• Application: 

Delayed coking unit is an advanced processing unit in oil refinery industry, Delayed coking process is an important technology for deep processing of heavy oil and residual oil. Hydro decoking hose play an important role in delayed coking unit by delivering high pressure water to coke block cutting equipment in coke tower.

• Standard:HG/T-4788/API Spec 7K

• Hose structure:

Tube: Nitrile rubber based liner, wear resistance, acid &alkali resistance, high-temperature resistance and ageing resistance. 

Break layers and external protection layers: High tension textile fabric .

Major Reinforcement for withstanding pressure: High strength steel cable. 

Cover layer: Neoprene rubber based liner elastomer, fire-proof, wear resistance, oil resistance, ozone & ageing resistance, UV resistance, which is applicable for marine environment. 

• Electric heat trace cable available by functional requirement. 

• Different option of external protection layer are available as request or by our recommendation according to specific operation condition, for example stainless steel armor outer wrap, embedded stainless steel wire in cover, or polyethylene spiral guard, etc.

• Working temperature range:class Ⅱ , -25 ℃ to +100 ℃ or (-13^o F to 212^o F) .

• Maximum continuous length: 70m

• Length tolerance: Length up to 6.4m, with tolerance ± 64 mm; Length longer than 6.4M with tolerance ± 1％ .

• Measurement basis of Minimum Bending Radius (MBR) is center line of each hose.