Oil products were known
Functionally, there is no difference between a cut thread and a rolled thread. The difference enters in the manufacture of the bolt. Using 1" anchor bolts as an example the processes are: Cut Anchor,316 TAM Anchor,304 TAM Anchor,Stainless Steel TAM Anchor Taizhou Risco Stainless Steel Products Co.,Ltd , https://www.riscofastener.com
After oil is processed and refined, the products that can be obtained can be roughly divided into four categories:
Fuel petroleum fuel is the most used oil product. According to their use and scope of use can be divided into the following five kinds:
1, ignition-type engine fuel aviation gasoline, gasoline and other vehicles.
2. Jet fuel (jet fuel) has aviation kerosene.
3. Compression-ignition engine fuel (diesel fuel) has high-speed, medium-speed, low-speed diesel.
4. Liquefied petroleum gas fuels are liquid hydrocarbons.
5. Boiler fuels include furnace fuel oil and marine fuel oil.
Lubricants and greases Lubricants and greases are used to reduce the friction between parts and protect the parts to extend their useful life and save power. Their number accounts for only about 5% of all petroleum products, but their variety is numerous.
Bitumen and petroleum coke They are further processed from the production of fuels and lubricating oils, and their production is about a few percent of the crude oil processed.
Solvents and Petrochemicals The latter is an important basic raw material and intermediate in the organic synthesis industry.
Cut thread is created by a process that cuts away the steel from the round bar to form the threads. To cut thread, the process begins with a full 1" diameter round bar. The threads are cut into the round bar resulting in an anchor bolt with 1" diameter threads and a body of 1" diameter.
Rolled thread is created by a process that extrudes steel from the surface of the round bar to form the threads. To roll thread, the process begins with .912" round bar. The round bar is rolled through a set of dies that displace the steel to form the threads. The result is a bolt with 1" diameter thread and a .912" body.
Cut thread meets all ASTM specifications. Rolled thread meets ASTM specifications with the exception of A325 and A490. However, one thing to remember is that Architects and Engineers often specify cut thread for anchor bolts. Cut thread can usually be substituted for rolled thread but the opposite may not always be true.