When conveyants must be maintained at a specified temperature, steam jacketing is used frequently, often in lieu of electric tracing.
Tracers
Traced assemblies are similar in concept to jacketed assemblies in that there is an inner, smaller diameter hose encased by a single large diameter hose. Where jacketed assemblies surround the media with heat or cold, traced assemblies have the media surround the hose containing the heating or cooling element. The tracer, or inner hose, may also be installed in a long 'U' shaped loop within the outer hose, with the steam inlet and outlet at the same end of the assembly.
Guarded Assembly
Use of an external flexible armor protects metal hose from abuse due to rough handling, abrasion and bending below it's limits. Often a rubber cover can accomplish this as well as armor if temperatures will permit
Lined Assembly
If high conveyant velocities are required, use of an internal flexible metal liner will prevent damage and reduce abrasion problems.
Tube: Fluoroelastomer, resists abrasion, corrosion, oil, weather and up to 20% H2S
Reinforcement: Multiple layers of polyester cord over tube, high tensile steel cables.
Cover: NBR, Specially compounded, resistant to abrasion, corrosion, cutting, gouging, oil and weather.
Application: Flexible Connection between standpipe and swivel(Rotary Drilling) or between pump and standpipe(Rotary Vibrator) for pumping mud at extra high pressure in oil drilling and exploration work.
Tube: NBR, specially compounded for handling abrasive, corrosive and oily drilling mud
Reinforcement: Multiple layers of polyester cord over tube, high tensile steel cables.
Cover: NBR, Specially compounded, resistant to abrasion, corrosion, cutting, gouging, oil and weather.
Application: Flexible Connection between standpipe and swivel(Rotary Drilling) or between pump and standpipe(Rotary Vibrator) for pumping mud at extra high pressure in oil drilling and exploration work.
Application: the hose for well control—GNG high-pressure, fire-resistant and heat-insulation hose assembly is mainly used for the hydraulic control of the BOP for drilling and for hydraulic transmission at high temperature and flammable places in the metallurgic industry.
Classification: high molecular polymer jacket type; stainless steel armored jacket type and braided stainless steel wire jacket type