Where Can I Buy SUS304 Magnetic Steel Pins in Bulk?

Buying SUS304 magnetic steel pins in bulk can be more complicated than it looks. Available sizes range from 0.2×3 mm to 1.0×10 mm and beyond, and choosing the wrong size or material can lead to poor finishing, rust or broken pins. Before comparing prices, check which pin size suits your workpieces and ask the supplier to confirm the material and specifications.

I am from Suzhou Guangu. We produce the magnetic pins by ourselves as well as the machines. We are a real manufacturer with our own R&D and production patent certificates. I will go into this magnetic-pin-buying question in depth today- we are the practitioners, so there is no need to beat around the bush.

Figure out which specs you need to purchase in the first place.

Don’t lead with “How much per kilo?” – see what parts you’re actually polishing first. The simple rule here is:

• Iron parts, stainless steel, heavy workpieces: the pins should be thicker, with a diameter of 0.5 or above and lengths of 8 mm or 10 mm.
• Parts with a large number of interior holes, corners or small blind holes: they must be thin – 0.2 and 0.3 are the ones that fit inside.
• Jewelry & small precision pieces: smaller is better; 0.2×3 is the most common.

These are the specifications we hold in stock – select as desired:

We will manufacture anything within this range. If you are not sure, just send us a sample and we’ll be happy to advise.

How to Verify Genuine SUS304 Magnetic Steel Pins

Metallic pins are all shiny; all that changes is the material. We use SUS304 stainless steel which won’t rust, has no impurities, won’t change its properties and won’t scuff the workpiece surface when polishing. There are thousands of cheap pins on the market – claiming to be magnetic, issuing the 304 flag, but actually ramming the numbers with inferior material – and then later, the truth appears: rust, brittle failure, broken pins thrown into the workpieces. That’s when you get a headache. As for wear: according to our own daily statistics, magnetic pins wear at around 4% per month. The pins that come with machines from other suppliers can run at 7% or 10%. Pins are a consumable, so taking a step less in wear makes a huge difference over a year.

A single shop for source and consumables, one place for everything you need.

When selecting SUS304 magnetic steel pins, do not judge the material by appearance alone. Ask the supplier for a material certificate and test a sample under your actual operating conditions. SUS304 is known for its corrosion resistance, but performance depends on the process and environment. You can review this 304 stainless steel datasheet and confirm that the pin dimensions and magnetic response suit your parts.

According to our own records, our magnetic pins wear at around 4% per month under our measured operating conditions. Actual wear varies with the workpiece, process settings and operating time. If you compare wear rates between suppliers, ask for the test method and conditions behind the figures.

Bulk Pricing for SUS304 Magnetic Steel Pins

For bulk orders, SUS304 magnetic steel pins are quoted by kilogram. The final unit price depends on pin diameter, length and order quantity. Ask the manufacturer for a written quotation by size and volume so you can compare suppliers on the same specifications. If you are also ordering a compatible machine and polishing liquid, ask whether combining the order changes the total price.

Reputation: peers bring peers

Many of our potential customers come to us through other customers. CNC, die casting and jewelry-industry customers – once a ‘working set’ is run without fuss and bother, they just don’t like to change. Consumables – peace of mind as you go, ‘never empty at the worst moment’ – it exceeds all your expectations. If you are comparing SUS304 magnetic steel pins in bulk, confirm three things before ordering: the size matches your parts, the material is documented, and the quote is based on the same specification. Send us sample parts and your expected usage, and Suzhou Guan’gu can recommend a suitable size and prepare a quotation. We will openly discuss specs, samples, quotes with Suzhou Guan’gu; if you’re still not sure, just send us a few parts to test, and we’ll guide you until you find the match.

Should you need any fine metal polishing, deburring or removal of scratches and oxide layers, please do not hesitate to contact us at any time – call our consultation hotline or leave us a private message for a personal quotation and technical advice: We offer the following services:

• You can have one-to-one talk with an engineer of the working condition of your workpiece, and get a recommended machine suitable for your requirement;
• Wide range of accessories in support of • Customised non-standard machines and complete set of consumables (magnetic pins and polishing liquid) are also available;
• Complete after sales support Operation training and long term technical support.

Contact Information:

• Email: zhihong@szguangu.com
• WhatsApp: +86 133 2800 8563
• Website: www.jsguangu.com
• Address: No. 333, Zixu Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province, China