Oil transmission lines are one of the most vital industrial infrastructures in the world. These lines transport millions of barrels of crude oil from fields to refineries every day, and every small mechanical connection, including bolts and nuts, plays an important role in the safety and stability of this process.
The importance of bolts and nuts in the oil industry
In oil, gas and petrochemical projects, flange joints are connected by bolts and nuts. Any weakness in the selection, installation or material of these connections can lead to leakage, corrosion or even explosion. For this reason, the selection of bolts and nuts should be based on international standards and working conditions.
Types of bolts and nuts in oil transmission lines
High Tensile steel screws: they are mainly made of alloy steel and can withstand high pressure and temperatures.
Stainless steel bolts and nuts: used for wet areas and corrosive environments.
Hot-dip galvanized bolts and nuts: Protected by zinc coating to minimize rusting.
Screw with PTFE or Xylan coating: for chemical resistance and better lubrication in special services.
Bolt and nut selection standards
The following standards are usually used in the oil industry:
ASTM A193 Grade B7 / B7M: For high temperature and high pressure conditions.
ASTM A194 Grade 2H / 7 / 8M: It is for nuts that are compatible with the above grades.
ASME B16.5, DIN EN ISO 898: for dimensions and tolerances.
Corrosion and sealing
One of the main challenges in oil lines is the corrosion of flanges and bolts. The use of anti-rust grease, sacrificial anode, or special polymer coatings (such as PTFE) increases the life of the joints.
Tips for buying suitable bolts and nuts
Choose the material according to the pressure and temperature of the system.
Buy from reliable industrial sellers who provide certificates, such as Poladan Sazeh, which is managed by Mr. Farhad Taher
If the pipeline is in coastal or acidic areas, choose stainless or galvanized bolts.
Summary
Bolts and nuts may look like a small part, but in oil transmission lines, they play an equal role with pipes and pumps. Choosing it correctly means preventing billions in losses, increasing safety and reducing operational downtime.
Contact Poladan Sazeh Company:
02155422441🙏
02155421499 🙏