SHK PPR-C Pipes & Fittings · Shreeharikrishna Group

PPR Piping Systems

Triple-layer polypropylene random copolymer (PPR-C) networks for compressed air and hot/cold water — corrosion-free, heat-fused joints and up to 50-year service life. Two dedicated SHK product lines: Pneumato for air, Aqua for water.

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IS 15801ISI approved
PN6–20Pressure ratings
16–400mm size range
50 yrService life

What is
SHK PPR-C?

Compressed Air
Hot / Cold Water
Potable Water
Chilled Water
Solar Heaters
RO Plants

SHK PPR-C pipes from Shreeharikrishna Group replace GI, MS and CPVC pipework for workshops and utility networks. Triple-layer construction — UV-stabilised outer layer, reinforced middle core and anti-microbial inner bore — delivers leak-proof socket-fusion joints, zero internal scaling and very low thermal conductivity (0.23 W/mK). Manufactured per IS 15801:2008 with ISO 9001 certification, WRAS-approved material and in-house R&D testing. ITT specifies the right PN rating, supports layout planning and commissions the network safely.

Key benefits of PPR-C

Eight engineering advantages that make SHK PPR-C a cost-effective alternative to metal and CPVC pipework — from the SHK product catalogue.

PPR-C does not rust, scale or corrode internally. Unlike MS/GI pipework, there is no particle contamination reaching pneumatic tools, valves or potable water points — maintaining clean air and water delivery over the full service life.

Heat-fusion welding at 260°C creates a homogeneous bond between pipe and fitting — no threaded leakage points, no solvent adhesive joints. Negligible leakage risk compared with GI threading or CPVC solvent welding.

SHK PPR-C is rated for up to 50 years of service versus 3–5 years for MS pipes and 15–20 years for CPVC. Maintenance cost remains negligible for 15–20 years under normal operating conditions.

Thermal conductivity of 0.23 W/mK (versus 45 W/mK for MS) means negligible heat loss on hot-water lines and reduced insulation thickness on chilled-water supply — typically half to one-third that required for metal pipe.

Anti-microbial inner layer with friction factor of approximately 1.5 ft/100 ft (versus 4 ft/100 ft for CPVC and very high friction in corroded MS). Helps maintain stable pressure to distant machine drops and pneumatic tools.

Very light sections reduce transport cost by up to 3× versus metal pipe. Socket-fusion jointing is faster than MS welding or GI cut-and-thread work — lowering both CAPEX and installation labour.

Operating range from −8°C to 95°C covers hot/cold water, chilled water, solar heaters, cooling towers and many process applications. Glass-fibre reinforced Thermo grade reduces thermal expansion on long runs.

CFTRI-approved material with anti-microbial inner layer prevents bacteria and algae growth. WRAS-approved for potable water. Suitable for RO drinking water plants, pharmaceutical lines and clean liquid food supply.

Application-led PPR design

Two dedicated SHK product lines — Pneumato for compressed air and Aqua for hot/cold water. Select a product line to see recommended pipe grade and key design points.


SHK Pneumato — compressed air

Flame-retardant, triple-layer PPR-C designed for compressed air distribution. UL 94 rated outer layer with glass-fibre reinforced middle core. Smooth anti-microbial bore with low friction factor helps maintain stable pressure to pneumatic tools, packaging lines and CNC machine utilities.

  • Compressed air for workshops and industrial plants
  • UL 94 flame-retardant outer layer for added safety
  • PN16 (SDR 7.4) typical for industrial air lines
  • Size using SHK CFM vs pipe diameter selection chart
  • Support every 60–90 cm with expansion allowance

SHK Pneumato blue PPR compressed air pipes and fittings — studio product photo

SHK Aqua — water supply

Triple-layer PPR-C for hot and cold potable water, chilled water, cooling towers, solar water heaters and RO plants. Anti-microbial inner layer prevents bacteria and algae growth; UV-stabilised outer layer extends outdoor service life.

  • Hot/cold water supply (−8°C to 95°C operating range)
  • Chilled water, cooling towers & condenser lines
  • Solar water heater and RO drinking water plants
  • IS 15801 approved — ISI marked product
  • Negligible heat loss with 0.23 W/mK conductivity

SHK Aqua green PPR pipes and fittings — studio product photo

PPR vs MS & CPVC piping

Technical and commercial comparison from the SHK catalogue — see why PPR-C wins on lifecycle cost, air quality and installation speed.


Property
SHK PPR-C
CPVC
MS / GI
Service life
50 years
15–20 years
3–5 years
Joint method
Socket fusion — leak proof
Solvent adhesive
Threaded / welded
Leakage risk
Negligible
High (solvent joints)
High (threaded)
Thermal conductivity
0.23 W/mK
0.3 W/mK
45 W/mK
Friction factor
~1.5 ft/100 ft
~4 ft/100 ft
Very high
Corrosion
Excellent resistance
Excellent
Nil resistance
Temperature range
−8°C to 95°C
10°C to 80°C
High temp capable
Maintenance cost
Negligible 15–20 yr
High after 5–6 yr
High after 3–4 yr
CAPEX vs PPR
Baseline — lowest
45–50% higher
30–35% higher
OPEX vs PPR
Lowest
20–25% higher
55–60% higher
Installation time
Low — fusion jointing
Low — solvent joints
Very high — weld/thread
Food grade / hygienic
CFTRI approved
Non-hygienic joints
Poor — corrosion

SHK product lines

Two triple-layer PPR-C product ranges — Pneumato for compressed air and Aqua for hot/cold water — with precision-moulded fittings (20 mm to 400 mm) and fusion accessories, specified as one integrated utility network by ITT.

SHK Pneumato blue flame-retardant PPR pipes and fittings — studio product photo
Blue · Compressed Air

SHK Pneumato

Flame-retardant triple-layer PPR-C engineered for compressed air. UL 94 rated outer layer with glass-fibre reinforcement and low-friction bore.

PN16UL 94Blue
  • Most energy-saving pipes for air applications
  • Low friction bore — 1.5 ft/100 ft
  • Compressed air to packaging & CNC utilities
SHK Aqua green PPR pipes and fittings — studio product photo
Green · Hot / Cold Water

SHK Aqua

Triple-layer PPR-C for hot/cold water, chilled water and clean fluid supply. UV-stabilised outer, reinforced core and anti-microbial inner layer.

PN10–PN16IS 15801Green
  • Anti-microbial inner layer for potable water
  • Wide temperature range −8°C to 95°C
  • WRAS approved, CFTRI tested material

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Socket fusion welding

Leak-proof joints in three steps — cut, heat and weld. ITT-trained installers follow SHK fusion parameters for every joint.

SHK PPR socket fusion welding — technician heat-fusing green pipe and fitting at 260°C
1CuttingCut pipe square with a pipe cutter. Deburr and mark weld depth.
2HeatingHeat pipe and fitting in fusion dies to 260°C for the specified time.
3WeldingJoin immediately, hold without rotation until cooling completes.
Pipe dia. (mm) Weld depth (mm) Heat (sec) Weld (sec) Cool (min)
20 14.5 6 4 2
32 18.0 8 6 4
50 23.5 18 6 4
63 27.5 24 8 6
90 33.0 40 8 6
110 37.0 52 10 8

Technical specifications

Complete SHK PPR-C sizing per IS 15801:2008 and DIN 8077 — select product line and pressure rating. Fittings available 20 mm to 400 mm for both lines.


Hot / cold waterPN10 · 32–315 mmPN16 · 20–315 mmPN20 · 20–315 mmPN6 · 200–400 mm−8°C to 95°C



OD (mm) Size Wall (mm) ID (mm) kg/m
32 1″ 2.9 26.2 0.261
40 1¼” 3.7 32.6 0.412
50 1½” 4.6 40.8 0.638
63 2″ 5.8 51.4 1.010
75 2½” 6.8 61.4 1.410
90 3″ 8.2 73.6 2.030
110 4″ 10.0 90.0 3.010
160 6″ 14.6 130.8 6.380
200 8″ 18.2 163.6 9.920
250 10″ 22.7 204.6 15.528
315 12″ 28.6 257.8 24.683
OD (mm) Size Wall (mm) ID (mm) kg/m
20 ½” 2.8 14.4 0.148
25 ¾” 3.5 18.0 0.230
32 1″ 4.4 23.2 0.370
40 1¼” 5.5 29.0 0.575
50 1½” 6.9 36.2 0.896
63 2″ 8.6 45.8 1.410
75 2½” 10.3 54.4 2.010
90 3″ 12.3 65.4 2.870
110 4″ 15.1 79.8 4.300
160 6″ 21.9 116.2 9.040
200 8″ 27.4 145.2 14.180

250 & 315 mm available in PN10 grade. Allowable working pressure derates with temperature per DIN 8077.

OD (mm) Size Wall (mm) ID (mm) kg/m
20 ½” 3.4 13.2 0.172
25 ¾” 4.2 16.6 0.266
32 1″ 5.4 21.2 0.434
40 1¼” 6.7 26.6 0.671
50 1½” 8.3 33.4 1.040
63 2″ 10.5 42.0 1.650
75 2½” 12.5 50.0 2.340
90 3″ 15.0 60.0 3.360
110 4″ 18.3 73.4 5.010
160 6″ 26.6 106.8 10.600
200 8″ 34.0 132.0 17.150
OD (mm) Size Wall (mm) ID (mm) kg/m
200 8″ 11.4 177.6 7.050
250 10″ 14.2 221.6 10.940
315 12″ 17.9 279.2 17.572
400 16″ 23.5 353.0 28.060

SDR 17 / PN6 large-bore pipes. PN8 (SDR 13.6) also available on 200–315 mm.

Compressed airPN16 · 20–315 mmPN10 · 50–315 mmPN20 · 20–315 mmPN6 · 200–400 mmUL 94 flame retardant



OD (mm) Size Wall (mm) ID (mm) kg/m
20 ½” 2.8 14.4 0.148
25 ¾” 3.5 18.0 0.230
32 1″ 4.4 23.2 0.370
40 1¼” 5.5 29.0 0.575
50 1½” 6.9 36.2 0.896
63 2″ 8.6 45.8 1.410
75 2½” 10.3 54.4 2.010
90 3″ 12.3 65.4 2.870
110 4″ 15.1 79.8 4.300
160 6″ 21.9 116.2 9.040
200 8″ 27.4 145.2 14.180

PN16 (SDR 7.4) is the typical grade for industrial compressed air. Size using CFM vs pipe diameter chart.

OD (mm) Size Wall (mm) ID (mm) kg/m
50 1½” 4.6 40.8 0.638
63 2″ 5.8 51.4 1.010
75 2½” 6.8 61.4 1.410
90 3″ 8.2 73.6 2.030
110 4″ 10.0 90.0 3.010
160 6″ 14.6 130.8 6.380
200 8″ 18.2 163.6 9.920
250 10″ 22.7 204.6 15.528
315 12″ 28.6 257.8 24.683
OD (mm) Size Wall (mm) ID (mm) kg/m
20 ½” 3.4 13.2 0.172
25 ¾” 4.2 16.6 0.266
32 1″ 5.4 21.2 0.434
40 1¼” 6.7 26.6 0.671
50 1½” 8.3 33.4 1.040
63 2″ 10.5 42.0 1.650
75 2½” 12.5 50.0 2.340
90 3″ 15.0 60.0 3.360
110 4″ 18.3 73.4 5.010
160 6″ 26.6 106.8 10.600
200 8″ 34.0 132.0 17.150
OD (mm) Size Wall (mm) ID (mm) kg/m
200 8″ 11.4 177.6 7.050
250 10″ 14.2 221.6 10.940
315 12″ 17.9 279.2 17.572
400 16″ 23.5 353.0 28.060

Material properties

Density 0.91 g/cm³
Thermal conductivity 0.23 W/mK
Operating temperature −8°C to 95°C
Friction factor 1.5 ft / 100 ft
Young’s modulus 850 MPa

Pressure ratings

SDR 17 / PN6 200–400 mm large bore
SDR 13.6 / PN8 200–315 mm (optional)
SDR 11 / PN10 General utility lines
SDR 7.4 / PN16 Compressed air (typical)
SDR 6 / PN20 Higher pressure
Standard DIN 8077 / IS 15801

Product range summary

SHK Aqua PN6 · 200–400 mm · PN10 · 32–315 mm · PN16/20 · 20–315 mm
SHK Pneumato PN6 · 200–400 mm · PN10 · 50–315 mm · PN16/20 · 20–315 mm
Fittings 20 mm to 400 mm (both lines)
Pipe OD range 20 mm to 400 mm

SHK quality & ITT engineering

SHK Polymer Industries — part of Shreeharikrishna Group — manufactures PPR-C and HDPE pipes with ISO 9001 certification, in-house R&D and testing facilities. ITT integrates the network with your compressed-air or utility system.

ISI Approved

Pipes manufactured as per IS 15801:2008 with ISI mark CM/L-7200068512.

WRAS & CFTRI

WRAS approved material. Tested at CFTRI, CBRI and CIPET for quality assurance.

Make in India

Manufactured at SHK Polymer Industries with nationwide distributor support through ITT.

Site survey & sizing

CFM vs pipe diameter charts, support spacing and expansion calculations based on your operating temperature and pressure.

Fusion & commissioning

Trained installation teams, pressure testing and operator handover — from layout planning through to first production run.

Pan-India support

SHK manufacturing with nationwide distributor and service support through ITT for spare fittings and network expansion.

Frequently asked questions

Yes — SHK Pneumato flame-retardant PPR-C is specifically designed for compressed air. Use PN16 (SDR 7.4) grade, size correctly using CFM vs pipe diameter charts, and follow support spacing guidelines. ITT reviews pressure, temperature and oil compatibility before specifying.

SHK Aqua is for hot/cold water and clean fluid supply with anti-microbial inner layer and green colour coding. SHK Pneumato is flame-retardant (UL 94) and optimised for compressed air with blue colour coding. ITT selects the correct line based on your application.

PPR pipes are joined by socket heat fusion at 260°C — the pipe and fitting are heated and pressed together to form a homogeneous, leak-proof bond. No threading, welding or adhesive is needed. Proper fusion temperature, hold time and cooling time are critical for joint integrity.

PN10 (SDR 11) suits general utility lines. PN16 (SDR 7.4) is typical for compressed air. PN20 (SDR 6) handles higher pressure. Allowable working pressure reduces with temperature — refer to DIN 8077 derating tables. ITT selects the correct PN rating based on your operating conditions.

PPR is cost-effective for workshops, utilities and low-to-medium pressure air/water lines where corrosion resistance and fast installation matter. Modular aluminium (ShiftAir) suits higher-pressure industrial air networks needing mechanical fittings and easier future modification. ITT can recommend the right system after a site survey.

Use the SHK CFM vs pipe diameter vs pipe length selection chart in the catalogue. For example, 50 CFM over 500 ft typically needs 1½” pipe, while 200 CFM over 1000 ft needs 3″ pipe. ITT performs this sizing during site survey to avoid excessive pressure drop.

Plan your PPR piping network

Request a site survey for compressed air or water piping — or download the SHK product catalogue.