EN856 4SP Spiral Hydraulic Hose , 4 Wire Rubber Hydraulic Hoses

A. Regarding the hose and fittings assembly shall consider the following aspects;

Working environment; environment temperature, weather condition and other external contact objects.

Conveying medium: liquid, gas, paste, powder, or mixture of several media;

Medium transmission mode: positive pressure transmission, negative pressure suction;

Working conditions: pressure, temperature and flow of conveying medium; Pulse or motion frequency; Chemical properties of the medium;

B. Hoses and hose assemblies have limited service life. Factors leading to reduced service life include:

The bending radius of the hose installation is too small, and the hose body is torsional deformation;

Hose installation free length or movement length is not enough, squeezed, rubbed, stretched and twisted by external forces;

The working temperature or pressure of the hose exceeds the designed working temperature or design working pressure;

The hose connection does not meet the standard, and the quality of the buckle is unqualified;

Poor operating conditions, hose outer rubber layer is polluted and corroded (such as spraying paint), mechanical damage, etc.;

Application: Suitable for conveying mineral oil, water-based hydraulic oil or water by hydraulic system such as coal mine hydraulic support and comprehensive coal mining unit

Tube: black, oil resistant sythentic rubber

Reinforcement: 4 layers of spiraled high tensile steel wire

Cover: weather resistant sythentic rubber

Temperature Range: -40℃~+100℃ (-40°F~+212°F)

Standard: EN856-4SP；GB/T10544-2013

Parameter

Company Profile

Strong production bases, abundant manufacturing experience and professional research team help the in-depth development of industrial hose.Both product types and models can meet all demands in this industry, guaranteeing the quality and delivery of equipment.

Letone Growth: Value+Values

As one of leaders of global industrial hose, Letone always seeks innovation&excellence. Grasping strong production capability, advanced research strength and excellent service, Letone create the values to all of customers.

Independent R&D

3% of sales volume is put on R&D every year. Letone has established its own laboratory, Italian Bimal Impulse Test Stand, Mooney viscosity, a moving die rheometer, high and low temperature test box, an ozone test machine, a UV test machine and super high pressure burst test machine,etc. Letone has set up a R&D center for high pressure rubber hose cooperatively with Qingdao University of Science and Technology, with professional team of 36 technicians including 3 professors/doctoral supervisors, 6 senior engineer and technicians.Letone has mastered the full set of core technology for manufacturing hydraulic rubber hose and obtained 9 national invention patents and 23 utility model patents. It has been the main enterprise unit for drafting several technical standards of China rubber hose industry.

International Trade

Letone has a perfect set of international trade system, ranging from international trade marking to international trade negotiation and from domestic one-step service to overseas localization service. Letone's international trade markets have been expended across Asia, Africa,USA and other developing counties steadily and have been successfully extended into Europe, America and Australia. Letone is changing the way business in done.

Technical Service

Letone believes the value of brand, which originates from not only excellent products and solutions, but also considerate pre-sales & after-sales technical services.So, we have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site surveys, sample analysis, program design, installation, commissioning and maintenance guidance, which can ensure that each link is docking in pace with customers and timely solve customer needs.