Insulation steel pipe global standards: EN, ASTM, GB explanation (updated in 2025)

Number of visits：75 seconds Update time：2025-12-10

The material quality, dimensions, tolerances, thermal insulation performance and thermal insulation performance of thermal steel pipes in different national and regional areas have been carefully examined. Main text: EN (European standard), ASTM (Beautiful country standard), GB (China standard) three major system release, 2025 updated thermal insulation steel pipe standard.

I. EN (European standard)

The EN standard is the same as the industrial standard of each country in Europe, and the specifications of the thermal insulation steel pipes are specified, and the main requirements are the steel pipe material quality, the welding process, and the insulation layer performance.

(1) Main standards

EN 10204 / EN 10216: Steel pipe material quality, standard size, straight-fitting steel pipes and straight-connected steel pipes.

EN 253: PU heat insulation pipe standard, applicable for buried hot water transport system.

EN 448 / EN 488: Specifications for steel jacket insulation pipe technology, comprehensive steel pipe, insulation layer and outer jacket material requirements.

EN 489 / EN 15698: Specifications for the construction of steam and high-temperature water pipes.

(2) Request for number of keys

Steel pipe material quality meets EN 10216 series requirements, ensuring strength and durability.

The density of the heat insulation layer, the thickness of the heating system is determined, and the protection against heat loss is in the design.

The outer shell material has waterproof, antiseptic and mechanical damage resistance.

(3) Reference table for the number of EN heat insulation steel tube keys

II. ASTM (Bikoku Standard)

The ASTM standard system is used in all industrial centers in the world, and it is the leading authority in the North, North, Central and East items. Thermal insulation pipes are compatible with different standards, including steel pipe quality, thermal contact strength, and insulation layer performance.

(1) Main standards

ASTM A53/A106: Standard steel pipes and alloy steel pipes.

ASTM C585/C591: Standards for thermal insulation, constant heat resistance, density and temperature resistance, etc.

ASTM D1248/D2513: Outer shell plastic material performance standard, comprehensive aging resistance, corrosion resistance, mechanical strength.

ASTM E84/E119: Fire prevention and combustion prevention standard.

(2) Request for number of keys

The steel pipe is connected to the ASTM connection, and the safety of operation is guaranteed.

Demand and supply of thermal insulation materials are based on heating rate, density, and temperature resistance.

Outer mantle material demand, resistance to abrasion, and durability tested in Japanese environment.

(3) ASTM standard thermal insulation steel tube number requirement

3. GB (China national standard)

Adhering to the domestic area, the purpose of the heating industry is to be exhibited, the GB standard system is constantly being perfected, and the thermal insulation steel pipe system is fully covered. In 2025, the updated GB standard will be improved in terms of material quality, insulation layer performance and construction pottery.

(1) Main standards

GB/T 12771 / GB/T 19472: Direct-buried insulation steel pipe technology conditions and testing methods.

GB/T 17219 / GB/T 17676: Steel pipe material quality standard, comprehensive straight-fired pipe, spiral-fired pipe and zero-fired steel pipe.

GB/T 17794 / GB/T 18818: Temperature insulation layer and outer jacket performance.

CJ/T 309 / CJ/T 228: Construction of heating pipes provided by the municipal government and implementation of porcelain.

(2) Request for number of keys

Matching the steel pipe material quality requirements, domestic thermal processing requirements, ensuring the protection and corrosion resistance performance of Japan.

Calculate the density and thickness of the heat insulation layer, and request the combination of heat protection and heat protection.

Outer mantle requires waterproofing, anti-corrosion protection, mechanical damage resistance, and construction conditions for direct burying underground or clearing.

(3) GB Chinese national standard thermal insulation steel tube control number request

IV. Type reference for standard selection

Selection type reference: base installation item location and construction option; during the cross-country project, base installation joint or customer request; same time multiple foot multiple standard requirements.