oil ,natural gas ,gas ,water and some solid materials. Compared with solid steel such as round steel ,steel pipe has the same flexural and torsional strength and light weight. It is an economic section steel, which is widely used in the manufacture of structural parts and mechanical parts and mechanical parts ,such as petroleum drill pipe ,automobile drive shaft, bicycle frame and steel scaffolding used in construction.

Making ring parts with steel pipe can improve the utilization ratio of materials ,simplify the manufacturing process ,save materials and processing hours, such as rolling bearing ring ,Jack sleeve, etc. At persent ,steel pipe has been widely used to manufacture.

It is divided into 10# seamless steel pipe ,20# seamless steel pipe ,4#seamless steel pipe and so on.

Folding Edit Material Factors

(1) The importance of structure The importance of heavy-duty industrial building structures, long-span structures ,high-rise or super-high-rise civil building structures oe structures, etc. Should consider the selection of seamless steel pipes of good quality ,and for general industrial and civil building structures,the selection of seamless steel pipes of ordinary quality can be made according to the nature of work.

(2)Seamless steel pipes with good comprehensive performance should be used for structures directly bearing dynamic loads and those in strong seismic zones under load conditions ,while seamless steel pipes with lower prices can be usde for structures generally bearing static loads.

(3)The welding process of the connection method results in welding deformation ,welding stress and other welding defects ,and there is a risk of cracks or beittle fracture of the structure .Therefore, the welding structure should be strict with the material requirements.

(4)In the temperature and environment of the structure ,seamless steel pipe is easy to be cold and brittle at low temperature ,so the structure working at low temperature ,especially the welding structure ,should choose the sedative steel with good resistance to low temperature brittle fracture .In addition ,Taiyuan seamless steel pipe with open-air structure ia easy to corrode ,fatigue and fracture ,so different materials should be selected differently.

(5)Too seamless steel pipe thickness ,thin seamless steel pipe rolling times ,rolling compression ratio is large ,the thickness of seamless steel pipe compression ratio is small ,so the thickness of precision steel pipe not only less strength, but also poor plasticity ,impact toughness and welding performance .Therefore ,the welding structure with large thickness should adopt seamless steel pipe with better material

Carbon steel seamless steel pipe has the following standards: