China Plastic Injection Molding

Plastic Injection Molding

case.engelen — Sun, 02 Jan 2022 02:14:00 +0000

What is Plastic Injection Molding?

It’s a manufacturing method used to make custom-molded parts, whether for consumer products or high-end B2B plastic products.

The plastic molding process involves injecting melted plastic into a mold; after the material cools off, the molded parts are removed from the mold and ready to use.

The illustration below shows the plastic injection molding process in a nutshell.

Plastic Molds Manufacturing Process

The injection molding machine is divided into 2 parts, the injection unit and the clamping unit.

You can use plastic injection molding to make large injection molded parts, including plastic molds.
You can use plastic injection molding to make large injection molded parts, including plastic molds.
You can mold anything from large storage containers, CPU cases, or bulletproof glass to smaller molded products such as smartwatch cases, plastic molds, food containers, or casing for medical devices.
The Injection molding process is the one that best suits mass manufacturing.
Plastic pellets are melted during the plastic molding process.
Designing the appropriate mold for your product is challenging; uniform mold walls are essential.
The cost of plastic injection molding varies significantly from project to project.

We’ve been perfecting our mass production process for the past 20 years, together with the use of the latest technology in plastic injection molding machines we’re able to offer custom molded parts fast and at a reasonable price.

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How does the Injection Molding Process work?

1. Plastic resins are melted by a heated barrel
2. The molten plastic resin is injected into the mold, where the plastic material solidifies into the desired shape
3. There’s a cooling time to ensure uniform cooling of the plastic molds and parts
4. Ejector pins push out the plastic parts and remove them from the mold

The parts are still left to cool down to further ensure the desired form and product quality. For example, a plastic mold could break if you try to handle it right after it’s been pushed out of the injection molding machine.

It’s best to let the resin/plastic rest.

The process of creating molded parts is quite simple:

Plastic pellets are poured into the injection unit of the molding machine.
Heating bands melt the raw material.
A screw pushes the molten plastic into the custom molds held by the clamping unit.

The mold is filled with this melted plastic, and it’s cooled off by cooling bores; once the mold temperature is cool enough, the final part is ejected with the help of an ejector plate and pins system.

The production process is repeated as many times as needed to get all the injection molding parts your device needs.

The process is measured in cycle times; which includes

Fill time
Packing time
Cooling time
Mold open time

Hundreds of parts can be manufactured in one day; it’s one of the most cost-effective industrial processes.

Simple right? Once you’re at this stage, it is, but to get here, you first need to go through the process of injection mold design and manufacturing; here’s where the real challenge is.

Designing The Mold for Plastic injection

The mold is a hollow custom shape block made out of steel that is filled with molten plastic materials that take the shape of the mold.

A couple of things to consider when designing the shape of your molded parts for plastic molding.

There are many more guidelines for designing injection molded parts.

That’s why you should never design molded parts, or any part of your product for that matter, in a vacuum because you will end up with a product that is not manufacturing friendly.

If you need complete design and manufacturing support, not just for your molds but also for your complete product, you can contact us.

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The Dangers of a Bad Mold Design for Plastic Injection Molding

Suppose you don’t use the correct mold parameters for the parts to be molded, considering dimensions and specific plastic materials to be used.

In that case, your parts have a higher chance of coming out defective after the plastic molding process.

Common plastic molded parts defects

Burn marks
Flash (Excess material on the parts, injection pressure plays a role here)
Flow mark patterns on the part
Sink marks
Splay marks
Molded part warping

These defects on the surface finish are pretty common when there’s very little coordination between the plastic injection molding company and the company doing the mold design and plastic part design.

This is usually referred to as a lack of Design for Manufacturing. If you want a smooth transition into mass manufacturing, the plastic mold company and your product designers should be experts on DFM.

Needless to say that defective parts caused by a lousy mold design are expensive to fix.

Fixing mistakes during the design stage is 100 times more important than fixing them during the manufacturing process.

Plastic Injection Molding and Its Cost

If this is your first time looking for molding manufacturing, you should know that production costs are high.

Plastic injection molds are complex units that require the knowledge of highly experienced engineers who know how to design a mold using advanced software and have in mind all the Guidelines for Injected Parts and the capabilities of the manufacturing plant.

Otherwise, the transition from design to manufacturing will be full of setbacks; surface finish issues will arise, and additional monetary expenses will follow.

US$7,000 – US$100,000

A very simple, single mold cavity can cost around US$7,000; a more complex multi-cavity tool mold will cost around US$100,000

These are very rough estimates; for an accurate quote, we need to look at the specifics of your injection molding project; but beware, even low-cost injection parts are not as cheap as you might expect.

The Advantages of Injection Molding

So, it sounds like this is expensive, and if something goes wrong, you’ll end up with a lot of wasted time and money.

So, why use this manufacturing process?

Plastic injection molding is still very much used to produce parts for mass manufacturing is fast. When done correctly, there are very few mistakes in the final parts, even if you’re using multiple materials for the same part.

Manufacturing plastic parts with other techniques such as 3D printing is not suited for mass production.

Producing parts this way takes too much time, and the machines don’t allow for the right plastics to be used; you end up using something which material properties turn out to be too weak.

With injection molding, you can mass manufacture long-lasting complex parts fast with a low waste of plastic and other materials.

Using an injection mold becomes the most cost-efficient way to produce product parts in the long run.

This is especially true when you have large product runs.

If you’ve ever reached out to a mold maker inquiring about manufacturing a small batch of custom-made molds and the plant ignored you, it’s most likely because the quantities you were trying to make were not worth it.

Thermoplastic Materials – Which is the right one for your product?

ABS – Acrylonitrile Butadiene Styrene

This is one of the most used materials for injection molding in high volumes; it is though, it offers stability and chemical resistance.

Polycarbonate

Another thermoplastic material that is commonly used as it is easy to work with, fire-resistant, unlike ABS, and very lightweight.

On the downside, it scratches easily, and polycarbonate sheets can expand by a degree of 0.065, so keep that in mind.

Polypropylene

This is a trendy material used for injection mold; it’s incredibly versatile and can be used in a wide array of product applications. If your product is in contact with water, we recommend you to use it as it is highly impermeable.

On the downside, it is affected by UV degradation easily, so if your product is under the sun all the time, then you might want to stay away from it.

Thermoplastic Rubber

If you need enhanced design flexibility, this is your best resin option. The benefit of using this material is stretching to a moderate length and then returning to its original shape.

The type of material you need to use for your molded parts product will largely depend on the kind of environment your device will operate in and the if any, certifications it needs.

To pass certification testing, 3D molded casings won’t cut it.

The Injection Molding Machine

After all the careful designing and manufacturing process for molds, it all culminates in the injection molding machine.

Plastics are poured down a hopper into the barrel; inside the barrel, there’s a screw-shaped device called an auger which rotates and pushes the melted plastics into the empty part of the mold.

The plastic inside the barrel is melted thanks to heater bands outside the barrel; it heats the barrel, and the plastic melts.

When the machine begins its production run, the mold closes, and the drill plunges forward with high pressure injecting the liquid plastic into the mold, just like a syringe injects liquid.

Injection Molding Services

Ask for a Quote

We have the complete equipment and offer various types of plastic injection services to accommodate your needs, from high-quality parts to lower-tier ones.

Tell us about your project, what you need, and we’ll work closely with you to deliver injection molds, plastic molds, automotive parts, and any molding manufacturing you need.

Don’t worry about your IP; we’ve got you covered; we’re part of the Titoma manufacturing group; you can use this Non-Disclosure Agreement before you get in touch with us.

Don’t worry. You’ll be the sole owner of your molds and any production equipment or machining for injection mold you decide to invest in.

If our skills suit your project requirements, we’ll get on a phone call to discuss more details for an excellent service. at affordable prices

We can optimize an already existing design or make one from scratch to save production time. The Titoma group also takes on complete electronics manufacturing projects.

Read on Co-injection Molding

Please contact us at the Titoma Group for more information, a quick quote, or other inquiries.

Durometer – 2 Minutes to Know What It Is and How to use it

case.engelen — Fri, 17 Sep 2021 04:32:56 +0000

What is a durometer?

The durometer is a measuring instrument dedicated to testing and measuring the hardness of different types of materials.

They’re able to perform hardness tests on

Metals
Plastics
Rubbers
Elastomer

The hardness of a material is defined as The resistance a material has to permanent penetration under some static or dynamic load.

How Does a Hardness Test Work?

The operation is based on exerting pressure on the surface of the material you’re running the hardness test on with the use of a penetrating element, the indenter.

Once the material for hardness testing has been selected, you must choose the indenter type.

There are three basic types.

A spherical steel ball for softer non-metallic materials, a conical one for the harder materials such as hard plastics, hard rubber, and harder elastomers, and a truncated cone shape one.

To measure the material’s hardness the durometer will exert force on the surface and once the force ceases the material will be left with a mark, then the depth of such mark (depth of an indentation) is measured to know the hardness of the material.

Factors that Influence a Durometer Hardness Measurement Result

How deep the surface indentation can be will depend on

The real hardness of the material of course
The viscoelasticity of the materials
The shape of the indenter
The duration of the force applied to the surface

Basic Requirements for Accurate Hardness Testing

Apply force in a consistent manner
Avoid shock waves
The material should be at least 0.25 inches thick
Thickness exception may apply for extremely hard materials
There must be sufficient material around the indenter, for softer materials a minimum of 6mm is recommended.

Learn about EVD DVT PVT Testing for Electronics

Parts of a Durometer

There are quite a few different types of durometers in the market and their shapes and parts might vary a bit making you feel a bit confused about what you need to focus on when looking to purchase one.

Well, don’t worry, this is what you have to pay attention to

Body: This is the part of the durometer that is in charge of generating the load that is exerted on the material. An accurate hardness measurement depends a lot on the well functioning of this part of the durometer. All loads have to be standardized.

Indenter: This is the part of the durometer in charge of making the indentation on the surface of the material.

Indicator screen: This will show the results of the test, the overall hardness measurements data

As its name says, it is responsible for indicating the hardness obtained during the measurement process. It will also instruct you on which type of indenter to use.

Types of Durometers

Different materials have different hardness levels and that’ why you might need a particular durometer to run a hardness test.

Shore Durometer

Its name comes from its inventor, Albert Shore.

Once the mark (indentation) is made on the material, the depth is transmitted to a spring in a dial gauge, which gives us the hardness value

Rockwell Durometer

This type of durometer is capable of measuring the hardness of any metal or alloy, both hard and soft. Its method of operation is to initially exert a small load, which increases the accuracy of the measurement and subsequently exerts a greater load.

Brinell Durometer

This durometer is used with a hard spherical indenter and uses constant load application, the diameter of the indentation is measured with a microscope and it is converted to a specific HB number using a formula.

Vickers Durometer

It focuses on observing the resistance of the material to the deformation. It’s considered a microhardness durometer. The resulting indentation is measured with a built-in microscope and transformed to HV or DPH hardness value using a formula.

These durometers incorporate a computerized image analyzer; it analyzes the location of the indentation, calculates the hardness values , and plots the information in a graph.

Knoop Durometer

This durometer is similar to a Vickers Durometer, the only difference is that a much smaller material sample is needed to run a material hardness test.

Leeb Durometer

This durometer leaves a smaller indentation than any of the other durometers in the list. Its operation is characterized by reading the energy loss that happens in an impact after hitting the material sample.

This means that this device generates an initial impact and after hitting the material, impact energy is lost and such loss is converted and measured in terms of hardness level.

Plastic Injection Molding

January 2, 2022 No Comments

What is Plastic Injection Molding? It’s a manufacturing method used to make custom-molded parts, whether for consumer products or high-end B2B plastic products.

Durometer – 2 Minutes to Know What It Is and How to use it

September 17, 2021 No Comments

What is a durometer? The durometer is a measuring instrument dedicated to testing and measuring the hardness of different types of materials. They’re

Form Tap Drill Chart

August 13, 2021 No Comments

Form Tap Drill Chart

Pipe Size Chart

August 4, 2021 No Comments

The Latest Pipe Size Chart Pipes are used in mechanical engineering across different industries. Pipes are hollow; this means they have an outer diameter and

Form Tap Drill Chart

case.engelen — Fri, 13 Aug 2021 08:01:52 +0000

HOW TO USE A FORM TAP DRILL CHART?

The best thing to do is find a tap drill clearance chart you can print, just like the one we offer in this article and print it for your lab so your team can easily access it. A drill size chart contains drill sizes and thread data that is so large that is almost impossible for a mechanical engineer to remember it all.

Download the Chart for FREE FORM TAP DRILL CHART

Tap Size		Cutting Taps			Forming Taps				CL Hole/Normal Fit		CL Hole/Close Fit		75% Thread for Aluminium, Brass, & Plastics		50% Thread for Steel, Stainless , & Iron
Inch	Metric	Drill Size	Dec. Eq./ Inches	CM	Drill Size	Dec. Eq/ Inches	CM	Closest Fractional	Inch	mm	Inch	mm	Drill Size	Dec. Eq.	Drill Size	Dec. Eq.
0-80		3/64	0.0469	0.1191	54	0.055	0.1397	3/64″	0.073	1.8542	0.067	1.7018	3/64	0.0469	55	0.052
	M1.6 X 0.35	1.25MM	0.0492	0.125	1.45MM	0.0571	0.145
	M1.8 X 0.35	1.45MM	0.0571	0.145	1.65MM	0.065	0.1651
1-64		53	0.0595	0.1511	51	0.067	0.1702		0.089	2.2606	0.081	2.0574	53	0.0595	2021-01-16 00:00:00	0.0625
1-72		53	0.0595	0.1511	51	0.067	0.1702	1/16″	0.089	2.2606	0.081	2.0574	53	0.0595	52	0.0635
	M2 X 0.40	1.60MM	0.063	0.16	1.80MM	0.0709	0.1801
2-56		50	0.07	0.1778	5/64	0.0781	0.1984		0.106	2.6924	0.094	2.3876	50	0.07	49	0.073
2-64		50	0.07	0.1778	47	0.0785	0.1994		0.106	2.6924	0.094	2.3876	50	0.07	48	0.076
	M2.2 X 0.45	1.75MM	0.0689	0.175	2.00MM	0.0787	0.1999
	M2.5 X 0.45	2.05MM	0.0807	0.205	2.30MM	0.0906	0.2301
3-48		47	0.0785	0.1994	43	0.089	0.2261	5/64″	0.12	3.048	0.106	2.6924	47	0.0785	44	0.086
3-56		46	0.081	0.2057	2.3	0.0905	0.2299		0.12	3.048	0.106	2.6924	45	0.082	43	0.089
4-40		43	0.089	0.2261	38	0.1015	0.2578	3/32″	0.136	3.4544	0.125	3.175	43	0.089	41	0.096
4-48		42	0.0935	0.2375	2.6	0.1024	0.2601	3/32″	0.136	3.4544	0.125	3.175	42	0.0935	40	0.098
	M3 X 0.50	2.50MM	0.0984	0.2499	7/64	0.1094	0.2779
5-40		38	0.1015	0.2578	33	0.113	0.287		0.154	3.9116	0.141	3.5814	38	0.1015	7/64	0.1094
5-44		37	0.104	0.2642	2.9	0.1142	0.2901		0.154	3.9116	0.141	3.5814	37	0.104	35	0.11
	M3 X 0.60	2.90MM	0.1142	0.2901	3.20MM	0.126	0.32
6-32		36	0.1065	0.2705	2021-01-08 00:00:00	0.125	0.3175	7/64″	0.17	4.318	0.154	3.9116	36	0.1065	32	0.116
6-40		33	0.113	0.287	3.25	0.128	0.3251		0.17	4.318	0.154	3.9116	33	0.113	31	0.12
	M4 X 0.70	3.30MM	0.1299	0.3299	3.70MM	0.1476	0.3749
8-32		29	0.136	0.3454	25	0.1495	0.3797		0.194	4.9276	0.18	4.572	29	0.136	27	0.144
8-36		29	0.136	0.3454	24	0.152	0.3861	9/64″	0.194	4.9276	0.18	4.572	29	0.136	26	0.147
	M4.5 X 0.75	3.70MM	0.1476	0.3749	4.10MM	0.1614	0.41
10-24		26	0.147	0.3734	11/64	0.1719	0.4366	5/32″	0.221	5.6134	0.206	5.2324	25	0.1495	20	0.161
10-32		21	0.159	0.4039	16	0.177	0.4496	5/32″	0.221	5.6134	0.206	5.2324	21	0.159	18	0.1695
	M5 X 0.75	4.20MM	0.1654	0.4201
12-24		16	0.177	0.4496	8	0.199	0.5055	11/64″					16	0.177	12	0.189
12-28		15	0.18	0.4572	7	0.201	0.5105	3/16″					14	0.182	10	0.1935
	M6 X 1.00	5.00MM	0.1969	0.5001	7/32	0.2188	0.5558
1/4-20		7	0.201	0.5105	1	0.228	0.5791	13/64″	0.281	7.1374	0.266	6.7564	7	0.201	7/32	0.2188
1/4-28		3	0.213	0.541	15/64	0.234	0.5944	7/32″	0.281	7.1374	0.266	6.7564	3	0.213	1	0.228
	M7 X 1.00	6.00MM	0.2362	0.5999	F	0.257	0.6528
5/16-18		F	0.257	0.6528	L	0.29	0.7366	17/64″	0.344	8.7376	0.328	8.3312	F	0.257	J	0.277
5/16-24		I	0.272	0.6909	M	0.295	0.7493		0.344	8.7376	0.328	8.3312	I	0.272	9/32	0.2812
	M8 X 1.25	6.70MM	0.2638	0.6701	7/40	0.2913	0.7399
	M8 X 1.0	7.00MM	0.2756	0.7	19/64	0.2969	0.7541
3/8-16		2021-05-16 00:00:00	0.3125	0.7938	S	0.348	0.8839	5/16″	0.406	10.3124	0.391	9.9314	2021-05-16 00:00:00	0.3125	Q	0.332
3/8-24		Q	0.332	0.8433	T	0.358	0.9093	21/64″	0.406	10.3124	0.391	9.9314	Q	0.332	S	0.348
	M10 X 1.50	8.50MM	0.3346	0.8499	U	0.368	0.9347
	M10 X 1.25	8.70MM	0.3425	0.87	9.4	0.3701	0.9401
7/16-14		U	0.368	0.9347	Y	0.404	1.0262	23/64″					U	0.368	25/64	0.3906
7/16-20		25/64	0.3906	0.9921	Z	0.413	1.049	25/64″					25/64	0.3906	13/32	0.4062
	M12 X 1.75	10.20MM	0.4016	1.0201	11.2	0.4409	1.1199
	M12 X 1.25	10.80MM	0.4252	1.08	11.5	0.4528	1.1501
1/2-13		27/64	0.4219	1.0716	15/32	0.4682	1.1892	27/64″	0.531	13.4874	0.516	13.1064	27/64	0.4219	29/64	0.4531
1/2-20		29/64	0.4531	1.1509	12.25	0.4823	1.225	29/64″	0.531	13.4874	0.516	13.1064	29/64	0.4531	15/32	0.4688
	M14 X 2.00	12.00MM	0.4224	1.0729	33/64	0.5156	1.3096
9/16-12		31/64	0.4844	1.2304	17/32	0.5312	1.3492	31/64″					31/64	0.4844	33/64	0.5156
9/16-18		33/64	0.5156	1.3096	13.5	0.5315	1.35	33/64″					33/64	0.5156	17/32	0.5312
5/8-11		17/32	0.5312	1.3492	14.75	0.5807	1.475	17/32″					17/32	0.5312	2021-09-16 00:00:00	0.5625
5/8-18		37/64	0.5781	1.4684	15.25	0.6004	1.525	37/64″					37/64	0.5781	19/32	0.5938
	M16 X 2.00	14.00MM	0.5512	1.4	19/32	0.5938	1.5083
	M16 X 1.50	14.50MM	0.5906	1.5001	15.25	0.6004	1.525
	M18 X 2.50	15.50MM	0.6102	1.5499	39/64	0.6094	1.5479
	M18 X 1.50	16.50MM	0.6496	1.65	17.25	0.6791	1.7249
3/4-10		21/32	0.6562	1.6667	45/64	0.7031	1.7859	21/32″					21/32	0.6562	2021-11-16 00:00:00	0.6875
3/4-16		2021-11-16 00:00:00	0.6875	1.7463	23/32	0.7188	1.8258	11/16″					2021-11-16 00:00:00	0.6875	45/64	0.7031
	M20 X 2.50	17.50MM	0.689	1.7501
	M20 X 1.50	18.50MM	0.7283	1.8499
	M22 X 2.50	19.50MM	0.7677	1.95
	M22 X 1.50	20.50MM	0.8071	2.05
7/8-9		49/64	0.7656	1.9446				49/64″					49/64	0.7656	51/64	0.7969
7/8-14		13/16	0.8125	2.0638				13/16″					13/16	0.8125	53/64	0.8281
	M24 X 3.00	21.00MM	0.8268	2.1001
	M24 X 2.00	22.00MM	0.8661	2.1999
1-8		2021-07-08 00:00:00	0.875	2.2225				7/8″					2021-07-08 00:00:00	0.875	59/64	0.9219
1-12		59/64	0.9219	2.3416				59/64″					15/16	0.9375	61/64	0.9531
	M27 X 3.00	24.00MM	0.9449	2.4
	M27 X 2.00	25.00MM	0.9843	2.5001
1-1/8-7		63/64	0.9844	2.5004				63/64″
1-1/8-12		1-3/64	1.0469	2.6591				1 3/64″
	M30 X 3.50	26.50MM	1.0433	2.65
	M30 X 2.00	28.00MM	1.1024	2.8001
1-1/4-7		1-7/64	1.1094	2.8179				1 7/64″
1-1/4-12		1-11/64	1.1719	2.9766				1 11/64″
	M33 X 3.50	29.50MM	1.1614	2.95
	M33 X 2.00	31.00MM	1.2205	3.1001
1-3/8-6		1-7/32	1.2188	3.0958				1 7/32″
1-3/8-12		1-19/64	1.2969	3.2941				1 19/64″
	M36 X 4.00	32.00MM	1.2598	3.1999
	M36 X 3.00	33.00MM	1.2992	3.3
1-1/2-6		1-11/32	1.3438	3.4133				1 11/32″
1-1/2-12		1-27/64	1.4219	3.6116				1 27/64″
	M39 X 4.00	35.00MM	1.378	3.5001
	M39 X 3.00	36.00MM	1.4173	3.5999

Pipe Size Chart

case.engelen — Wed, 04 Aug 2021 02:46:14 +0000

The Latest Pipe Size Chart

Pipes are used in mechanical engineering across different industries.
Pipes are hollow; this means they have an outer diameter and an inner diameter dimension.
The wall thickness of a pipe is used to determine whether a pipe s strong enough to withstand the pressure it’ll be put under.
The wall thickness of a pipe also serves to calculate the inner diameter of the pipe.
By subtracting the pipe wall thickness twice from the number that corresponds to the outer diameter you get the inner diameter; this is important as the inner diameter determines the flow velocity and rate.

PIPE SCHEDULES WALL THICKNESS (Inches)

Nominal	O.D. Inches	10s	10	40s & Std	40	80s & E.H.	80	160
1/8	0.405	0.049	0.049	0.068	0.068	0.095	0.095
1/4	0.54	0.065	0.065	0.088	0.088	0.119	0.119
3/8	0.675	0.065	0.065	0.091	0.091	0.126	0.126
1/2	0.84	0.083	0.083	0.109	0.109	0.147	0.147	0.187
3/4	1.05	0.083	0.083	0.113	0.113	0.154	0.154	0.218
1	1.315	0.109	0.109	0.133	0.133	0.179	0.179	0.25
1.25	1.66	0.109	0.109	0.14	0.14	0.191	0.191	0.25
1.5	1.9	0.109	0.109	0.145	0.145	0.2	0.2	0.281
2	2.375	0.109	0.109	0.154	0.154	0.218	0.218	0.343
2.5	2.875	0.12	0.12	0.203	0.203	0.276	0.276	0.375
3	3.5	0.12	0.12	0.216	0.216	0.3	0.3	0.437
3.5	4	0.12	0.12	0.226	0.226	0.318	0.318
4	4.5	0.12	0.12	0.237	0.237	0.337	0.337	0.531
4.5	5			0.247		0.355
5	5.563	0.134	0.134	0.258	0.258	0.375	0.375	0.625
6	6.625	0.134	0.134	0.28	0.28	0.432	0.432	0.718
7	7.625			0.301		0.5
8	8.625	0.148	0.148	0.322	0.322	0.5	0.5	0.906
9	9.625			0.342		0.5
10	10.75	0.165	0.165	0.365	0.365	0.5	0.593	1.125
11	11.75			0.375		0.5
12	12.75	0.18	0.18	0.375	0.406	0.5	0.687	1.312
14	14	0.188	0.25	0.375	0.437	0.5	0.75	1.406
16	16	0.188	0.25	0.375	0.5	0.5	0.843	1.593
18	18	0.188	0.25	0.375	0.562	0.5	0.937	1.781

Pipe Dimensions and Weight

- Wall Thickness in inches
- *Steel weight in lbs. per ft.

SIZE	INCHES	5S	5	10S	10	20	30	40s & STD	40	60	80S & E.H.	80	100	120	140	160	DBLE. E.H.

1/8	0.405		0.035	0.049	0.049			0.068	0.068		0.095	0.095
			*0.1383	*0.1863	*0.1863			*0.2447	*0.2447		0.3145	0.3145
1/4	0.54		0.049	0.065	0.065			0.088	0.088		0.119	0.119
			*0.257	*0.3297	*0.3297			*0.4248	*0.4248		0.5351	0.5351
3/8	0.675		0.049	0.065	0.065			0.091	0.091		0.126	0.126
			*0.3276	*0.4235	*0.4235			*0.5676	*0.5676		0.7338	0.7338
1/2	0.84	0.065	0.065	0.083	0.083			0.109	0.109		0.147	0.147				0.187	0.294
		*0.5383	*0.5383	*0.671	*0.671			*0.851	*0.851		1.088	1.088				1.304	1.714
3/4	1.05	0.065	0.065	0.083	0.083			0.113	0.113		0.154	0.154				0.218	0.308
		*0.6838	*0.6838	*0.8572	*0.8572			*1.131	*1.131		1.474	1.474				1.937	2.441
1	1.315	0.065	0.065	0.109	0.109			0.133	0.133		0.179	0.179				0.25	0.358
		*0.8678	*0.8678	*1.404	*1.404			*1.679	*1.679		2.172	2.172				2.844	3.659
1-1/4	1.66	0.065	0.065	0.109	0.109			0.14	0.14		0.191	0.191				0.25	0.382
		*1.107	*1.107	*1.806	*1.806			*2.273	*2.273		2.997	2.997				3.765	5.214
1-1/2	1.9	0.065	0.065	0.109	0.109			0.145	0.145		0.2	0.2				0.281	0.4
		*1.274	*1.274	*2.085	*2.085			*2.718	*2.718		3.631	3.631				4.859	6.408
2	2.375	0.065	0.065	0.109	0.109			0.154	0.154		0.218	0.218				0.343	0.436
		*1.604	*1.604	*2.638	*2.638			*3.653	*3.653		5.022	5.022				7.444	9.029
2-1/2	2.875	0.083	0.083	0.12	0.12			0.203	0.203		0.276	0.276				0.375	0.552
		*2.475	*2.475	*3.531	*3.531			*5.793	*5.793		7.661	7.661				10.01	13.7
3	3.5	0.083	0.083	0.12	0.12			0.216	0.216		0.3	0.3				0.437	0.6
		*3.029	*3.029	*4.332	*4.332			*7.576	*7.576		10.25	10.25				14.32	18.58
4-1/2	4	0.083	0.083	0.12	0.12			0.226	0.226		0.318	0.318					0.636
		*3.472	*3.472	*4.973	*4.973			*9.109	*9.109		12.51	12.51					22.85
4	4.5	0.083	0.083	0.12	0.12			0.237	0.237	0.281	0.337	0.337		0.437		0.531	0.674
		*3.915	*3.915	*5.613	*5.613			*10.79	*10.79	*12.66	14.98	14.98		19.01		22.51	27.54
4-1/2	5							0.247			0.355						0.71
								12.53			17.61						32.53
5	5.563	0.109	0.109	0.134	0.134			0.258	0.258		0.375	0.375		0.5		0.625	0.75
		*6.349	*6.349	*7.77	*7.77			*14.62	*14.62		20.78	20.78		27.04		32.96	38.55
6	6.625	0.109	0.109	0.134	0.134			0.28	0.28		0.432	0.432		0.562		0.718	0.864
		*7.585	*7.585	*9.29	*9.29			*18.97	*18.97		28.57	28.57		36.39		45.3	53.16
7	7.625							0.301			0.5						0.875
								23.57			38.05						63.08
8	8.625	0.109	0.109	0.148	0.148	0.25	0.277	0.322	0.322	0.406	0.5	0.5	0.593	0.718	0.812	0.906	0.885
				13.4	13.4	22.36	24.7	28.55	28.55	35.64	43.39	43.39	50.87	60.93	67.76	74.69	72.42
9	9.625							0.342			0.5
								33.9			48.72
10	10.75	0.134	0.134	0.165	0.165	0.25	0.307	0.365	0.365	0.5	0.5	0.593	0.718	0.843	1	1.125
		*15.19	*15.19	*18.65	*18.65	*28.04	*34.24	*40.48	*40.48	*54.74	54.74	64.33	76.93	89.2	104.1	115.7
11	11.75							0.375			0.5
								45.55			60.07
12	12.75	0.156	0.165	0.18	0.18	0.25	0.307	0.365	0.365	0.5	0.5	0.593	0.718	0.843	1	1.125
		*21.07	*22.18	*24.17	*24.17	*33.38	*34.24	*40.48	*40.48	*54.74	54.74	64.33	76.93	89.2	104.1	115.7
14	14	0.156		0.188	0.25	0.312	0.375	0.375	0.437	0.593	0.5	0.75	0.937	1.093	1.25	1.406
		*23.07		*27.73	*36.71	*45.38	*54.57	*54.57	*63.37	*84.91	72.09	106.1	130.7	150.7	170.2	189.1
16	16	0.165		0.188	0.25	0.312	0.375	0.375	0.5	0.656	0.5	0.843	1.031	1.218	1.427	1.593
		*27.9		*31.75	*42.05	*52.36	*62.58	*62.58	*82.77	*107.5	82.77	136.5	164.8	192.3	223.5	245.1
18	18	0.165		0.188	0.25	0.312	0.437	0.375	0.562	0.75	0.5	0.937	1.156	1.375	1.562	1.781
		*31.43		*35.76	*47.39	*59.03	*82.06	*70.59	*104.2	*138.2	93.45	170.8	208	244.1	274.2	308.5
20	20	0.188		0.218	0.25	0.375	0.5	0.375	0.593	0.812	0.5	1.031	1.28	1.5	1.75	1.968
		*39.78		*46.05	*52.73	*78.6	*104.1	*78.6	*122.9	*166.4	104.1	208.9	256.1	296.4	341.1	379
22	22	0.188		0.218	0.25	0.375	0.5	0.375		0.875	0.5	1.125	1.375	1.625	1.875	2.125
		*43.8		*50.71	*58.07	*86.61	*114.81	*86.61		*197.41	114.81	250.81	302.88	353.61	403	451.06
24	24	0.218		0.25	0.25	0.375	0.562	0.375	0.687	0.968	0.5	1.218	1.531	1.812	2.062	2.344
		*55.37		*63.41	*63.41	*94.62	*140.8	*94.62	*171.2	*238.1	125.5	296.4	367.4	429.4	483.1	542.13
26	26				0.312	0.5		0.375			0.5
					*85.6	*136.17		*102.63			136.17
28	28				0.312	0.5	0.625	0.375
					*92.26	*146.85	*182.73	*110.64
30	30	0.25		0.312	0.312	0.5	0.625	0.375			0.5
		*79.43		*98.93	*98.93	*157.53	*196.08	*118.65			157.53
32	32				0.312	0.5	0.625	0.375	0.688		0.5
					*105.59	*168.21	*209.43	*126.66	*230.08		168.21
34	34				0.312	0.5	0.625	0.375	0.688
					*112.25	*178.89	*222.78	*134.667	*244.77
36	36				0.312		0.625	0.375	0.75		0.5
					*118.92		*236.13	*142.68	*262.35		189.57

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China Plastic Injection Molding

Plastic Injection Molding

What is Plastic Injection Molding?

The illustration below shows the plastic injection molding process in a nutshell.

Plastic Molds Manufacturing Process

Table of Contents

How does the Injection Molding Process work?

Designing The Mold for Plastic injection

The Dangers of a Bad Mold Design for Plastic Injection Molding

Plastic Injection Molding and Its Cost

The Advantages of Injection Molding

Thermoplastic Materials – Which is the right one for your product?

ABS – Acrylonitrile Butadiene Styrene

Polycarbonate

Polypropylene

Thermoplastic Rubber

The Injection Molding Machine

Injection Molding Services

Durometer – 2 Minutes to Know What It Is and How to use it

What is a durometer?

How Does a Hardness Test Work?

Factors that Influence a Durometer Hardness Measurement Result

Basic Requirements for Accurate Hardness Testing

Parts of a Durometer

Types of Durometers

Shore Durometer

Rockwell Durometer

Brinell Durometer

Vickers Durometer

Knoop Durometer

Leeb Durometer

Form Tap Drill Chart

HOW TO USE A FORM TAP DRILL CHART?

Pipe Size Chart

The Latest Pipe Size Chart

PIPE SCHEDULES WALL THICKNESS (Inches)

Pipe Dimensions and Weight