Stainless steel bolt is a common connection, because it has the advantages of not easy to rust, corrosion resistance, sturdy and durable, it is widely used in various occasions, such as construction, machinery, automotive and other fields. However, there are also some disadvantages of stainless steel bolts, which will be analyzed in this paper from the following aspects.

1. Expensive price

Compared with the general carbon steel bolts, the price of stainless steel bolts is much higher, this is because the cost of stainless steel materials is higher, and the production process of stainless steel bolts is also more complex, requiring higher technology and equipment. Therefore, the use of stainless steel bolts will increase the cost, which is one of the reasons why some low-cost projects or products are not willing to use stainless steel bolts.

2. Low strength

Stainless steel bolts are usually made of stainless steel materials such as 304 or 316, the strength of these materials is relatively low, especially in harsh environments such as high temperature and high pressure. Therefore, in some high-strength requirements of the occasion, stainless steel bolts may not be able to perform, the need to use other materials of bolts.

3. Vulnerable to stress corrosion cracking

Stainless steel bolts are susceptible to stress corrosion cracking during use, especially in environments containing chloride ions, such as marine environments, swimming pools, etc. Stress corrosion cracking is a special form of corrosion, which can lead to cracks on the surface of the bolt, which in turn affects the strength and stability of the bolt. Therefore, in these environments, stainless steel bolts need to take appropriate protective measures or choose other more suitable bolts.

4. Difficult to weld

Stainless steel materials are difficult to weld and require the use of special welding equipment and technology, otherwise it will be easy to weld unsound, deformation, cracking and other problems. This is also a difficult point in the production process of stainless steel bolts, due to the difficulty of welding, the production cycle and cost of stainless steel bolts will also increase accordingly. 

In summary, although stainless steel bolts have the advantages of not easy to rust, corrosion resistance, durability and so on, but there are also expensive, low strength, susceptible to stress corrosion cracking, welding difficulties and other shortcomings. Therefore, when choosing bolts, you need to consider various factors according to the specific situation and choose the most suitable bolt material and specifications.

Winning the satisfaction of the purchasers is our company’s eternal goal. We will do our best to create new high quality bolts to meet your exclusive needs and provide you with what is the price of stainless steel bolts, stainless steel screw suppliers, stainless steel bolt processing factory, 316 stainless steel bolts, 304 bolts quotation, etc. We take production seriously and do it with integrity, and we are favored by customers both at home and abroad in the fastener industry. If you are interested, please contact us at info@aozhanfasteners.com, you will find our professional experience and high quality bolt products will help your business.

 

Post time: Mar-29-2023

Comparison of the advantages and disadvantages of stainless steel pipes and plastic-lined steel pipes

are relatively common. Their performance is outstanding and each has its own merits. The advantages and disadvantages of the two will be described in detail below.
Plastic-lined steel pipe is a composite pipe made by lining plastic pipes inside steel pipes through tight lining composite technology. It not only has the characteristics of high strength and high pressure resistance of steel pipes, but also has the characteristics of plastic pipes that are not prone to scaling, corrosion resistance, smooth inner wall, low flow resistance, and difficult to breed microorganisms. However, its disadvantages are that it is heavier and is not suitable for long-term storage in the open air. It has poor weldability during installation and needs to be kept away from fire sources.
Stainless steel pipes are usually thin-walled pipes with beautiful appearance, clean and hygienic and high corrosion resistance. The inner wall of the pipe is smooth and light in weight. However, the disadvantage of stainless steel pipes is that the pipe wall is thin. When installing and cutting pipes, it is easy to produce oval openings, making the joints easy to seep. When encountering continuous impact from external forces, it is easy to have dents and scratches. This kind of defect is difficult to repair, and it is difficult to construct during installation. It is also higher, so the overall price is relatively more expensive.
In terms of connection methods, plastic-lined steel pipes usually adopt three types: threaded connection, flange connection and groove connection. Threaded connections and flange connections have been used a hundred years ago. Their technical content is relatively low, ordinary workers can operate them without technical training, and they are relatively safe and reliable methods. The special tight lining process solves the problems of plastic cracking, steel-plastic separation and degumming that occur during groove connection. When connecting to the pipe fitting, in addition to releasing the raw material tape at the thread to form a seal, a silicone rubber gasket must be placed inside the injection molded pipe fitting to keep the end face of the pipe mouth and the plastic-lined root of the pipe fitting sealed, completely isolating the metal and the medium, so as to completely solve the internal problem. Resistant to corrosion issues, thereby ensuring media quality.
Stainless steel pipe connections usually use a compression socket connection. This connection method has relatively high requirements for operators, and the operators must undergo strict special training in advance. If the operator cannot press the calipers at a 90° right angle to the axis of the connection between the pipe and fittings, it will not ensure that the outer wall of the stainless steel pipe is pressed against the axis at the same time, which will cause the pipe diameter ellipse to be staggered, making the gap easy to leak. In more serious cases, the sealing ring will be squeezed out laterally, causing serious water leakage.
In terms of use, plastic-lined steel pipes are suitable for transporting ordinary corrosive liquids or solid media. They are more suitable for domestic water and drinking hot and cold water. They will not affect water quality when transporting water. They can meet food hygiene requirements and are also suitable for reclaimed water. , rainwater, gas, chemical industry, food, pharmaceutical, electric power, sanitation, fire protection, coal mining and HVAC and other fields. Stainless steel pipes are usually used as stainless heat-resistant steel, mainly used in chemical industry and domestic water, weak acid and alkaline fluid medium transportation, etc. Regarding hygienic performance, stainless steel pipes and plastic-lined steel pipes fully comply with food hygiene requirements.

In the use of pipes, plastic-lined steel pipes andare relatively common. Their performance is outstanding and each has its own merits. The advantages and disadvantages of the two will be described in detail below.Plastic-lined steel pipe is a composite pipe made by lining plastic pipes inside steel pipes through tight lining composite technology. It not only has the characteristics of high strength and high pressure resistance of steel pipes, but also has the characteristics of plastic pipes that are not prone to scaling, corrosion resistance, smooth inner wall, low flow resistance, and difficult to breed microorganisms. However, its disadvantages are that it is heavier and is not suitable for long-term storage in the open air. It has poor weldability during installation and needs to be kept away from fire sources.Stainless steel pipes are usually thin-walled pipes with beautiful appearance, clean and hygienic and high corrosion resistance. The inner wall of the pipe is smooth and light in weight. However, the disadvantage of stainless steel pipes is that the pipe wall is thin. When installing and cutting pipes, it is easy to produce oval openings, making the joints easy to seep. When encountering continuous impact from external forces, it is easy to have dents and scratches. This kind of defect is difficult to repair, and it is difficult to construct during installation. It is also higher, so the overall price is relatively more expensive.In terms of connection methods, plastic-lined steel pipes usually adopt three types: threaded connection, flange connection and groove connection. Threaded connections and flange connections have been used a hundred years ago. Their technical content is relatively low, ordinary workers can operate them without technical training, and they are relatively safe and reliable methods. The special tight lining process solves the problems of plastic cracking, steel-plastic separation and degumming that occur during groove connection. When connecting to the pipe fitting, in addition to releasing the raw material tape at the thread to form a seal, a silicone rubber gasket must be placed inside the injection molded pipe fitting to keep the end face of the pipe mouth and the plastic-lined root of the pipe fitting sealed, completely isolating the metal and the medium, so as to completely solve the internal problem. Resistant to corrosion issues, thereby ensuring media quality.Stainless steel pipe connections usually use a compression socket connection. This connection method has relatively high requirements for operators, and the operators must undergo strict special training in advance. If the operator cannot press the calipers at a 90° right angle to the axis of the connection between the pipe and fittings, it will not ensure that the outer wall of the stainless steel pipe is pressed against the axis at the same time, which will cause the pipe diameter ellipse to be staggered, making the gap easy to leak. In more serious cases, the sealing ring will be squeezed out laterally, causing serious water leakage.In terms of use, plastic-lined steel pipes are suitable for transporting ordinary corrosive liquids or solid media. They are more suitable for domestic water and drinking hot and cold water. They will not affect water quality when transporting water. They can meet food hygiene requirements and are also suitable for reclaimed water. , rainwater, gas, chemical industry, food, pharmaceutical, electric power, sanitation, fire protection, coal mining and HVAC and other fields. Stainless steel pipes are usually used as stainless heat-resistant steel, mainly used in chemical industry and domestic water, weak acid and alkaline fluid medium transportation, etc. Regarding hygienic performance, stainless steel pipes and plastic-lined steel pipes fully comply with food hygiene requirements.