Lined Pipe Systems

Pexmart lined pipe systems is a multinational company, specializing in pipeline construction, internal HDPE pipe lining, pipe rehabilitation and plastic pipe systems.

Pexmart lined pipe systems are ideal for corrosive and abrasive products such as acid water, crude oil, slurry, wet gas, raffinate and effluent. HDPE liner provides old or new steel pipes with greater strength and protection from erosion and corrosion by closing off the steel pipe inside walls from the flow.

Pexmart lined pipe systems has several applications

  • Repair and rehabilitate old existing abrasion pipelines.
  • HDPE lined fittings (Bends, Tees, concentric, eccentric, laterals, etc).
  • HDPE liner provides the new or old steel pipe with greater strength and protection from erosion and corrosion by closing off the steel pipe inside walls from the flow.
  • The interior walls of the HDPE liner are also very smooth, resulting in superior fluid flow due to a reduction in resistance and friction.
  • All these properties make Pexmart lined pipe ideal for carrying corrosive and abrasive products such as acid water, crude oil, slurry, wet gas, raffinate and effluent.

Internally Lined HDPE Pipe

300NB (324) SANS 719 API 5L X42 steel pipe x 6 mm wall x 12.192 m long F/B/E 4000/3 internally lined with HDPE x 10 mm wall S/B/E externally coated silver oxide.

300NB (324) SANS 719 API 5L X42 steel pipe
Steel pipe

HDPE Lined Fittings

  • Our lined pipe systems are SABS and SAPPMA approved and have successfully passed all ASTM F1545 requirements.
  • All our HDPE lined fittings are pressure tested at 1.5 times our customer’s service pressure, ensuring world-class performance.

The PEXMART turnkey integrity solution

Our overall philosophy is to provide the most value to each of our customers by delivering the ultimate pipeline turnkey solution. As a recognized leader, Pexmart strives to meet the challenges of the pipeline industry by offering the best corrosion protection systems, educating our customers on regulations and compliance, and providing knowledgeable experts in pipeline integrity and management.

PEXMART installation team

Our civil construction team possesses extensive knowledge of local terrains and conditions and has a proven track record of timely project delivery.

installation team

Lined pipe system include

  • Civil road construction for optimum pipeline route—including earthworks (anchor blocks, loops, and retaining walls), site clearing, cut and fill, rehabilitation, and dust suppression.
  • Construction and repair of roads and access ways.
  • Site clearing in preparation for pipeline construction.
  • Site rehabilitation, including pipeline restoration.
  • Lay down areas and storage yards.
  • Construction of pipe storage berm walls.
  • Pipeline culvert crossings.
HDPE Lined Fittings

Steel pipeline construction and welding – ASTM-F – 1545

Welding quality and proper seam alignment in pipeline welding are crucial to avoid defects during the HDPE lining process.

Continuous HDPE lining system

  • This system provides a continuous HDPE liner that protects the carbon steel pipeline from all internal corrosive elements.
  • It reduces friction and operating pressures, yielding substantial cost savings.
  • The process uses a folded HDPE liner, custom extruded to the exact internal diameter, which is inserted into the steel pipe.

Pipeline Pre-Commissioning and Commissioning

  • After construction and before service, pipelines undergo key inspections, cleaning, and pressure testing (hydro or pneumatic) to ensure compliance with owner requirements.
  • Pre-commissioning includes bolt-up cleaning, torque inspections, CCTV camera inspections, and more.