Stockist & supplier IS 1239 (Part 1) · IS 3589 · ASTM A53 Type E · API 5L
ERW Pipes — IS 1239, IS 3589, ASTM A53 & API 5L
ERW pipe is steel pipe formed from coil and joined by a longitudinal electric-resistance weld. Teshi Group stocks and supplies ERW pipe to IS 1239, IS 3589, ASTM A53 Type E and API 5L for water, gas, utility and structural lines. Quotes are sent in 24–48 hours.
Also called: electric resistance welded pipe, ERW steel pipe, MS ERW pipe, welded line pipe
What is an ERW Pipe?
Electric resistance welded (ERW) pipe is made by cold-forming steel strip into a tube and fusing the edges with high-frequency electric current, without filler metal. The weld is normally heat-treated and inspected online. ERW pipe has consistent wall thickness and lower cost than seamless, so it is the usual choice for water mains, fire-fighting lines, low and medium pressure gas, compressed air, structural columns and casing. IS 1239 Part 1 covers smaller nominal bores, IS 3589 covers larger outside diameters for water and sewage, and API 5L ERW is used for line pipe.
Key features
- Stockist and supplier — sourced from ERW mills; Teshi does not manufacture pipe
- Black (uncoated), galvanised, or with primer / coating as ordered
- Standards: IS 1239 Part 1, IS 3589, ASTM A53 Type E, API 5L PSL1/PSL2
- Plain, bevelled or screwed-and-socketed ends
- Mill hydrostatic test and weld-seam inspection per the standard
- Can be supplied with matching flanges and butt weld fittings made by Teshi
Specification
| Supply | Stockist & supplier — Teshi Group, India |
|---|---|
| Standards | IS 1239 (Part 1), IS 3589, ASTM A53 Type E, API 5L (PSL1 / PSL2) |
| Size range | IS 1239 Part 1: nominal bore 6–150 mm; IS 3589: larger OD water and sewage pipe; other sizes against order |
| Classes / walls | IS 1239: Light, Medium, Heavy; IS 3589: Fe 330, Fe 410, Fe 450; ASME B36.10M schedules for ASTM/API pipe |
| Grades | ASTM A53 Gr A/B; API 5L Gr B, X42–X70 |
| Finish | Black, hot-dip galvanised, varnished or coated as ordered |
| Ends | Plain, bevelled, screwed and socketed |
| Testing | Hydrostatic test and weld-seam NDT per the governing standard |
| Documents | Mill test certificate to EN 10204 3.1; EN 10204 3.2 / third-party inspection when the order specifies |
Applications
- Water supply and fire-fighting mains
- Low and medium pressure gas distribution
- Compressed air and utility lines in plants
- Structural columns, scaffolding and fencing
- Casing and piling pipe
Material grades
All gradesFAQ
ERW Pipe: common questions
Is ERW pipe acceptable for pressure piping?
Yes, within the limits of the design code. ASTM A53 Type E and API 5L ERW are used for pressure service, but codes such as ASME B31.3 apply a weld joint factor, and some specifications require seamless for high-temperature or critical service.
What is the difference between IS 1239 and IS 3589?
IS 1239 Part 1 covers smaller tubes up to 150 mm nominal bore in Light, Medium and Heavy classes. IS 3589 covers larger outside-diameter welded pipe for water, gas and sewage, specified by grade and wall thickness.
Can I get galvanised ERW pipe?
Yes. ERW pipe can be supplied hot-dip galvanised. See our GI pipe page for IS 1239 and IS 3589 galvanised pipe. Galvanised pipe is used mainly for water, fire-fighting and plumbing service.
Does Teshi manufacture ERW pipe?
No. Teshi Group is a stockist and supplier of ERW Pipe, sourced from established mills and supplied with the original mill test certificate. Teshi is an OEM manufacturer of flanges, fittings, fasteners, valves and custom fabrications, which can be ordered with it.
Need a size or grade not listed here?
We source against your specification from approved mills, with mill test certificates and inspection before dispatch.
Send us your specificationTraceability
From mill heat to your site
- 01
Approved mill material
Received against the mill certificate; heat number registered.
- 02
Forging & machining
Heat number carried through every stage in our Indian works.
- 03
PMI, dimensional & NDT
Every lot inspected to the governing standard; TPI witness on request.
- 04
Stamped & certified dispatch
Hard-stamped pieces with EN 10204 3.1 / 3.2 certificates.
Quick RFQ
Quote for ERW Pipe in 24–48 hours
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