1.Tubular girth weld sleeve
2.Heat shrink sleeve
3.Corrosion protection for pipeline
4.HSTS
Tubular Girth Weld Sleeve
Product profile
l Heat Shrinkable Tubular Sleeves (HSTS) consist of a cross-linked polyolefin backing, coated with an adhesive which effectively bonds to steel substrates and common pipeline coating including polyethylene and fusion bonded epoxy. Tubular type sleeves are installed before joining the pipe ends by sliding the coat from a free end of the pipe onto the area to be coated. It is designed for corrosion protection of flanges, bell and spigot joints and other high profile couplings.
Features & Benefits
l Heat Shrinkable Tubular Sleeves are superior performance heat shrinkable products designed for corrosion protection of flanges, bell and spigot joints and other high profile couplings.
l HSTS provide great corrosion protection, Superior resistance to Cathodic Disbondment and excellent durability against abrasion and chemical attack. The result is effective, good performance of sealing, wide application, easy to operate and preheating temperature low (50 ºC), long term protection against corrosion.
l Tubular design allows for convenient and fast installation because less time is spent handling the sleeve and closure
l Cross-linked backing provides superior abrasion, mechanical and chemical attack resistance.
l High performance adhesive provides excellent resistance to Cathodic Disbondment to ensure long-term corrosion protection
Specification: (mm)
l Sleeves width: 100mm, 150mm, 200mm, 300mm, 450mm, 500mm, 600mm, 900mm
Properties of sleeve
Width deviation (max) | ±10% width or 0.25 in.(6mm),Whichever is smaller | AWWAC216-5.3.1 |
Thickness(min) | 60mil 1.5mm | AWWAC216-5.3.2 |
Dieletctric strength | 400V/mil(15V/um) | ASTM D149 |
Volume resistivity | 1014 ohm-cm | ASTM D257 |
Adhesion to steel | 15lb/in. width (25N/cm) | ASTM D1000 |
Lap shear | 12 psi | ASTM D1002 |
Heat shock | No visual cracking, flowing, or dripping | AWWAC216-5.3.8 |
Tensile strength | 2200 psi | ASTM D638 |
Elongation 23 | 400% | ASTM D638 |
Impact resistance | 25 in.-lb (282cm-N) | ASTM G14 |
A. Properties of sleeve PE backing
Properties | Test Method | Typical Values |
Tensile strength at 23 ºC kg/cm2 | ASTM D638 | 170Min |
Elongation at 23 ºC,% | ASTM D638 | 500Min |
Volume resistivity, at 23 ºCΩ.m | ASTM D257 | 1*1014min |
Dielectric strength KV/mm | ASTM D149 | 25 |
Water absorption at 23 ºC 24hrs.wt | ASTM D570 | ≤0.1 |
Water-vapour transmission (max) | ASTM E96 | 0.05g/h/ m2 |
Low Temp. Brittleness ºC | ASTM D764 | -65 |
B. Properties of Melt Adhesive Sealant
Properties | Test Method | Typical Values |
Softening point, ºC | ASTM E28 | 100 |
Peel strength 250mm/min At 23 ºC At 50 ºC | ASTM D1000 | ≥70 |
Lap shear strength (N/ m2) At 23 | ASTM D1002 | ≥1.0 |
C. Properties of Installed sleeve
Properties | Test Method | Typical Values |
Impact Resistance | ASTM G14 | ≥50 |
Cathodic Disbondment At 23 ºC 30 days mm rad | ASTM G8 | ≤10 |
Dielectri Breakdown Voltage 23 ºC MV/N | ASTM D149 | ≥25 |
