Description
pipe 1-1/4″ sch-40
GM local manufacturing Made in Pakistan. Upvc Pipes and fittings for water, drain, sewer & ventilation supplier distributor contact 0322-3540656
What is gm upvc pipe 1-1/4″ sch-40 4meter ?
✅ What does “1-1/4″ SCH-40 uPVC pipe” mean
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uPVC — “un plasticized PVC” (polyvinyl chloride). It’s PVC without plasticizers, so it’s rigid, durable, chemical-resistant, non-corrosive.
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1-1/4″ nominal size — The nominal (common) size designation. For SCH-40 uPVC, “1¼ inch” corresponds to a standard outside diameter (OD) and wall thickness per the standard dimension chart.
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SCH 40 (Schedule 40) — This is a schedule rating that defines the wall thickness for a given nominal size, which in turn affects pressure rating and structural strength.
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Standard compliance — These pipes are generally manufactured per ASTM D1785.
Specification gm upvc pipe 1-1/4″ sch-40 4meter
According to standard dimension tables for uPVC Schedule 40:
| Attribute | Typical Value for 1-1/4″ SCH-40 |
|---|---|
| Outside Diameter (OD) | ~ 42.16 mm (about 1.66″) |
| Wall Thickness (minimum) | ~ 3.56 mm |
| Typical Wall Thickness Range | 3.56 mm – 4.07 mm (depending on manufacturer) |
| Typical Working Pressure (at ~23 °C) | ~ 26 kg/cm² (or ≈ 370 psi per some suppliers) |
| Standard Length | Commonly supplied in 6-meter lengths (some in 3 m) |
| Material Properties | Non-corrosive, chemical-resistant, UV-stabilized (if treated), lead-free, smooth bore (low friction), long lifespan. |
Advantages of uPVC SCH-40:
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Resistant to corrosion, rust, chemical attack.
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Hygienic and safe for potable water (lead-free).
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Lightweight and easier to transport/handle than metal or GI pipes.
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Smooth internal surface reduces friction & prevents scaling/deposits — good for water flow over long duration.
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Resistant to UV and weather (for outdoor or exposed installations), if UV-stabilized.
🛠️ Installation (General Practice)
When installing a 1-1/4″ SCH-40 uPVC pipe, typical steps/considerations include:
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Use solvent-weld joints (glue/joint cement) for plain-end pipes — this is standard for uPVC SCH 40 pipes.
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Ensure pipe ends are clean, cut square, and dry before applying solvent cement/fitting to get leak-proof, durable joints. (Common practice for uPVC plumbing.)
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Avoid using threaded connections if possible: many standards and suppliers note that SCH-40 pipes are for unthreaded (solvent-weld) joints, and threading is not recommended. For outdoor or exposed installations: use UV-stabilized uPVC or provide shade/coating to prevent degradation over long-term sun exposure.
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Installation practices (alignment, slope for drainage, support/clamping, avoiding sharp bends) are the same as for other rigid plastic pipes — allow some expansion/contraction depending on temperature, and support appropriately.
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