Stainless Steel 430 Welded Tubes Supplier & Manufacturer in USA
USA Piping Solution is a trusted supplier and manufacturer of Stainless Steel 430 Welded Tubes for industrial, architectural, and appliance manufacturing applications in the United States and internationally. Our SS 430 Welded Tubes (UNS S43000, DIN 1.4016) are produced by forming flat-rolled ferritic stainless steel strip and joining the longitudinal seam using high-frequency Electric Resistance Welding (ERW), or by Electric Fusion Welding (EFW) for larger diameter products. The welded manufacturing process makes these tubes highly cost-competitive compared to seamless equivalents while still meeting the stringent requirements of ASTM A249 TP430, ASTM A269 TP430, ASTM A554 TP430, and related standards. SS 430 Welded Tubes are available in round, square, and rectangular cross-sections with a bright annealed or 2B surface finish, and polished options for architectural use. All tubes are supplied with complete documentation including heat certificates and dimensional inspection reports.
SS 430 Welded Tube Specifications
Parameter | Details |
|---|---|
Grade | SS 430 Welded Tube, ASTM A249 TP430, ASTM A269 TP430, UNS S43000, DIN 1.4016 |
Standards | ASTM A268 / ASME SA268, ASTM A554. |
Manufacturing Method | Electric Resistance Welding (ERW), Electric Fusion Welding (EFW) |
OD Range (ERW) | 1 NB to 16 NB (25 mm to 406 mm) |
OD Range (EFW) | 8 NB to 100 NB (200 mm to 2500 mm) |
Wall Thickness | Schedule 10 to Schedule 80; 1.0 mm to 20 mm typical |
Length | Single Random (4 m to 7 m), Double Random (8 m to 12 m), Cut Length |
Form | Round, Square, Rectangular |
Surface Finish | 2B, Bright Annealed (BA), No.4, No.8 Mirror, Satin, Electropolished |
Certification | EN 10204 3.1 / 3.2; Third-party on request |
Chemical Composition
Grade | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr |
|---|---|---|---|---|---|---|
430 | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | 16.0 |
Mechanical Properties
Property | Min Value |
|---|---|
Tensile Strength | 450 MPa (65 ksi) |
Yield Strength 0.2% offset | 205 MPa (30 ksi) |
Elongation in 50 mm | 25% |
Hardness Brinell (HB) | max 175 |
Density | 7750 kg/m3 |
Size Chart of 430 Stainless Steel Welded Tubes
Square Tube | Rectangle Tube | ||
|---|---|---|---|
Size(mm) | Wall Thickness (mm) | Size(mm) | Wall Thickness (mm) |
70*70 75*7580*80 90*90100*100 | 1.5-5.75 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
20*2025*2530*30 | 1.2-3.0 | 20*40 30*40 | 1.2-3.0 |
40*40 50*50 | 1.2-4.75 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
120*120 140*140 150*150 | 2.5-10.0 | 160*80 100*150140*80 100*180200*100 | 2.5-10.0 |
250*250 300*300350*350 | 4.5-15.75 | 250*200 300*200 350*200 350*250450*250 400*300 500*200 | 4.5-15.75 |
160*160 180*180200*200 | 3.5-12.0 | 200*150 250*150 | 3.5-12.0 |
280*280400*400 | 5.0-20.0 | 400*350 400*250500*250 500*300400*600 | 5.0-20.0 |
Types of Stainless Steel 430 Welded Tubes
- SS 430 ERW Tubes (Electric Resistance Welded)
- SS 430 EFW Tubes (Electric Fusion Welded)
- SS 430 ASTM A554 Mechanical Welded Tubes
- SS 430 Square Welded Tubes
- SS 430 Rectangular Welded Tubes
Weld Seam Quality and Testing
Test / Inspection | Method |
|---|---|
Flattening Test | Per ASTM A249 / A268 requirements |
Flare Test | Applied to weld seam to verify integrity |
Eddy Current / Hydrostatic Test | For leak detection across the seam |
Visual Inspection | Internal and external surface examination |
Dimensional Check | OD, wall thickness, length per standard tolerance |
Tensile and Yield Test | Per heat / lot basis |
Applications of SS 430 Welded Tubes
- Automotive trim, exhaust, and decorative components
- Household appliances: refrigerators, washing machines, dishwashers
- Architectural cladding, railing, and curtain walling
- Food and beverage processing equipment
- Furniture and display fixtures
- Heat exchanger and condenser units (light duty)
Frequently Asked Questions (FAQs)
Q1: We are ordering SS 430 ERW welded rectangular tubes for display rack fabrication. Do you supply with a No.4 brushed finish ready for laser cutting?
A: Yes. SS 430 ERW rectangular tubes in No.4 brushed finish are available and are laser-cutter friendly. We can supply in standard lengths or cut to your drawing dimensions. Satin and hairline finishes are also available on request.
Q2: Will the ERW weld seam on SS 430 welded tubes affect corrosion resistance in a mild acidic food processing environment?
A: Post-weld annealing restores the microstructure uniformly. In mild organic acid or food-grade environments, properly annealed SS 430 ERW tubes perform consistently. For harsher chemical service, seamless tubes are recommended. We can advise further.
Q3: Can you supply ASTM A554 and A268 welded tubes with eddy current NDT certificates for our condenser tube bundle project?
A: Yes. SS 430 welded tubes per ASTM A554 and A268 with eddy current testing (ECT) certification are available. We coordinate with NABL-accredited labs and third-party agencies. ECT reports are provided alongside EN 10204 3.1 MTRs.
Q4: What is the lead time for SS 430 EFW welded tubes in sizes above 16 NB? We are working on an aggressive project timeline.
A: SS 430 EFW tubes in large diameters (16 NB and above) typically have 4 to 6 week lead times from order confirmation. For urgent requirements, we can check partial stock availability and expedite mill orders. Share your quantity and OD details.
Q5: Our architectural project specifies SS 430 welded square tubes with a mirror (No.8) finish. Can you confirm availability and minimum order quantity?
A: SS 430 square welded tubes in No.8 mirror finish are available in standard sizes. MOQ is 50 kg for mirror-polished items. Custom sizes for architectural projects are produced on request with 3 to 4 week production lead time.
Related Products
- SS 430 Tubes
- SS 430 Seamless Tubes
- SS 431 Welded Tubes
- SS 904L Welded Tubes
- SS 304 Welded Pipe & Tube
- SS 316 Welded Pipes & Tubes
- Stainless Steel Welded Pipes and Tubes
- Stainless Steel 409 Pipes and Tubes
- Stainless Steel 410 Pipes and Tubes
- Stainless Steel Flanges
Source SS 430 Welded Tubes for Your Project Today
Architectural, food-grade, and industrial grades in stock. ERW, EFW, square, and rectangular forms available. Same-day quotes with full weld certification and dimensional reports.
Request a Quote