Shenzhen HSJ Metal Fabrication Co., Ltd.
Shenzhen HSJ Metal Fabrication Co., Ltd.

Sheet Metal Bending

Sheet metal bending is a forming process. In process of custom sheet metal bending, a metal sheet is passed through a pressure device and a special mold to transform a desired three-dimensional shape by applying bending stress. We are professional sheet metal bending company and we provide custom sheet metal bending services.

What is Sheet Metal Bending?

The process of Sheet Metal Bending involves transforming a flat sheet of metal into a V-shaped opening. To achieve this, the workpiece is positioned onto a concave die that has a V-shaped opening. Subsequently, a wedge-shaped tool (knife) applies pressure to the workpiece, pushing it into the V-shaped opening and bending the plate to the desired angle.

HSJ Sheet Metal Bending Process

The bending, or press brake forming or folding, is a forming process in which the plastic deformation happens over an axis. Bending does not normally change the thickness of the sheet metal.

Punches and dies press brakes are used to perform this process. A die can be a lower V- or U-shaped tool. The plate is pressed into the die to made a bending part. 

The CNC controls of our machines will precisely regulate the lowering depth and helps to maintain the minimum bending radius.


HSJ Custom Sheet Metal Bending Servies

HSJ offers professional Custom Sheet Metal Bending Services with seven different methods available:

  • V-bending - this method involves using a v-shaped die and punch to bend sheet metal to achieve acute, obtuse, or 90° bend angles.

  • Air Bending - leaves space (or air) underneath the sheet, allowing for more bend angle control than conventional v-bending, resulting in higher accuracy due to less springback.

  • Bottom bending - this method requires a higher tonnage press to achieve precise bend angle control.

  • Wipe Bending - involves holding the sheet metal against a wipe die via a pressure pad, and using a punch to force the edge of the sheet beyond the die and pressure pad, causing it to bend.

  • Roll Bending - uses sets of rollers to feed (and bend) the metal stock into rolls, tubes, cones, or curved shapes.

  • Rotary Draw Bending - the sheet metal is clamped to a rotating die and drawn around the die to form a geometry that matches the desired bend radius, with an internal supporting mandrel to prevent wrinkling on the surface and minimize the risk of scratches.

  • Customized Shape Bending - HSJ accepts custom one-piece molding requests for high-efficiency production.

Custom Sheet Metal Bending Tolerances

DescriptionGeneral Tolerance
Blank plate Size10’ x 20’ (3m * 6 m).Accept customized size
Standard Lead Time3-7days
Thickness rangeNormally 0.024'' - 0.250” ,also can do customzied thicker or thinner
General TolerancesFlat parts, +/- 0.010” on edge to edge, edge to hole, and hole to hole features; +/- 0.010” on bend to edge/hole features. For multi-planed bent parts, +/- 0.030” for hole to hole/edge, edge to edge, and over-formed parts; +/- 1 degree for bend angles.
Braking 10’ length, fingers from 3” - 6”

Custom Sheet Metal Bending Materials

Materials of sheet metal bending parts. Those bending metal plates include SGCC galvanized plate, SECC electrolytic plate, SUS stainless steel (model 201 304 316, etc.), SPCC iron plate, white copper, red copper, AL aluminum plate (model 5052 6061, etc.), SPTE, spring steel, manganese steel. 

aluminum plate
iron sheet
sus plate
zinc aluminized sheet

Advantages of Custom Sheet Metal Bending

Advantages of Custom Sheet Metal Bending

As a professional china sheet metal bending company, HSJ Metal Fabrication offers a wide range of sheet metal bending services. We can provide you with custom sheet metal bending prototypes or designs according to your specific projects and needs.                     

Advantages of Custom Sheet Metal Bending

Your product will be shaped accurately on time with minimal deformation and maximum consistency. Our years of custom sheet metal bending experience allows us the rare ability to carry out your demands for precision steel forming. 

Advantages of Custom Sheet Metal Bending

With our experienced workers, professional sheet metal bending service and multifunctional metal bending machine we can bend sheet metal panel from materials to custom-desired sheet metal bending parts in any shapes and radii you need.

How to Control Sheet Metal Bending Tolerances?

  • In the process of precision metal bending, tolerances are inevitable. Sheet metal bending tolerances within a certain range are allowed. 

  • Our sheet metal bending tolerances are less than 5.0 for sheets of ±0.1 and 5.0 or more for ±0.3.  And those over the range should be caused by improper operation. What we need to do is to control the sheet metal bending tolerances to the smallest possible range. 

  • Therefore, when cutting the material, it is necessary to ensure that the sheet metal bending tolerances of the plate shearer can be controlled. In addition, shear plates and CNC machining also play a significant role in sheet metal processing.

Choose HSJ For Custom Sheet Metal Bending

  • Competitive Pricing:

    Our quotations are based on market material prices, exchange rates, and labor costs, ensuring accuracy and fairness.

  • Quality Assurance:

    Since 2015, our team of 8 experienced engineers and 5 QC members, led by Mr. Li, our president and top leader, with 20 years of experience in famous workshops, has been dedicated to ensuring the highest quality standards. We are always available to offer advice and assistance.

  • Sample and Mass Production Lead Time:

    Sample lead time is 3-7 days, while mass production lead time varies based on order quantity:

    200-500: 7-15 days

    500-2000: 15-25 days

    2000-10000: 25-35 days

  • Specialization in Sheet Metal Fabrication and CNC Machining:

    We specialize in sheet metal fabrication and CNC machining, ensuring high quality and precision in our work.

  • Energetic Teamwork:

    Our team celebrates festivals, goes on team trips, and holds table meetings to stay energized, inspired, and motivated.

  • One-Stop Services:

    We offer one-stop services, including design confirmation, data evaluation, feedback, sample production, QC, mass production, project summaries, and more.

  • Quick Response and Professionalism:

    We respond quickly to inquiries and provide professional confirmation, submitting requests to our quotation team and offering prompt feedback.

  • Quality Control Teamwork:

    Our QC team ensures that all materials, processes, and labor are of the highest quality, inspecting products from start to finish.

  • Customized OEM and ODM Services:

    We offer customized experiences, including material selection, solution matching, surface treatment evaluation, logo design, packaging, and delivery methods.

  • Flexible Delivery Methods:

    We offer multiple delivery options, including express (3-5 days), air (5-7 days), train (25-35 days), and sea (35-45 days).

Custom Metal Bending Application

Computer enclosure
Computer enclosure

OEM Laser Cutting custom computer case sheet metal part,computer enclosure, computer host shell, computer chassis, accessories, cabinets, various of electronic precision metal bending parts. Material: Aluminum 5052, Carbon steel, Stainless steel, etc

Electronic power box
Electronic power box

Material: secc、spcc、sgcc

Surface treatments finish: Powder coating and deburred.

Process: sheet metal forming bending

Sheet metal bending tolerance: +/-0.1mm

Sheet Metal Bending Related FAQs

Sheet Metal Bending Related FAQs

  • What is the application of ours sheet metal bending parts?

    The common applications of sheet metal bending parts are in the panels, enclosures, cabinets, etc. of automobiles and airplanes.

  • How to select materials for precision metal bending?

    According to product functional, aesthetic and cost requirement, we choose the appropriate  precision metal bending materials. After selecting the materials, they should be verified and tested according to the product design requirements.

  • What is sheet metal bend allowance?

    Bend allowance is defined as the material required to add to the total length of the panel metal in order for it to get cut in the required size.

  • What metals can bend well?

    The higher a metal's degree of elasticity is, the greater bend allowance it has. One of the most elastic metals is nickel titanium. The next most elastic sheet metal panel bending metals include tin, magnesium, cadmium, and aluminum.

HSJ metal fabrication
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