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Quality Stainless Steel ERW Welded Pipe Schedule 5S To 40S For Water Process Applications factory
Quality Stainless Steel ERW Welded Pipe Schedule 5S To 40S For Water Process Applications factory

Stainless Steel ERW Welded Pipe Schedule 5S To 40S For Water Process Applications

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Stainless Steel ERW Welded Pipe
Product Summary
The Stainless Steel ERW (Electric Resistance Welded) Pipe is manufactured by cold-forming stainless steel coils into a cylindrical shape and welding the longitudinal seam using high-frequency electric resistance welding technology. This process produces a pipe with a narrow, uniform weld seam that ...

Product Details

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Stainless Steel ERW Welded Pipe

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ERW Welded Pipe Schedule 5S

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ERW Welded Pipe Schedule 40S
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

The Stainless Steel ERW (Electric Resistance Welded) Pipe is manufactured by cold-forming stainless steel coils into a cylindrical shape and welding the longitudinal seam using high-frequency electric resistance welding technology. This process produces a pipe with a narrow, uniform weld seam that is virtually indistinguishable from the base metal after proper heat treatment. ERW pipes offer an excellent balance of corrosion resistance, dimensional accuracy, and cost-effectiveness, making them a popular choice for a wide range of industrial and commercial applications.

Product Specifications
ParameterDetails
StandardsASTM A312, A269, A358; EN 10217-7; JIS G3459
Available Grades304, 304L, 316, 316L, 201
Outer Diameter6 mm – 610 mm (1/8″ – 24″ NPS)
Wall Thickness0.5 mm – 12.7 mm (Schedule 5S, 10S, 40S; or custom)
LengthFixed lengths 3m / 6m, or random lengths up to 12m
Welding ProcessHigh-frequency ERW (induction or contact)
Heat TreatmentAnnealed after welding (standard)
Surface FinishPickled, passivated, or mill finish
End FinishPlain ends, beveled ends, threaded, or grooved
Chemical Composition (Typical Values, %)
GradeC ≤Si ≤Mn ≤P ≤S ≤CrNiMo
3040.080.752.000.0450.03018.0-20.08.0-10.5–
304L0.030.752.000.0450.03018.0-20.08.0-12.0–
3160.080.752.000.0450.03016.0-18.010.0-14.02.0-3.0
316L0.030.752.000.0450.03016.0-18.010.0-14.02.0-3.0
2010.150.755.5-7.50.0450.03016.0-18.03.5-5.5–

Composition per ASTM A312.

Mechanical Properties (at Room Temperature)
GradeTensile Strength (MPa) minYield Strength (MPa) minElongation (%) minHardness (HB) max
30451520535201
304L48517035201
31651520535217
316L48517035217
20151527535241

Tested in accordance with ASTM E8 / E8M.

Key Features of ERW Pipe

High Weld Quality – Narrow heat-affected zone (HAZ) with minimal contamination
Excellent Dimensional Accuracy – Consistent outer diameter and wall thickness
Cost-Effective – Lower production cost than seamless pipe
Wide Size Range – Available from 6 mm to 610 mm (1/8″ – 24″)
Corrosion Resistance – Full stainless steel composition throughout
Annealed Condition – Restores corrosion resistance and ductility after welding
Smooth Internal Surface – Low friction loss for fluid applications
Lightweight – Thin wall options available for weight-sensitive applications

ERW Manufacturing Process
StepDescription
1. Coil UnwindingStainless steel coil is unwound and leveled
2. FormingCoil is gradually cold-formed into a cylindrical shape
3. WeldingHigh-frequency electric current heats edges; pressure forges weld
4. Seam AnnealingWeld seam is post-weld heat treated to relieve stress
5. SizingPipe passes through sizing rollers to achieve final dimensions
6. CuttingPipe is cut to specified lengths
7. Heat TreatmentFull annealing restores corrosion resistance
8. TestingHydrostatic and eddy current testing performed
Dimensional Tolerances (ASTM A312)
ParameterTolerance
Outer diameter (OD)±0.4 mm for OD ≤ 48.3 mm; ±0.8% for larger
Wall thickness±12.5%
Length (fixed)+0 / -3 mm
Straightness0.2% of total length
OvalityWithin OD tolerance
Applications
Plumbing & Water Systems

Potable water distribution
Hot and cold water supply
Fire protection sprinkler systems
Solar thermal systems

HVAC

Chilled water lines
Condenser water piping
Steam and condensate lines (low pressure)
Refrigerant piping

Food & Beverage

Dairy and brewery process lines
Edible oil transfer
Beverage dispensing
Sanitary utility piping

Industrial

Compressed air systems
Cooling water circuits
Mild chemical transfer
Instrument air lines

Oil & Gas

Low-pressure gathering lines
Utility water systems
Fire water mains

Construction

Handrails and guardrails
Structural supports (light duty)
Scaffolding

ERW vs. Seamless vs. Other Welded Pipe
PropertyERW PipeSeamless PipeSAW / LSAW Pipe
Diameter Range6 – 610 mm6 – 610 mm300 – 1200+ mm
Wall ThicknessThin to mediumThin to heavyMedium to heavy
Weld SeamNarrow longitudinalNoneWide longitudinal
CostLow to mediumHighMedium to high
Dimensional AccuracyExcellentGoodGood
Corrosion ResistanceExcellent (annealed)ExcellentGood (with weld treatment)
Typical ApplicationsProcess lines, utilitiesHigh pressure, criticalLarge diameter pipelines
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For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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