Double-Wall Insulated Metal Hose

Product Overview

Our Double-Wall Insulated Metal Hose is designed for applications requiring precise temperature control of the conveyed medium. It not only transports the primary fluid but also provides heating, cooling, or thermal insulation through an outer circulation layer.

This product is ideal for:

  • High-viscosity media that are difficult to flow at room temperature (e.g., crude oil, asphalt, sulfur)

  • Cryogenic or liquefied gases that easily vaporize under ambient conditions (e.g., liquid ammonia, liquid oxygen)

  • Systems where two different media flow through the inner and outer pipes simultaneously

Key Features & Benefits

  • Dual-function design – transport + thermal management

  • Wide temperature range – from –196°C to +450°C

  • Multiple pressure ratings – 0.6, 1.0, 1.6, 4.0 MPa (others available on request)

  • Flexible material options – carbon steel (Q235-A) or stainless steel

  • Customizable flange connections – standard or per customer specification

  • Compact structure with two small flanges positioned 180° apart for easy integration

Technical Specifications

Design & Manufacturing StandardGB/T 14525-93 Corrugated Metal Hose General Technical ConditionsFlange StandardsJB/T 81-94 (welding neck) / JB/T 83-94 (loose flange) – or customBody MaterialsCarbon steel (Code C) / Stainless steel (Code F)Operating Temperature–196°C ~ +450°CPressure Ratings (PN)0.6 / 1.0 / 1.6 / 4.0 MPa (customizable)Small Flange Arrangement180° opposite; height & distance from main flange specified by client

Typical Applications (Illustrative Diagram)

  • Oil & gas – crude oil heating lines

  • Chemical industry – sulfur melting transport

  • Cryogenic systems – liquid ammonia / oxygen transfer with insulation

  • Food & pharmaceutical – temperature-sensitive fluid handling

Why Choose Us?

  • Over 20 years of manufacturing expertise

  • Strict quality control per GB/T 14525-93

  • Flexible customization – sizes, materials, flanges, lengths

  • Reliable performance in extreme temperatures and pressures

  • Trusted by clients worldwide for durability and safety