We received a purchase order from client of Singapore again. This time, they plan to purchase SS316/316L threaded union. The conventional unions are of equal diameter and have a unified standard thread form. However, the union size purchased by the customer this time is of reduced diameter, and the requirements for the thread form are also quite special, with one end having NPT and one end having BSPT. After multiple communications with the production department, the product drawings were confirmed according to the customer’s requirements, ensuring that the produced products can be installed and used normally by the customer. The customer was very satisfied with our early technical support and quickly sent us the order contract.
The Types Of Stainless Steel Union
Stainless steel union is a commonly used pipeline connector that can be easily installed and disassembled. It mainly consists of nuts, cloud heads, and flat joints, and its production standard mainly adopts MSS SP-83.
Pipe connectors machined from stainless steel round steel or steel ingots after forging.The connection forms of union joints are divided into socket welding and threaded connection. Socket welding is the process of inserting steel pipes into socket holes for welding, hence it is called a “socket union”, while threaded connection is the process of screwing steel pipes into screw holes for connection, hence it is called a “threaded union”.
NPT VS BSPT
This batch of SS316/316L threaded unions are reducers, with one end having a size of 1/2 inch and the other end having a size of 3/4 inch. The thread forms are NPT and BSPT, respectively. This is specially designed for the convenience of connecting different thread forms. What are the differences between NPT and BSPT thread forms?
The NPT thread form is the American standard 60 degree cone pipe thread, which is divided into general sealed cylindrical pipe thread and general sealed cone pipe thread. It is a commonly used thread form for SS316/316L threaded unions. The main types of coordination are “cone/cone” coordination and “column/cone” coordination. Specifically, cylindrical internal threads and conical external threads form a “column/cone” fit, while conical internal threads and conical external threads form a “cone/cone” fit.
NPT threads play an important role in pipeline connections due to their excellent sealing performance and wide range of applications. It is commonly used for connecting pipelines and fittings in North America, ensuring smooth fluid transmission in pipelines and preventing leaks.
BSPT thread, also known as British Standard Tape Pipe Thread, is the standard for British taper pipe threads. The characteristic of this type of thread is that its tooth profile angle is 55 ° and it has a taper of 1:16. This threaded form is commonly used for connecting stainless steel SS316/316L threaded union products to European standard pipelines.
Compared to NPT threads, BSPT threads have a smaller tooth profile angle of 55 °, while NPT threads have a tooth profile angle of 60 °. Although both types of threads are used for pipeline connections, their different tooth angles result in differences in sealing performance and usage scenarios. Generally speaking, BSPT threads are more suitable for situations that require special precision and high sealing performance.
SS316/316 Threaded Union Dimension
Threaded Union Weight in KG
Material characteristics
SS316/316L threaded union is a pipe connector that is forged from stainless steel 316 round rods or steel ingots and connected through threads. Due to its excellent corrosion resistance and high-temperature strength, SS316/316L threaded unions are particularly suitable for pipeline systems operating in corrosive environments or high temperature conditions. Whether in industries such as petrochemicals, marine engineering, pharmaceuticals, food processing, etc., flexible joints can provide reliable connections and seals.
In addition, SS316/316L threaded union usually have good sealing performance, which can effectively prevent medium leakage. During installation, the installation personnel only need to follow the correct operating requirements, use appropriate tools and torque for threaded connections.
Chemical Composition
Mechanical Properties
Application
SS316/316L threaded union is an important pipeline connection component, which has wide applications in multiple fields.
construction industry
Power industry
Automotive manufacturing industry
Ship building industry
Oil and gas industry
Food processing industry
In these fields, stainless steel threaded joints play an important role due to their reliable sealing performance, good corrosion resistance, and high-strength connection ability.
Advantages
Reasonable structure;
Easy installation;
Good sealing performance;
Corrosion resistance.
In summary, SS316/316L threaded unions play an important role in the field of pipeline connections due to their wide range of applications and excellent performance characteristics.