Home / Products / Fabricated Steel Components and Assemblies / Custom Fabricated Tubing – Steel / Stainless Steel, Bent & Welded, Customized Dimensions and Shapes
Custom Fabricated Tubing – Steel / Stainless Steel, Bent & Welded, Customized Dimensions and Shapes
  • Custom Fabricated Tubing – Steel / Stainless Steel, Bent & Welded, Customized Dimensions and Shapes
  • Custom Fabricated Tubing – Steel / Stainless Steel, Bent & Welded, Customized Dimensions and Shapes

Custom Fabricated Tubing – Steel / Stainless Steel, Bent & Welded, Customized Dimensions and Shapes

Our Custom Fabricated Tubing offers precision bent, welded, and shaped tubes tailored for your structural, industrial, and mechanical applications.

Inquiry Now

This includes:

·Carbon steel (ASTM A513 1020, ASTM A519 4140, EN 10305-2 E235)
·Stainless steel (AISI 304, AISI 316)
·Custom dimensions: OD, ID, wall thickness, and length
·Custom shapes: Round, square, rectangular, and complex profiles
·Welding and finishing: MIG/TIG, polished, coated, or galvanized
·Ideal for hydraulic systems, industrial machinery, automotive structures, construction frameworks, and other applications where standard tubing cannot meet design requirements.

 Typical Materials & Grades

Steel Grade

Features

Example Sizes / Applications

ASTM A513 1020

Carbon steel, yield ~350 N/mm², tensile ~420 N/mm²

Ø50.8 × 2 mm, round, automotive & structural

ASTM A519 4140

High-strength alloy, yield ~655 N/mm², tensile ~862 N/mm²

Ø76.2 × 3 mm, heavy-duty machinery

EN 10305-2 E235

Precision carbon steel, lightweight applications

50 × 50 × 2 mm, square

AISI 304 (EN 1.4301)

Stainless steel, corrosion-resistant

Ø50.8 × 2 mm, round, construction & industrial

AISI 316 (EN 1.4401)

Enhanced corrosion resistance for marine/chemical

60 × 40 × 2 mm, rectangular

These grades support applications in automotive, construction, industrial, and marine environments, following ASTM and EN standards.

 

Why Choose Our Custom Fabricated Tubing?

·Flexible Design: Bent and welded to precise round, square, or rectangular shapes
·High Strength: Carbon and alloy steel options for heavy-duty applications
·Corrosion Resistance: Stainless steel options for harsh environments
·Precision Tolerances: e.g., Ø50.8 mm OD ±0.1 mm, 2 mm WT ±10%
·Versatile Sizes & Shapes: Round, square, and rectangular profiles
·Cost-Effective Customization: High-quality fabrication at competitive costs

 Common Sizes and Shapes

Profile

Typical Sizes

Notes

Round

Ø12.7–101.6 mm

e.g., Ø50.8 × 2 mm for automotive frames

Square

20 × 20 mm to 100 × 100 mm

e.g., 50 × 50 × 2 mm for structural supports

Rectangular

40 × 60 mm to 100 × 60 mm

e.g., 60 × 40 × 2 mm for machinery frames

Wall Thickness

1–5 mm

Dependent on OD/ID and load requirements

Length

Up to 12 m

Custom-cut per customer specification


Manufacturing Process

1. Tube Selection: Cold-drawn or hot-rolled, based on steel grade
2. Forming: Shaping into round, square, rectangular, or custom profiles
3. Bending: CNC precision bending for exact angles and radii
4. Welding: MIG, TIG, or ERW welding for strong, seamless joints
5. Surface Finishing: Polished (Ra ≤0.8 µm for stainless, Ra ≤1.6 µm for carbon steel) or coated (oiled, galvanized)
6. Quality Testing: Dimensional checks, weld integrity, and non-destructive testing

Material Specifications

ASTM A513 1020 (Max %)

·C: 0.18–0.23 | Mn: 0.30–0.60 | P: 0.04 | S: 0.05
·Mechanical: Yield ~350 N/mm², Tensile ~420 N/mm², Elongation 15%
AISI 304 (Max %)

·C: 0.08 | Mn: 2.0 | P: 0.045 | S: 0.03 | Cr: 18–20 | Ni: 8–10.5
·Mechanical: Yield ~205 N/mm², Tensile 515–690 N/mm², Elongation 40%

Tolerances (per ASTM A513)

·OD (Round): ±0.1 mm (Ø12.7–76.2 mm), ±0.15 mm (>76.2–101.6 mm)
·Dimensions (Square/Rectangular): ±0.15 mm
·WT: ±10%
·Length: ±5 mm

 Delivery Conditions

·Cold-Drawn, Annealed, or Normalized
·Surface Conditions: Polished, oiled, or galvanized

 Applications

·Automotive: Bent exhaust systems, roll cages, chassis components
·Construction: Structural supports, railings, frameworks
·Industrial: Machinery frames, conveyor systems, custom fittings
·Marine / Chemical: Corrosion-resistant piping and fittings
·Lightweight / Precision Components: Components with minimal secondary use

 Pricing & Availability

·Estimated: $2–$6 per kg (depends on volume, region, bending complexity)
·Contact for custom quotes at [insert contact details]

 Quality Assurance

·Complies with ASTM A513, A519, EN 10305-2 standards
·Certified DIN EN 10204 3.1 for chemical composition, mechanical properties, and dimensional accuracy
·Non-destructive testing, weld inspection, and tensile testing included

 

 

  • Get A Quote
About Us
Jiangsu Suao Metal Product Co., Ltd.
Jiangsu Suao Metal Product Co., Ltd.
Suao is a professional manufacturer of high-precision cold drawn steel tubes, hydraulic tubes, and mechanical structure tubes, integrating R&D, production, inspection, and global sales. We operate two major production facilities covering over 36,000 square meters, with more than 200 employees and an annual output of 50,000+ tons, supplying customers across major industrial markets worldwide. Our integrated manufacturing capabilities include cold drawing, heat treatment, straightening, finishing, cutting, chamfering, and surface treatment. These are supported by a full range of advanced equipment for non-destructive testing, chemical analysis, and online dimensional monitoring—ensuring every tube meets stringent quality standards. We invest continuously in automation and smart manufacturing systems to enable flexible, high-mix, low-volume production. Our products are widely used in construction machinery, hydraulic systems, automotive parts, wind energy, shipbuilding, railways, and oil & gas sectors. Certified to ISO 9001, ISO 14001, CE, and RoHS standards, Hongli is more than a manufacturer—we are a trusted long-term partner for global industrial clients.
Certificate Of Honor
  • ISO9001
  • ISO14001
  • ISO14001
  • Patent Certificate
  • Patent Certificate
  • Patent Certificate
  • Patent Certificate
  • Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
News