Heat-shrink joints for pre‑insulated pipes
BG Industry makes the heat‑shrink joints for the field joints of pre‑insulated district heating pipes. The material is casing‑grade HDPE PE 100 polyethylene, sealed with butyl mastic. The butyl‑sealed heat‑shrink joint is type‑tested to EN‑489‑1:2019 at the Veolia Energy Warsaw testing laboratory (PCA accreditation AB 414). The type test was carried out on the joint assembly at casing diameters Dc 250 mm and Dc 160 mm. The range runs DN 90 – DN 450.
BG Industry, products
Shrink Sleeve
Heat‑shrink joint for the straight field joint between two pre‑insulated pipes.
Reduction Sleeve
Heat‑shrink joint for joining two casing pipes of different diameter.
End Sleeve
End sleeve for pipeline terminations and pipe ends.
PEX and welded sleeve
Alongside the basic PE sleeve, BG Industry has two further type‑tested joint constructions.
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Where this is used
- Pre-insulated pipe joints in district heating networks
- District cooling networks
- Pipeline branches and terminations
Three type-tested joint constructions
All three are type-tested to EN‑489‑1:2019 at the Veolia Energy Warsaw laboratory. The choice depends on whether the joint is foamed on site and whether you want a welded joint as well.
- 1Shrink sleeve, casing‑grade HDPE PE 100
- 2Butyl seal at both ends of the sleeve
- 3Foamed in the joint on site
- 4Pre‑fabricated insulation shells instead of foaming
- 5Circumferential electric weld in addition to the butyl seal
1.1 PE shrink joint casing, single sealed with adhesive (foamed in the joint). Casings tested: Dc 250 mm / PE 4,2 mm and 160 mm / PE 3,1 mm.
VWAW/DE/EB/EBB/25/1027/7/1 · 30.01.2026
2.1 PEX shrink joint casing, single sealed (pre‑fabricated shells). Casings tested: Dc 250 mm / PE 4,4 mm and 160 mm / PE 3,8 mm.
VWAW/DE/EB/EBB/25/1027/9/1 · 30.01.2026
4.1 Welded shrink joint casing (circumferential), single sealed. Casings tested: Dc 250 mm / PE 4,2 mm and 160 mm / PE 4,1 mm.
VWAW/DE/EB/EBB/25/1027/8/1 · 30.01.2026
The joint decides how long a pre‑insulated pipe lasts in the ground.
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