Top Punching Service in Vietnam | Sheet Metal Punching Solutions

Introduction

Sheet Metal punching is a process of creating profiled holes in sheet or sheet metal. A typical punch and die set includes a punch of the desired shape for the hole and a suitable die to engage it. The punch is aligned with the die by an integrated guide or as part of the machine setup. The embryo is placed between the two. An impact or pressure on the punch then shears the material at the edges of the punch, pushing the material out of the workpiece and leaving a hole of a predetermined shape. It has the same industrial strength as a paper punch.

Nhat Nam provides excellent sheet metal punching services. Our CNC punching service features a wide selection of materials to meet customer requirements. We serve a broad range of industries and consumer products manufacturing/development sectors and more. Our team of experts can meet all of your sheet metal perforating requirements.

Capabilities

This process can be used to create holes in sheet metal or in metal parts and components, and the holes can be many shapes from traditional round or square to customized shapes and sizes.

Our machine (Pega 357) provides 33 tons of punching force and can process 50″ x 144″ sheets with a single repositioning cycle. The Pega’s mechanical ram ensures tighter tolerances, extended tool and machine life, superior edge quality and accuracy. It provides a maximum 350 hits per minute, with 200 hits on one-inch centers.

It is a high-volume manufacturer of short-run sheet metal parts. It enables efficient part manufacturing with minimal setup and maximum machine utilization. Its forming capabilities help to eliminate secondary operations. Its hydraulic clutch and brake system ensures consistent and stable punching over long production runs while also reducing noise.

Materials & Post-processing

Steel

CRS/HRPO
Galvanneal (GA)
Galvanized (GI)

Thicknesses available

0.025 in. - 0.787 in. (0.635 mm - 20.0 mm)

Stainless Steel

Thicknesses available

0.025 in. - 0.393 in. (0.635 mm - 10.0 mm)

Aluminum

1050
5052
6061

Thicknesses available

0.025 in. - 0.393 in. (0.635mm - 10.0mm)

Panel fastener: A panel fastener is a toolless device installed on the outside of the mounting part. It has a threaded stud on a spring that allows you to push and fasten into a threaded receptacle.

Flush nut: This nut is installed flush with your sheet metal and does not protrude on either side of your case. A great replacement for a threaded hole.

Floating nut: A floating nut allow looser tolerance on hole placement because if they are not perfectly aligned, the thread can float over to receive the fastener. Protrudes on one side of the sheet metal.

Blind nut: A blind nut encapsulates your threads, typically to prevent any foreign material from entering inside. Protrudes on one side of the sheet metal.

Standoff: A standoff is a fastener that is used to create space between two objects, usually to properly position them in a given space.

Right-angle fastener: Right angle fasteners provide strong right-angle attachment points in sheet metal parts and enclosures, especially in thin sheets of metal.

Pilot pin: A pilot pin is a simple unthreaded rod that can be used for such applications as locating components inside your enclosure.

Nylon insert nut: This type of nut contains a nylon inserted locking thread that increases friction with the screw to enable tighter locking. Protrudes on one side of the sheet metal.

Nut: Considered a standard self-clinching nut, this type of nut does not encapsulate your threads. Protrudes on one side of the sheet metal.

Miniature nut: This type of nut is used to place fasteners closer to the edge of a part. Protrudes on one side of the sheet metal.

Stud: A stud gives you a permanently threaded screw inside your enclosure that can be used for many different purposes, including mounting or grounding components.

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Insert

For custom enclosures or parts, self-clinching fasteners are probably the most useful hardware components at a designer’s disposal. They solve a whole host of challenges when it comes to mounting components, and because of their compact design and low profile, they provide excellent aesthetics as well. Themost popular are PEMS Fasteners.

If you require a fastener we don’t stock, contact us – we’d be happy to source what you need, for added lead time and cost.

Part Marking

Part marking is a great way to add high-contrast markings, part numbers, logos, and more. The table below compares the different types of marking methods we offer.

Marking Method	Common Uses	Pros	Cons
Silk Screen	Graphics Logos Text	Color Variety Crisp Detail Works on a variety of materials	More costly at lower quantities Susceptible to wear/fading over
Laser Marking and Engraving	Graphics/Text Part Numbers	Extremely durable markings Crisp Detail	Cannot produce colored markings
Bag and Tag	Serialization Part Numbers	Very low cost Can speed up inventory and receiving processes	Non-permanent solution

Finishes

Applying a finish to your sheet cut parts can not only improve their cosmetic appeal but also provide surface protection and increased performance. Below you will find some of the post-processing options and finishes we offer:

Adhesives and Coating

Black Oxide
Powder Coating
Hot-Dip Galvanizing
Wet Paint

Anodizing

Type II Anodize
Type III Hard coat
Type III w/ PTFE.

Metal Plating

Electroless Nickel
Zinc
Gold
Silver

Pretreatments

Passivation
Pickle and Oil
Bead/Sand Blasting
Electropolishing

Hole Creation & Application

Metal punching is the creation of shaped holes in metal sheets or plates using a punch and die set. It is a versatile and common method with various applications across nearly all industries. Here are some common uses of metal punching:

Hole Creation

Metal punching is most used to create holes of different sizes and shapes in metal plates or sheets. These openings may be used to facilitate assembly, ventilation, drainage or to allow the passage of cables, wires or conduits.

As a retainer for printed circuit boards

Card Guide

To produce multiple holes with minimal hits

Cluster

Allows screw head to reside flush or below the surface of the material

Countersink

Threading for screws and increased bearing area for tubes, etc.

Extrusion – Tapping

As a stiffener to add rigidity to sheet metal panels

Emboss – Beaded

Provides a recess or a protrusion

Emboss – Formed

Allows optional pathway for electrical cable

Knockout

To provide air flow or ventilation

Louver

Perforated Sheets

The process can be used to create perforated sheets with a pattern of regularly spaced holes. Perforations are used for decorative and functional purposes in architecture, interior design, filtration, acoustics, etc.

Perforated Aluminum Sheet

Perforated Steel Sheet

Perforated Stainless Steel Sheet

Application

Inernal Wall

Ceiling

Building Facade/Cladding

Patition Wall

Sunscreen

Security Fence

Landscape Design

Balustrade & Railing

FAQs

What are the advantages of sheet metal punching?

Sheet metal punching offers several advantages, including high precision, rapid production, and the ability to create intricate patterns and designs. It’s also cost-effective, making it a popular choice in the manufacturing industry.

What is the turnaround time for sheet metal punching services?

The turnaround time depends on the complexity and volume of the project. Small orders may have a quicker turnaround, while larger or more intricate projects may take longer. Contact us for specific lead times.

Is sheet metal punching cost-effective compared to other methods

Yes, sheet metal punching is often more cost-effective than alternative methods like laser cutting or waterjet cutting, especially for high-volume production runs. It offers a great balance of precision and affordability.

Can you assist with design and material selection for my sheet metal punching project?

Certainly! Our experienced team can provide design assistance and help you choose the right material for your project. We’re here to ensure your project’s success.

Common sheet metal materials

Gauge	Steel		Galvanized		Stainless		Aluminum
Gauge	in	mm	in	mm	in	mm	in	mm
3	0.2391	6.07
4	0.2242	5.69
5	0.2092	5.31
6	0.1943	4.94					0.1620	4.11
7	0.1793	4.55			0.1875	4.76	0.1443	3.67
8	0.1644	4.18	0.1681	4.27	0.1719	4.37	0.1285	3.26
9	0.1495	3.80	0.1532	3.89	0.1563	3.97	0.1144	2.91
10	0.1345	3.42	0.1382	3.51	0.1406	3.57	0.1019	2.59
11	0.1196	3.04	0.1233	3.13	0.1250	3.18	0.0907	2.30
12	0.1046	2.66	0.1084	2.75	0.1094	2.78	0.0808	2.05
13	0.0897	2.28	0.0934	2.37	0.0940	2.39	0.0720	1.83
14	0.0747	1.90	0.0785	1.99	0.0781	1.98	0.0641	1.63
15	0.0673	1.71	0.0710	1.80	0.0700	1.78	0.0570	1.45
16	0.0598	1.52	0.0635	1.61	0.0625	1.59	0.0508	1.29
17	0.0538	1.37	0.0575	1.46	0.0560	1.42	0.0450	1.14
18	0.0478	1.21	0.0516	1.31	0.0500	1.27	0.0403	1.02
19	0.0418	1.06	0.0456	1.16	0.0440	1.12	0.0360	0.91
20	0.0359	0.91	0.0396	1.01	0.0375	0.95	0.0320	0.81
21	0.0329	0.84	0.0366	0.93	0.0340	0.86	0.0280	0.71
22	0.0299	0.76	0.0336	0.85	0.0310	0.79	0.0250	0.64
23	0.0269	0.68	0.0306	0.78	0.0280	0.71	0.0230	0.58
24	0.0239	0.61	0.0276	0.70	0.0250	0.64	0.0200	0.51
25	0.0209	0.53	0.0247	0.63	0.0220	0.56	0.0180	0.46
26	0.0179	0.45	0.0217	0.55	0.0190	0.48	0.0170	0.43
28	0.0149	0.38	0.0187	0.47	0.0160	0.41	0.0126	0.32

Why Chose Us?

Expertise

Our dedicated experts work closely with you every step of the way to design, develop, and deliver the precision-crafted part and customized product.

Vetted Network

With ISO 9001 Certification and ANSI Certification, only the top shops that apply to become network suppliers make it through our qualification process.

Expert help

Our team of Application Engineers and Process Specialists are available to support you and provide answers to all of your fabrication and manufacturability questions.

Have any questions?
Call us today!

(+84) 964 09 20 79

Introduction

Capabilities