【Product Series Overview】

The suction and discharge hose series are special flexible conveying hoses developed for negative pressure suction needs of different media and working conditions. Formed by multi-layer composite vulcanization, they consist of inner rubber layer, reinforcement layer (coated canvas/cord/spiral steel wire) and outer rubber layer, with tight bonding between layers, no delamination, no collapse, no cracking during long-term use. The series includes six core categories, covering water, oil, sand, acid-base, food and other media, widely used in farmland irrigation, industrial water absorption, oil loading and unloading, sandblasting operations, chemical conveying, food processing and other fields, meeting the negative pressure conveying needs of different industries.

【Detailed Introduction of Series Products】

1. Water Suction Hose

• Application Scope: Farmland irrigation, shallow well water absorption, industrial production water supply, used for suction and conveying of normal temperature clean water/neutral liquid.
• Core Features: No collapse or deformation under negative pressure, flexible and lightweight, convenient for installation and laying.
• Specifications & Standards: Type 1 (negative pressure up to 63KPa) and Type 2 (negative pressure up to 80KPa), meeting the requirements of HG/T3035-1999 standard.
• Structure & Materials: Inner rubber made of natural rubber/butadiene rubber, reinforcement layer of coated canvas + spiral steel wire, outer rubber of weather-resistant rubber, aging-resistant and wear-resistant.

2. Oil Suction Hose

• Application Scope: Suction and conveying of gasoline, kerosene, diesel oil, engine oil and other mineral oils, suitable for industrial, gas station and small oil depot oil suction operations.
• Core Features: Excellent oil resistance, temperature range -20℃~+80℃, no collapse or delamination under negative pressure below 70KPa.
• Structure & Materials: Inner rubber of oil-resistant nitrile rubber (NBR), outer rubber of weather-resistant aging-resistant chloroprene rubber (CR), reinforcement layer of coated canvas cloth + metal spiral steel wire, tensile and extrusion resistant.
• Execution Standard: Comply with the requirements of HG/T3038-1988(1997) Category 1 for negative pressure use.

3. Heavy Duty Oil Suction & Discharge Hose

• Application Scope: Suction and conveying of crude oil, heavy oil, refined oil and other mineral oils, specially designed for large oil tanker loading and unloading and large oil depot operations.
• Core Features: High bearing pressure, stable pressure bearing, safe and reliable; excellent tensile and torsional properties, adapting to complex working conditions and harsh environments; oil and corrosion resistant, no swelling or leakage during long-term oil conveying.
• Structure & Materials: High-quality oil-resistant rubber formula, multi-layer high-strength reinforcement structure, matched with thickened outer rubber layer, impact and aging resistant, long service life.

4. Sand Suction Hose

• Application Scope: Assembled on various sand suction machines for collecting and removing sand in sandblasting areas, also suitable for suction and conveying of sand, mud and other solid particle-containing media.
• Core Features: High wear-resistant inner rubber layer, anti-scour and anti-wear by sand particles; flexible and lightweight hose body, good bending flexibility, adapting to flexible laying requirements of sandblasting operations.
• Structure & Materials: Inner rubber made of natural rubber + butadiene rubber formula, reinforcement layer of strong coated canvas + spiral steel wire winding, outer rubber of natural rubber/butadiene rubber/chloroprene rubber composite formula, wear-resistant, aging-resistant and tear-resistant.

5. Acid & Alkali Suction Hose

• Application Scope: Suction and conveying of dilute acid and dilute alkali solutions with concentration below 40% (except nitric acid), suitable for corrosive fluid conveying operations in chemical and environmental protection industries.
• Core Features: Excellent acid and alkali corrosion resistance, no collapse or delamination under vacuum degree of 600mmHg (about 80KPa), tight bonding between layers, no leakage risk.
• Structure & Materials: Inner rubber of acid and alkali resistant special rubber, reinforcement layer of coated canvas + spiral steel wire, outer rubber of weather-resistant and corrosion-resistant rubber, meeting the acid resistance requirements of rubber layer in HG/T2183-1991 standard.

6. Food Grade Suction Hose

• Application Scope: Suction and discharge of liquor, beer, juice, soy sauce, vinegar, dairy and other liquid beverages, as well as edible oils such as soybean oil, peanut oil and rapeseed oil, suitable for food processing, brewing and beverage production industries.
• Core Features: Food-grade rubber formula, non-toxic and odorless, does not pollute the taste and color of the medium, meeting the national hygiene standard GB4806.1-1994 for food contact hoses; flexible hose body, easy to clean, adapting to the hygiene requirements of food production.
• Structure & Materials: Inner rubber of food-grade natural rubber/nitrile rubber, reinforcement layer of coated canvas + spiral steel wire, outer rubber of weather-resistant rubber, no harmful substances precipitated, safe and environmentally friendly.

【General Core Advantages of the Series】

1. Excellent Negative Pressure Resistance: Built-in spiral steel wire reinforcement structure, effectively resisting vacuum suction force, no collapse or deformation during long-term negative pressure operation, stable conveying without interruption.
2. Wide Medium Adaptability: Customized special rubber formulas for different media (water, oil, sand, acid-base, food), resistant to medium corrosion, no swelling, no pollution, adapting to various working condition needs.
3. Safe and Reliable, Compliant with National Standards: Each model is produced in accordance with corresponding industry standards, with qualified temperature resistance, negative pressure resistance and corrosion resistance; food-grade models meet national hygiene standards, safe to use.
4. Flexible and Easy to Install, Durable and Sturdy: Flexible and lightweight hose body, good bending performance, adapting to complex terrain laying; high-strength reinforcement layer design, tensile, torsional and aging resistant, long service life, reducing replacement costs.
5. Customized Services: Support customized caliber, length and joint forms (flange, quick coupling, etc.), can provide non-standard solutions according to customer working condition needs, adapting to various equipment and systems.

【Application Scenarios】

• Agricultural Field: Farmland irrigation, shallow well water absorption, irrigation system water supply;
• Petrochemical Industry: Oil loading and unloading, chemical fluid conveying, acid-base solution suction;
• Industrial Field: Industrial water supply, sandblasting operations, sewage treatment, food processing;
• Port and Wharf: Large oil tanker loading and unloading, oil depot oil conveying.

【Manufacturer Advantages】

We are a professional direct manufacturer of suction and discharge hose series, factory direct sales without middlemen with favorable prices, sufficient stock of conventional specifications and short lead time for non-standard customization. All series products are produced in strict accordance with industry standards, each hose has passed negative pressure test, medium resistance test and pressure test, with stable and reliable quality. We can undertake large-scale engineering orders, provide one-stop fluid conveying solutions, support customized development for special working conditions and media, perfect after-sales service and stable long-term supply.