{"id":6106,"date":"2026-10-09T09:37:08","date_gmt":"2026-10-09T09:37:08","guid":{"rendered":"https:\/\/www.henghuahose.com\/?p=6106"},"modified":"2026-10-09T09:37:10","modified_gmt":"2026-10-09T09:37:10","slug":"what-is-a-chemical-hose","status":"publish","type":"post","link":"https:\/\/www.henghuahose.com\/ko\/what-is-a-chemical-hose\/","title":{"rendered":"What Is a Chemical Hose? Definition, Construction and Applications"},"content":{"rendered":"

A chemical hose is a flexible line built to transfer aggressive liquids, slurries, and gases safely between tanks, trucks, and process equipment. Its chemical hose construction combines four functional layers: a liner that resists the medium, a load-bearing reinforcement, a support helix for vacuum duty, and a protective cover. This page defines the product and maps each layer.<\/p>\n\n\n\n

Chemical Hose Construction: The Four Functional Layers<\/h2>\n\n\n\n

A chemical hose is not a simple tube. The term chemical hose construction describes a layered composite in which each layer performs one job. The finished hose is only as strong as its weakest layer, so reading the stack from the inside out is the fastest route to a correct specification.<\/p>\n\n\n\n

The four layers of a chemical hose are the liner, the reinforcement, the helix, and the cover. Table 1 sets out the job each one performs.<\/p>\n\n\n\n

Table 1. The four functional layers of a chemical hose and the job each performs.<\/p>\n\n\n\n

Layer<\/th>Position<\/th>Primary Job<\/th>What Fails Without It<\/th><\/tr><\/thead>
Liner<\/th>Innermost, touching the medium<\/td>Resists chemical attack and gives a smooth bore<\/td>The medium reaches the reinforcement and the hose leaks<\/td><\/tr>
Reinforcement<\/th>Wound over the liner<\/td>Carries internal pressure and resists end thrust<\/td>The hose bursts or pulls out of its fittings<\/td><\/tr>
Helix<\/th>Embedded in the wall of suction grades<\/td>Supports the wall against vacuum collapse<\/td>A suction line flattens when the pump pulls<\/td><\/tr>
Cover<\/th>Outermost, on the weather side<\/td>Resists abrasion, ozone, sunlight, and spills<\/td>The reinforcement corrodes or wears through<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Failure travels outward through the stack. A liner that stops resisting lets the medium reach the reinforcement, a wall without the helix collapses under vacuum, and a cover that wears through leaves the cords open to water and sunlight.<\/p>\n\n\n\n

Two structural families exist, and the difference is functional rather than cosmetic: a delivery hose handles positive pressure, while a suction-rated version adds the helix that lets it hold vacuum.<\/p>\n\n\n\n

\"Cutaway<\/figure>\n\n\n\n

Figure 1. A cutaway of the four layers: the liner touches the medium, the reinforcement carries pressure, the steel helix supports the wall on suction grades, and the cover protects the outside.<\/p>\n\n\n\n

Materials are chosen layer by layer, and the pairs must be compatible at every interface. A liner that swells in a solvent will not keep that solvent away from the reinforcement, however strong the reinforcement is. That is why a chemical hose construction is specified as a system rather than as a list of individually impressive parts.<\/p>\n\n\n\n

Every decision here traces back to the medium. The fluid comes first, and the pressure, the duty, and the site follow from it.<\/p>\n\n\n\n

How Does a Chemical Hose Liner Hold Back the Medium?<\/h2>\n\n\n\n

The liner is the innermost layer and the part that touches the medium. Every other layer exists to protect it or to support it under pressure. For that reason, the chemical hose liner is usually the first item fixed when a hose is specified, and it sets the outer limits for everything else. A chemical hose construction can only be as resistant as its innermost layer, so the liner choice comes before the reinforcement is even considered.<\/p>\n\n\n\n

Resistance is specific. A liner rated for concentrated sulfuric acid service is rated for that duty alone, and the same liner can fail in a chlorinated solvent. Resistance depends on concentration, temperature, and contact time as well. A material that survives a splash may still swell after a week of continuous immersion, so match the liner to the real medium at its highest working temperature.<\/p>\n\n\n\n

Surface finish matters too. A smooth bore limits material build-up on the wall, which helps when batches must not cross-contaminate. Some lines add a food-contact grade for that reason, following FDA 21 CFR 177.1520 for polyolefins and EU 10\/2011 for plastic food-contact materials.<\/p>\n\n\n\n

Table 2 lists the common liner materials, their planning temperature windows, and the media they suit.<\/p>\n\n\n\n

Table 2. Liner materials for chemical hose, continuous-service temperature windows, and best-fit media (planning values).<\/p>\n\n\n\n

Liner Material<\/th>Temperature Window<\/th>Handles Well<\/th>Known Limits and the Next Liner<\/th><\/tr><\/thead>
PTFE (polytetrafluoroethylene)<\/th>\u221270 \u00b0C to +260 \u00b0C<\/td>Strong acids, caustic, and solvents; the widest chemical inertness<\/td>Molten alkali metals and elemental fluorine sit outside the liner range; highest cost, least flexible<\/td><\/tr>
UHMWPE (ultra-high-molecular-weight polyethylene, also written UPE)<\/th>\u221240 \u00b0C to +120 \u00b0C<\/td>Broad industrial chemical coverage; manufacturer data sheets commonly state about 98%<\/td>For strong oxidizing acids, and for hot aromatics or halogenated hydrocarbons, specify PTFE<\/td><\/tr>
XLPE (cross-linked polyethylene)<\/th>\u221240 \u00b0C to +100 \u00b0C<\/td>Acids, bases, and hypochlorite; a strong cost-to-performance balance<\/td>For aromatic solvent duty, specify PTFE<\/td><\/tr>
EPDM (ethylene propylene diene monomer)<\/th>\u221240 \u00b0C to +120 \u00b0C<\/td>Acids, bases, ketones, alcohols, ozone, and steam<\/td>For petroleum-based oils and aromatics, specify an oil-resistant rubber (NBR)<\/td><\/tr>
Oil-resistant synthetic rubber (NBR)<\/th>\u221230 \u00b0C to +100 \u00b0C<\/td>Petroleum-based oils and fuels<\/td>For ketones, esters, and strong acids, specify PTFE; for ozone and weathering, specify EPDM<\/td><\/tr>
FKM (fluoroelastomer)<\/th>\u221220 \u00b0C to +200 \u00b0C<\/td>Hydrocarbons, acids, and elevated temperatures<\/td>For hot bases, ketones, and amines, specify PTFE or EPDM<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Two facts about these temperature windows are easy to miss. First, each window is a continuous-service range; for a short spike above it, confirm the peak with the compound supplier. Second, a wide window still applies only to the media listed in its own row. PTFE covers the widest span at the highest cost for the same bore and length, while UHMWPE covers the widest slice of everyday industrial chemicals at a lower cost.<\/p>\n\n\n\n

Choosing a chemical hose liner is therefore a balance of chemical range, temperature, flexibility, and cost. Clear the medium first, then satisfy the rest of the duty.<\/p>\n\n\n\n

\"Comparison<\/figure>\n\n\n\n

Figure 2. Liner materials trade temperature range, chemical coverage, flexibility, and cost differently, so no single liner suits every medium.<\/p>\n\n\n\n

To see how these liners sit beside the metal and rubber options used elsewhere in a plant, the flexible hose materials guide<\/a> covers the wider material family. For a side-by-side view of how elastomer liners compare, the hose fluid compatibility chart<\/a> sets out the same compatibility logic for NBR, EPDM, and FKM liners.<\/p>\n\n\n\n

When Do You Need a Suction and Discharge Hose Instead of a Delivery Hose?<\/h2>\n\n\n\n

Over the liner sits the reinforcement, usually several plies of synthetic textile cord wound at controlled angles. The winding angle sets how the hose behaves under pressure. Cords laid at a low angle resist bursting well but allow the hose to grow in length when pressurized. Cords laid at a high angle limit that growth but carry pressure less efficiently. Most chemical hose uses a balanced build that limits both effects at once.<\/p>\n\n\n\n

Steel is the other common reinforcement. A thin steel helix embedded in the wall gives the hose its vacuum resistance, and it holds the bore open when the line runs under negative pressure.<\/p>\n\n\n\n

A suction and discharge hose carries that helix along its full length, so the wall cannot collapse when a pump draws. A delivery hose is rated for positive pressure only; where the line has to hold vacuum, specify the suction and discharge build.<\/p>\n\n\n\n

Under EN 12115:2021, the suction and discharge hose is built to the Type SD pattern, while a pressure-only line follows the Type D pattern. Table 3 contrasts the two.<\/p>\n\n\n\n

Table 3. Type D and Type SD construction differences under EN 12115:2021.<\/p>\n\n\n\n

Feature<\/th>Type D (Delivery)<\/th>Type SD (Suction Rated)<\/th><\/tr><\/thead>
Helix support<\/th>None<\/td>Steel helix embedded in the wall<\/td><\/tr>
Vacuum service<\/th>Pressure service only; specify Type SD for vacuum<\/td>Supports negative pressure without collapse<\/td><\/tr>
Flexibility<\/th>Higher<\/td>Lower, because of the helix<\/td><\/tr>
Typical duty<\/th>Pressure transfer between fixed points<\/td>Tank emptying and pump suction lines<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

A balanced chemical hose construction meets both duties with the same liner and cover, and the helix is the only structural difference between them. The pump arrangement decides which build a line needs.<\/p>\n\n\n\n

For a fuller comparison of how these two duty types behave in the field, the guide to suction hose vs delivery hose<\/a> walks through the same distinction with selection detail.<\/p>\n\n\n\n

The Cover: Sealing the Chemical Hose Construction<\/h2>\n\n\n\n

The cover is the outermost layer, and it does two jobs. It protects the reinforcement from the environment, and it carries the identification a user needs in the field. A good cover resists abrasion, ozone, sunlight, oils, and the chemicals likely to splash it from outside.<\/p>\n\n\n\n

Cover compounds are usually rubber-based, and EPDM is the common choice for chemical service. Some designs add a conductive or anti-static compound to the cover so that static charge can drain to ground instead of building on the wall.<\/p>\n\n\n\n

Hose printing is part of the cover’s job: size, working pressure, temperature range, and the standard the hose was built to all appear on the cover. Read that printing first when a delivery arrives, because it tells you whether the hose matches the order.<\/p>\n\n\n\n

The cover also takes the most abuse on site, so it is the layer that ages first. Cuts, blisters, and exposed cords mean the outside protection has gone, and the whole stack is then at risk.<\/p>\n\n\n\n

A properly built cover completes the chemical hose construction by tying the layers into one sealed, handleable unit that keeps grit and water off the cords and can be wiped, coiled, and stored without damage.<\/p>\n\n\n\n

In flammable service, the electrical grade matters as much as the mechanical build. EN 12115:2021 defines four electrical grades and measures resistance under EN ISO 8031, with an M grade at or below 10\u2076 \u03a9 and an \u03a9 grade at or below 10\u2079 \u03a9. In use, bonding and grounding follow the OSHA requirements.<\/p>\n\n\n\n

Which Chemical Hose Applications Need Which Build?<\/h2>\n\n\n\n

Chemical hose applications fall into a handful of broad settings, and the setting usually drives the construction. A tank farm, a delivery truck, and a food line each stress the hose differently. Table 4 maps common industries to the media they move and the build that suits them.<\/p>\n\n\n\n

Table 4. Application map by industry, typical media, and matching construction.<\/p>\n\n\n\n

Industry<\/th>Typical Media<\/th>Matching Construction<\/th><\/tr><\/thead>
Chemical manufacturing<\/th>Acids, caustics, solvents<\/td>Liner matched to the medium, textile reinforcement, plant-duty cover<\/td><\/tr>
Tank truck transfer<\/th>Solvents, fuels, corrosive liquids<\/td>Type SD suction build, plus a conductive or anti-static grade for the flammable fluids<\/td><\/tr>
Water treatment<\/th>Hypochlorite, ferric chloride, caustic<\/td>XLPE liner rated 150 PSI (about 10 bar)<\/td><\/tr>
Food and beverage<\/th>Food-grade acids and cleaning agents<\/td>Food-contact liner with a smooth bore<\/td><\/tr>
Mining and mineral processing<\/th>Slurry reagents and flotation chemicals<\/td>Abrasion-resistant cover over a reinforced build<\/td><\/tr>
Agriculture<\/th>Fertilizers and ammonia solutions<\/td>Liner matched to the fertilizer, weather-resistant cover<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Read these chemical hose applications per station, because two stations in one plant can load the same fluid differently. A line that stays in a fixed rack and a line that is dragged across a concrete yard need different covers even when both carry the same medium. That is why a chemical hose construction is specified from the station outward, not from a catalog inward.<\/p>\n\n\n\n

Temperature is the second axis that shapes the map. A hose that is adequate in a cool indoor line may be the wrong choice on a sun-exposed loading bay, so the working temperature has to be confirmed before the liner is fixed.<\/p>\n\n\n\n

A third axis is cleanliness. Food, pharmaceutical, and fine-chemical lines care about what stays in the bore between batches. A smooth liner and a cleanable assembly matter more there than raw pressure capacity, and the specification should say so.<\/p>\n\n\n\n

\"Map<\/figure>\n\n\n\n

Figure 3. Across the application map one pattern holds: the medium sets the liner, the pressure and duty set the reinforcement, and the site sets the cover.<\/p>\n\n\n\n

For the full selection path across types, materials, and sizes, start with the chemical hose complete guide. It arranges the same factors into a decision order that begins with the medium and ends with the fitting.<\/p>\n\n\n\n

Materials, Temperature and Pressure in Chemical Hose Construction<\/h2>\n\n\n\n

The working pressure of a chemical hose is a continuous rating at the stated reference condition. Common ratings are 150 PSI (about 10 bar), 16 bar, and 17 bar. Burst pressure typically lands at three to four times the working pressure, a planning figure that leaves room for surges and water hammer.<\/p>\n\n\n\n

Below the pressure rating sits the electrical grade. For flammable or non-conductive service, the hose must be able to drain static. Table 5 gathers the common ratings and grades in one view.<\/p>\n\n\n\n

Table 5. Common working-pressure ratings, typical duty, and electrical grades for chemical hose.<\/p>\n\n\n\n

Item<\/th>Value<\/th>Typical Duty<\/th><\/tr><\/thead>
Working pressure, light<\/th>150 PSI (about 10 bar)<\/td>Water treatment and general chemical transfer<\/td><\/tr>
Working pressure, mid<\/th>16 bar<\/td>General industrial chemical lines<\/td><\/tr>
Working pressure, suction grade<\/th>17 bar<\/td>XLPE suction duty with a steel helix and two cross anti-static copper wires<\/td><\/tr>
Electrical grade M<\/th>Resistance at or below 10\u2076 \u03a9<\/td>Conductive service where charge must drain<\/td><\/tr>
Electrical grade \u03a9<\/th>Resistance at or below 10\u2079 \u03a9<\/td>Anti-static service<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The core standard for rubber and thermoplastic chemical hose is EN 12115:2021, which covers the hose and the assemblies built from it. It sets two construction types, Type D and Type SD, four electrical grades, a working pressure of 10 bar, and an applicable temperature range of \u221220 \u00b0C to +65 \u00b0C. Those figures are the standard’s own applicable limits for the hose and its assemblies; the liner windows in Table 2 are material planning windows on a different axis, not service limits. Electrical resistance is tested to EN ISO 8031.<\/p>\n\n\n\n

Supporting standards fill in the rest of the picture. Hydrostatic testing follows ISO 1402, pulse testing follows ISO 6803, and abrasion testing follows ISO 4649. Oil suction and discharge service follows ISO 1823, thermoplastic hydrocarbon hose follows EN 13765, and corrugated metal hose follows ISO 10380.<\/p>\n\n\n\n

Bore size is the last item fixed in a chemical hose specification. The main bores in chemical service are 3\/4 in, 1 in, 1-1\/4 in, 1-1\/2 in, 2 in, 3 in, and 4 in. Flow rate and the fittings on each end set the bore. The hose size selection guide<\/a> explains how to tie the two together.<\/p>\n\n\n\n

Reading the working pressure, the temperature and the electrical grade together is the whole point of a specification: a 17 bar suction-grade line with an M electrical grade is a different product from a 150 PSI delivery line. The 17 bar XLPE chemical hose is a worked example of the suction pattern, pairing an XLPE liner with a steel helix. For the full standard set behind these values, the hose standards comparison guide puts SAE, DIN, ISO, and GB side by side.<\/p>\n\n\n\n

Chemical Hose FAQs<\/h2>\n\n\n\n

What is a chemical hose used for?<\/h3>\n\n\n\n

A chemical hose carries the fluids that would attack a standard water or air hose: acids, caustics, hypochlorite, solvents, and fuels. Those media reach the reinforcement of a general-purpose hose and break it down from the inside, so the liner has to be matched to each one. The same duty applies to hot media, to abrasive slurries, and to any line that has to hold vacuum.<\/p>\n\n\n\n

How is a chemical hose different from a water hose?<\/h3>\n\n\n\n

A chemical hose has a liner chosen to resist the specific medium, while a water hose is built for water only. Reinforcement, electrical grade, and cover also differ, since chemical service adds vacuum duty, static control, and spill resistance that a water hose does not need.<\/p>\n\n\n\n

What are the four layers of a chemical hose, and which one fails first?<\/h3>\n\n\n\n

Across the liner, the reinforcement, the helix and the cover, the liner usually fails first, and it shows as a soft spot, a blister, or a bulge rather than a leak. The reinforcement goes next, and the hose grows under pressure or weeps at the crimp. The cover fails last: a cut that reaches the cord means the protection is gone.<\/p>\n\n\n\n

What is the difference between Type D and Type SD?<\/h3>\n\n\n\n

Type D is the pressure-only delivery build and Type SD adds the steel helix for suction duty. Put a delivery hose on a suction leg and it collapses flat and stays kinked, so the line stops moving fluid. A suction-rated hose on a fixed pressure line still works, but it is heavier, stiffer, harder to coil, and it costs more at the same bore. Specify it whenever the line can ever drain a tank from the top.<\/p>\n\n\n\n

Which liner material resists the widest range of chemicals?<\/h3>\n\n\n\n

PTFE resists the widest range of chemicals and the widest temperature span, so it is the safe starting point when the medium is a mixture, a trade name, or simply unknown. From there, check three things against the data sheet: concentration, the highest working temperature, and contact time. A wide chemical range still has to be confirmed against the actual duty.<\/p>\n\n\n\n

Can one chemical hose handle every chemical?<\/h3>\n\n\n\n

No single hose covers every chemical, so the practical question becomes what the line carries next. Drain and flush the hose before a different fluid goes through it. Record the media and the date on the hose log, and remember that a liner which handled both fluids separately can still be wrong for the mixture.<\/p>\n\n\n\n

Why does a suction line need a steel helix where a delivery line does not?<\/h3>\n\n\n\n

A suction line needs the helix because the pump pulls a partial vacuum, and a wall without support flattens and stays flat even after the pressure returns. The sign that a line needed one is a kink that does not spring back. The price is stiffness: a suction-rated hose bends less tightly than a delivery hose of the same bore.<\/p>\n\n\n\n

What working pressure can a chemical hose carry at the top of its temperature range?<\/h3>\n\n\n\n

The rating has to be read with the temperature, because the two form one combined limit. A hose rated at 150 PSI (about 10 bar) at the reference condition carries less at the top of its temperature window. Treat the working pressure and the maximum temperature as a pair, and confirm the derated figure with the supplier whenever a line runs hot. On suction duty, the 17 bar grade is the one to compare against.<\/p>\n\n\n\n

How do I work out the bore size for a tanker unloading line?<\/h3>\n\n\n\n

Start from the flow the line has to carry and the suction lift on the tanker side. A larger bore drops the velocity and the pressure loss, but it adds weight and cost and makes the line harder to handle on a loading bay. A smaller bore raises the velocity, which can increase abrasion and static generation. Set the bore from the flow, then confirm it against the fitting on each end.<\/p>\n\n\n\n

Sourcing a Chemical Hose Construction Built to Specification<\/h2>\n\n\n\n

Good sourcing starts with the medium and works outward to the hose. Write down the fluid, its concentration, its highest working temperature, and whether the line will ever see vacuum. Those four inputs narrow the liner and the duty type before price enters the conversation, and they prevent the most common ordering mistake.<\/p>\n\n\n\n

Three readers arrive with the same four inputs and different jobs in mind. Replacing a failed hose? Start from the failed layer and the fluid it carried, because the replacement has to match the duty, not the old part number. Specifying a new line? Fix the fluid, the temperature and the vacuum duty first. Stocking for resale? Hold the bores and pressure classes that cover the common duties, and carry one liner that clears the widest range of media.<\/p>\n\n\n\n

Use this order when you build the specification:<\/p>\n\n\n\n

    \n
  1. Match the liner to the medium at its highest working temperature.<\/li>\n\n\n\n
  2. Decide delivery or suction duty from the pump arrangement.<\/li>\n\n\n\n
  3. Confirm the working pressure with margin for surges.<\/li>\n\n\n\n
  4. Set the electrical grade for flammable or non-conductive service.<\/li>\n\n\n\n
  5. Verify the size against the flow and the fitting on each end.<\/li>\n\n\n\n
  6. Ask the supplier for a written specification and a sample before bulk ordering.<\/li>\n<\/ol>\n\n\n\n

    A hose built to the wrong layer will fail at the interface, no matter how good each part looks on paper. That is why the safest order names the medium, the duty, the pressure, the temperature, and the electrical grade in one line. A quote built from that line can be checked against a data sheet.<\/p>\n\n\n\n

    The practical test of any chemical hose construction is simple. If the liner clears the medium, the reinforcement clears the pressure, the helix clears the duty, and the cover clears the site, the hose is right. If any one of those four is a guess, the specification is not finished.<\/p>\n\n\n\n

    About HENGHUA<\/h2>\n\n\n\n

    HENGHUA manufactures chemical hose and complete hose assemblies for distributors, retailers, and OEM brands. The chemical line covers UHMWPE (UPE), XLPE, and PTFE liners plus rubber constructions in EPDM and oil-resistant synthetic rubber, all built with high-tensile textile reinforcement and a steel helix for suction duty.<\/p>\n\n\n\n

    We supply factory-crimped assemblies, custom lengths, fittings, cover printing, private label, and OEM\/ODM branding. Because we control the build from liner to cover, we can quote factory-direct pricing with short bulk lead times and back the product with a warranty. Send us the medium, the duty, the pressure, the temperature, and the size, and we will quote against that specification. Get a quote and free samples<\/a><\/p>\n\n\n\n

    Written and reviewed by the HENGHUA engineering team, which supports hose selection for chemical, water treatment, mining, and OEM customers. Reviewed against the standards and the published compound data referred to in this guide. <\/em><\/p>","protected":false},"excerpt":{"rendered":"

    A chemical hose is a flexible line built to transfer aggressive liquids, slurries, and gases safely between tanks, trucks, and process equipment. Its chemical hose construction combines four functional layers: a liner that resists the medium, a load-bearing reinforcement, a support helix for vacuum duty, and a protective cover. This page defines the product and […]<\/p>\n","protected":false},"author":1,"featured_media":6065,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[2281,2279,2280,1211],"class_list":["post-6106","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-chemical-hose-applications","tag-chemical-hose-construction","tag-chemical-hose-liner","tag-suction-and-discharge-hose"],"yoast_head":"\nChemical Hose Construction: Definition and Layers | HENGHUA<\/title>\n<meta name=\"description\" content=\"Chemical hose construction explained layer by layer: the liner, reinforcement, helix for suction duty, cover, plus materials, ratings and applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.henghuahose.com\/ko\/what-is-a-chemical-hose\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is a Chemical Hose? 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