Stainless Steel Step Bolts Shoulder Metal Bolts 1/2 7/16 1 for Engineering Manufacturing

Stainless Steel Step Bolts Shoulder Metal Bolts 1/2 7/16 1 for Engineering Manufacturing

Product Description:

Applications:

Stainless steel, as a material that occupies a key position in modern industry and daily life, has become an indispensable basic material in many fields due to its excellent corrosion resistance, high strength and good processing performance. Since its introduction at the beginning of the 20th century, the scope of application of stainless steel continues to expand, from the initial industrial field gradually penetrate into the building, transport, home appliances, medical and other aspects, has profoundly changed people's lives and production methods.
In the industrial field, stainless steel with its excellent corrosion resistance, widely used in chemical, petroleum, food processing and other industries in the manufacture of equipment. In chemical production, reactors, pipelines and other equipment are often exposed to a variety of corrosive media, the use of stainless steel can effectively resist corrosion, to ensure the long-term stable operation of the equipment, reduce maintenance costs and improve production efficiency. In the petroleum industry, oil well tubing, refining equipment, etc. need to work in harsh environments, stainless steel's high strength and corrosion resistance makes it the ideal choice of material to protect the smooth progress of oil extraction and processing.

Steel types:

201, 304, 316 are austenitic stainless steel, according to the performance of the non-magnetic, some of the performance of the weak magnetic because of the smelting of the composition of the segregation or improper heat treatment leads to the austenite in a small amount of martensite or ferrite. Austenitic stainless steel corrosion resistance comes from the formation of chromium oxide protective layer on the metal surface. When the material temperature is heated to 450 degrees -900 degrees, the structure changes, will form chromium carbide along the edge of the crystal and can not form a protective layer of chromium oxide, thus reducing the corrosion resistance, this is also known as ‘intergranular corrosion’. As a result, there are 304L and 316L, the two due to the low carbon content also reduces the intergranular corrosion. In particular, the higher susceptibility to intergranular corrosion does not mean that non-low carbon content is more susceptible to corrosion, in a highly chlorinated environment, this susceptibility is also higher.

304 stainless steel
304 is a general-purpose stainless steel that is widely used to make equipment and machine parts that require good all-round performance (corrosion resistance and formability). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium, more than 8% nickel content. 304 stainless steel is a grade of stainless steel produced according to the American ASTM standard.

A2 stainless steel and A4 stainless steel, A2 is a class of 304 stainless steel, A4 is a class of 316 stainless steel, the main difference between the two is here, some of the fastener industry will be 302HQ and 304 referred to as: A2, 316 and 316L (C content of carbon C is less than 03% of the stainless steel, you can increase the ‘L’ logo) called A4.

What is the difference between a270 and a470 stainless steel bolts Nuts are usually used in conjunction with bolts. Hexagonal nuts are more widely used.C-grade hexagonal nuts are used in steel structures, machinery and equipment with rough surfaces and low requirements for precision.A-grade and B-grade hexagonal nuts are mainly used in machinery and equipment with smooth surfaces and high requirements for precision.
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Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of member of Hardware industrial Association and Green energy industry Association.

Jiashan is specialized in milling,turning,lathe 5 axis cnc machining parts,injection molding parts,alumium extrusion parts,laser cutting parts,sheet metal fabrication parts,wire edm parts,vacuum casting parts and fasteners.Those parts are widely service for electric vehicle,solar system,wind power system and construction machinery industry.

During17 years domestic and abroad market investigation, Jiashan's products are sold to many countries and regions including the North America, Europe, Australia, the Middle East and Asia. With owned the advanced cnc machinee, milling machine, polishing machine, stamping machine etc. Jiashan is able to degsin and produce varies OEM parts with drawings or samples provided. Further more, Jiashan also can help to provide a whole solution for modularity R&D of electric vehicle and solar system .

By constantly strengthening our management and consummate the quality guarantee system.In 2023, Jiashan acquired ISO9001:2008 quality certification. Currently,the 5S management mode is implemented in the whole Jiashan system.

Best quality and best service is and will be always our toppest concern.