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IS 427 : 2020Wrought Copper and Copper Alloy Tubes for General Engineering

Link points to Internet Archive / others. Not hosted by InfraLens. Details

ASTM B88 · EN 1057

CurrentFrequently UsedSpecificationBIMMaterials Science · Aluminium and Non-Ferrous Metals

Link points to Internet Archive / others. Not hosted by InfraLens. Details

IS 427:2020 is the Indian Standard (BIS) for wrought copper and copper alloy tubes for general engineering. IS 427 covers copper and copper alloy tubes for plumbing, HVAC refrigerant lines, heat exchangers, medical gas, and general engineering. DHP copper (deoxidized, high phosphorus) is the standard for plumbing and refrigeration. Copper tubes are naturally antimicrobial and corrosion resistant.

Specification for seamless and welded copper and copper alloy tubes for general engineering, plumbing, and heat exchanger applications.

Overview

Status: Current
Usage level: Frequently Used
Domain: Materials Science — Aluminium and Non-Ferrous Metals
Type: Specification

International equivalents

ASTM B88 · ASTM International (US)EN 1057:2006 · CEN (EU)

Typically used with

IS 730 IS 319 IS 410 IS 6911

Also on InfraLens for IS 427

4Key values 3Tables 2FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

! Copper tubes for refrigeration MUST be Type ACR (clean, capped, dehydrated) — contamination causes compressor failure.

! DHP copper (phosphorus deoxidized) is mandatory for brazing/soldering — ETP copper becomes brittle when brazed.

! Soft (annealed) tubes are used in rolls for refrigeration/AC. Hard-drawn tubes for plumbing supply lines.

! Copper plumbing is more expensive than CPVC but lasts 50+ years and is naturally antibacterial.

! For medical gas systems, copper tubes per IS 427 with Type L wall thickness are the standard worldwide.

Frequently referenced clauses

Cl. 4 — Alloys: ETP copper, DHP copper, brass, cupronickel

Cl. 5 — Tempers: O (annealed), H (hard drawn)

Cl. 6 — Dimensions and tolerances

Cl. 7 — Mechanical properties

Cl. 8 — Tests: flattening, expansion, eddy current

copper tubebrass tubeplumbing tubeAC tubeheat exchangerrefrigeration tube

International Equivalents

Similar International Standards

ASTM B88ASTM International (US)

HighCurrent

Standard Specification for Seamless Copper Water Tube

Both cover seamless copper tubes for plumbing with similar Type K/L/M wall thickness designations.

EN 1057:2006CEN (EU)

HighCurrent

Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and heating applications

Both specify seamless copper tubes for plumbing and heating applications.

Key Differences

≠IS uses Type 1/2/3. ASTM uses Type K/L/M. EN uses R220/R250/R290. Different names for similar wall thickness categories.

Key Similarities

≈All specify DHP (C12200) copper as the standard plumbing/heating tube material.

Parameter Comparison

Parameter	IS Value	International	Source
DHP copper OD (plumbing)	15, 22, 28, 35, 42, 54mm	Similar metric sizes (EN) or 1/2" to 2" (ASTM)	ASTM B88 / EN 1057

⚠ Verify details from original standards before use

Key Values4

Quick Reference Values

DHP copper (C12200) OD range6mm to 159mm

Annealed copper tensileMin 220 MPa

Standard AC tubing OD6.35mm (1/4"), 9.52mm (3/8"), 12.7mm (1/2")

Plumbing tube (Type L)15mm, 22mm, 28mm, 35mm, 42mm, 54mm

Tables & Referenced Sections

Key Tables

Table 1 — Chemical composition by alloy

Table 2 — Mechanical properties by alloy and temper

Table 3 — Dimensions (OD, wall thickness)

Frequently Asked Questions2

What type of copper tube for AC refrigerant lines?+

DHP copper (C12200), annealed (soft), in ACR (Air Conditioning and Refrigeration) grade — clean, capped, and charged with nitrogen. Available in coils. Common sizes: 1/4" (6.35mm) and 3/8" (9.52mm) for residential AC.

Copper tube vs CPVC for plumbing?+

Copper: more expensive, longer life (50+ years), can handle hot water, antimicrobial, recyclable. CPVC: cheaper, easier installation (solvent cement), adequate for 25-30 years, lighter. Copper is premium; CPVC is standard in Indian residential construction.

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

BOQ Builder·Auto-BOQ from dimensions, DSR ratesNEW→BidEasy·Government tenders, searchableLIVE→

IS 427 : 2020Wrought Copper and Copper Alloy Tubes for General Engineering

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

ASTM B88 · EN 1057

CurrentFrequently UsedSpecificationBIMMaterials Science · Aluminium and Non-Ferrous Metals

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

Specification for seamless and welded copper and copper alloy tubes for general engineering, plumbing, and heat exchanger applications.

Overview

Status: Current
Usage level: Frequently Used
Domain: Materials Science — Aluminium and Non-Ferrous Metals
Type: Specification

International equivalents

ASTM B88 · ASTM International (US)EN 1057:2006 · CEN (EU)

Typically used with

IS 730 IS 319 IS 410 IS 6911

Also on InfraLens for IS 427

4Key values 3Tables 2FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

! Copper tubes for refrigeration MUST be Type ACR (clean, capped, dehydrated) — contamination causes compressor failure.

! DHP copper (phosphorus deoxidized) is mandatory for brazing/soldering — ETP copper becomes brittle when brazed.

! Soft (annealed) tubes are used in rolls for refrigeration/AC. Hard-drawn tubes for plumbing supply lines.

! Copper plumbing is more expensive than CPVC but lasts 50+ years and is naturally antibacterial.

! For medical gas systems, copper tubes per IS 427 with Type L wall thickness are the standard worldwide.

Frequently referenced clauses

Cl. 4 — Alloys: ETP copper, DHP copper, brass, cupronickel

Cl. 5 — Tempers: O (annealed), H (hard drawn)

Cl. 6 — Dimensions and tolerances

Cl. 7 — Mechanical properties

Cl. 8 — Tests: flattening, expansion, eddy current

copper tubebrass tubeplumbing tubeAC tubeheat exchangerrefrigeration tube

International Equivalents

Similar International Standards

ASTM B88ASTM International (US)

HighCurrent

Standard Specification for Seamless Copper Water Tube

Both cover seamless copper tubes for plumbing with similar Type K/L/M wall thickness designations.

EN 1057:2006CEN (EU)

HighCurrent

Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and heating applications

Both specify seamless copper tubes for plumbing and heating applications.

Key Differences

≠IS uses Type 1/2/3. ASTM uses Type K/L/M. EN uses R220/R250/R290. Different names for similar wall thickness categories.

Key Similarities

≈All specify DHP (C12200) copper as the standard plumbing/heating tube material.

Parameter Comparison

Parameter	IS Value	International	Source
DHP copper OD (plumbing)	15, 22, 28, 35, 42, 54mm	Similar metric sizes (EN) or 1/2" to 2" (ASTM)	ASTM B88 / EN 1057

⚠ Verify details from original standards before use

Key Values4

Quick Reference Values

DHP copper (C12200) OD range6mm to 159mm

Annealed copper tensileMin 220 MPa

Standard AC tubing OD6.35mm (1/4"), 9.52mm (3/8"), 12.7mm (1/2")

Plumbing tube (Type L)15mm, 22mm, 28mm, 35mm, 42mm, 54mm

Tables & Referenced Sections

Key Tables

Table 1 — Chemical composition by alloy

Table 2 — Mechanical properties by alloy and temper

Table 3 — Dimensions (OD, wall thickness)

Frequently Asked Questions2

What type of copper tube for AC refrigerant lines?+

Copper tube vs CPVC for plumbing?+

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 427 : 2020Wrought Copper and Copper Alloy Tubes for General Engineering

Overview

International Equivalents

Key Values4

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions2

QA/QC Inspection Templates

More related

IS 427 : 2020Wrought Copper and Copper Alloy Tubes for General Engineering

Overview

International Equivalents

Key Values4

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions2

QA/QC Inspection Templates

More related