ERW Steel Tubing For Automotive
01. Product Overview
Selecting ERW steel tubing for automotive-related manufacturing starts with matching the tube profile, steel grade, wall thickness and dimensional requirements to the intended component and production process.
We supply ERW carbon steel tubes in round, square and rectangular profiles. The tubes are produced by forming steel strip or coil into the required section and joining the edges through electric resistance welding, creating a longitudinal welded seam.
Depending on the required material, dimensions and technical specifications, ERW steel tubes can be considered for automotive-related fabrication, including suspension structures, shock absorber components, steering system structures, axle and shaft-related parts, and vehicle support structures.
The appropriate tube specification should be determined by the component design, subsequent machining or forming operations, and applicable product requirements.
02. Product Specifications & Selection
The main selection factors are cross-sectional profile, steel grade, dimensions, wall thickness, length and surface condition. These parameters should be confirmed against the component drawing or applicable product standard before ordering.
| Specification | Available Options / Details |
|---|---|
| Manufacturing process | Electric Resistance Welding (ERW) |
| Material | Carbon steel |
| Steel grades | ASTM A53 Grade A, ASTM A53 Grade B |
| Applicable standards | ASTM A53, ASTM A500 and API 5L, subject to product type and specification |
| Cross-sectional profiles | Round, square and rectangular |
| Round tube dimensions | Outside diameter (OD) and wall thickness |
| Square tube dimensions | Side length and wall thickness |
| Rectangular tube dimensions | Width, height and wall thickness |
| Length | Random length or fixed length |
| Surface condition | Black, hot-dip galvanized, electro-galvanized, anti-rust oil or protective coating |
| End finish | Plain end, beveled end, threaded end or grooved end |
For automotive mechanical components, the required steel grade and product standard should be checked against the component drawing and technical specification. ASTM A53, ASTM A500 and API 5L are listed within our general ERW product range; their applicability depends on the particular tube type and order requirements.
Dimensional requirements should identify the relevant outside diameter or section dimensions, wall thickness, length and tolerances. Where required by the application, ovality and straightness should also be specified.
03. Product Features & Applications
ERW manufacturing forms a continuous longitudinal welded tube from steel strip or coil. The resulting tubular section can be supplied in different profiles and prepared for subsequent cutting, fabrication and assembly.
Profile selection
Round tubes provide a tubular section for components designed around a circular profile. Square and rectangular tubes provide alternative sections for fabricated structures and support members.
Material and dimensional selection
Steel grade, wall thickness and section dimensions determine whether a tube specification is suitable for the intended component and its subsequent processing. These requirements should be confirmed before production.
Automotive-related application areas
Subject to the specified material, dimensions and technical requirements, ERW carbon steel tubes may be considered for:
- Suspension-related structures and components
- Shock absorber components
- Steering system structures
- Axle and shaft-related parts
- Vehicle support structures
- General automotive mechanical fabrication
Final suitability depends on the component design, material requirements, dimensional tolerances and applicable inspection criteria.
04. Customization & Processing Options
We can discuss the following product and order requirements when preparing a quotation.
| Customization Item | Options / Requirements |
|---|---|
| Tube profile | Round, square or rectangular |
| Steel grade | Available carbon steel grades according to product requirements |
| Dimensions | OD, wall thickness, side length, width and height, as applicable |
| Length | Random length or fixed length |
| Surface treatment | Black, hot-dip galvanized, electro-galvanized, anti-rust oil or protective coating |
| End processing | Plain end, beveled end, threaded end or grooved end |
| Packaging | Bundling, end protection, identification labels and export protection |
For non-standard dimensions, special processing or other requirements, provide the relevant drawing or technical specification for evaluation. Availability, production feasibility and minimum order quantity are confirmed according to the specific order.
05. Manufacturing & Quality Control
Product inspection should be based on the agreed steel grade, dimensions, applicable standard and purchase requirements. The following inspection items can be considered according to the product specification.
| Inspection Area | Relevant Checks |
|---|---|
| Raw material | Steel grade and chemical composition |
| Dimensional inspection | Outside diameter or section dimensions, wall thickness and length |
| Geometric condition | Ovality and straightness where specified |
| Weld quality | Weld condition and applicable non-destructive testing |
| Mechanical properties | Tensile properties and other specified mechanical tests |
| Additional testing | Flattening, bending and hydrostatic tests where applicable |
| Final inspection | Dimensions, surface condition, marking and packaging |
The inspection scope and acceptance criteria should be defined by the applicable standard and confirmed purchase specification. Material certificates and inspection records can be specified as part of the order documentation.
06. Manufacturing & Supply Support
Established in 2012 and based in Shanxi, China, we operate in the steel products sector, with a product portfolio that includes steel coils, steel plates, steel strips, H-beams, steel pipes, fittings, steel bars and steel wires.
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