petrochemical engineering pipe parts

Petrochemical industry is the lifeblood of industry, in liquid form, so various types of pipe fittings and their joint accessories are widely used

The types of pipe fittings in the petrochemical industry mainly include the following:

Flange: Used for sealing connections of high-pressure equipment, such as reactor interfaces.

Elbows and tees: used to adjust the flow direction of oil and gas and branch pipelines, especially in cracking units and fractionation towers.

Reducing joint: used for straight connection of pipes of different sizes to achieve pipe diameter change.

Gaskets, raw tape, and hemp thread: used for sealing pipelines.

Collar, towing hook, lifting ring, bracket, bracket, pipe clamp: used for fixing and supporting pipelines.

The application scenarios of these pipe fittings in the petrochemical industry include:  Connecting, steering and diverting operations ‌

Petroleum Refining Plant:

Pipeline: used to connect equipment such as reaction towers, heat exchangers, storage tanks, etc.

Flange: Used for sealing connections in high-pressure equipment.

Bend/tee: used to adjust the flow direction of high-temperature oil and gas or branch pipelines.

Material requirements: Stainless steel (316L), alloy steel (high temperature and high pressure resistance), carbon steel (non corrosive environment)

Basic chemical plant (acid-base, solvent production):

Pipeline: Used for transporting corrosive media, such as fluorine lined pipelines.

Flange: Used for sealing connections between reaction vessels and pipelines, requiring corrosion-resistant gaskets.

Bend/tee: used for diverting corrosive liquids.

Material requirements: PP/PVC (low concentration acid and alkali), fluorine lined pipe fittings (strong corrosion), Hastelloy (high concentration acid).

Fertilizer and pesticide factories:

Pipeline: used for transporting liquid ammonia, nitrogen, pesticide intermediates, etc.

Flange: Used for high-pressure synthesis tower interface.

Triple connector: used for mixing raw materials.

Material requirements: Carbon steel (high pressure non corrosive), stainless steel (anti intergranular corrosion).

Pharmaceutical and Biochemical Engineering:

Pipeline: Used for sanitary grade pipelines to prevent microbial growth.

Flange: Quick installation clamp flange, easy to disassemble and clean.

Bend: Designed with a large curvature to reduce residue.

Material requirements: 316L stainless steel (electrolytic polishing), EP grade certification.

Environmental Protection and Water Treatment:

Pipeline: used for transporting sewage and chemical agents.

Flange: used for connecting flue gas pipelines.

Three way connection: used for diversion of medication points.

Material requirements: fiberglass (acid and alkali resistant), duplex stainless steel (chloride ion resistant).

New energy materials (lithium batteries, photovoltaics):

Pipeline: Used for ultra pure water systems and inert gas protection pipelines.

Flange: High cleanliness connection.

Bend: Avoid dead zones and prevent particle deposition.

Material requirements: PVDF (electrolyte resistant), EP grade stainless steel.