3-Layer High Density Coating (3-LPE & 3-LPP) for Steel Pipe

 

The Hall Longmore facility is fully equipped with the latest “sleeve-type” and “side head extrusion” 3-layer coating processes.

  • Sleeve-type extrusion designed for pipe diameters from 219 mm to 610 mm
  • Side extrusion designed for pipe diameters up to 813 mm

3-Layer Coating is the generic term for a pipe outer coating comprising of Fusion Bonded Expoxy base or primer coat, an extruded copolymer adhesive intermediate layer and an extruded polyethylene top coat, as described by System B1 of the Canadian Specification Z245.21-02.

Fully equipped, modern on-site laboratories conduct tests on all 3-layer coatings in accordance with CSA Z245.20/21-02.

These tests include: Cathodic Disbondment; Peel Adhesion; Elongation; Impact; Dust and Debris and EID (Holiday testing).

The high performance features of 3-layer coating include:

  • High impact resistance
  • High corrosion resistance with cathodic protection
  • Excellent resistance to soil stresses
  • Highly impermeable to water penetration
  • Superior adhesion to steel
  • Good flexibility
  • Excellent insulation properties with long term resistance to stray current
  • Can be customised to specific operating conditions by varying the thickness of the coating in line with specifications.

Downloads

3-LAYER COATINGS BROCHURE3-LAYER COATINGS BROCHURE

PDF document
885KB

 

3-LAYER DATA & TECHNICAL DETAILS3-LAYER DATA & TECHNICAL DETAILS

PDF document
299KB

 

Manufacturing Process

 

Latest News

Jun 2019

Hall Longmore continues their successful partnership with Stemcor suppling pipe for export to the USA.
We look forward to supplying this a client who has supported us for many years.

May 2019

Hall Longmore Continues to Deliver quality pipe for the Rand Water Board
We look forward to being part of this values chain.

Downloads

Useful Links

SABS Engineering Info ASTM API STEASA ASTPM DQS