Mushroom Head Square Neck Bolts (DIN603)
**Standard:** DIN603
**Head Type:** Flat, Ins Pan, Oval, Round, Binding, I.HD, Brazier, PF, HD, Button, Cheese, Fillister, ANSI Pan, Pan Washer, Indented Hex, Washer.
**Raw Material:**
- Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420
- Steel: C45 (K1045), C46 (K1046), C20
- Brass: C36000 (C26800), C37700 (HPb59), C38500 (HPb58)
- Bronze: C51000, C52100, C54400, etc.
**Surface Treatment:**
- TitaniZn-Plated, Ni-Plated, Passivated, Tin-Plated, Sandblast and Anodize, Chromate
- Polish, Electro Painting, Black Anodize, Plain, Chrome Plated, Hot Deep Galvanize (H.D.G.)
- Um: GR1, GR2, GR5, etc.
**Normal Diameter:** Customized according to customer requirements
**Heat Treatment:** Tempering, Hardening, Spheroidizing, Stress Relieving
**Manufacturing Process:** Heading / Washer Assembly / Threading / Secondary Machine / Heat Treatment / Plating / Anti-Slipping / Baking / QA / Packaging / Shipping
**Sample Availability:** We can produce samples within 7 days free of charge if we have existing tooling.
**Who is Shenzhen Bailian Hardware Co., Ltd.?**
Shenzhen BaiLian Hardware Co., Ltd. is a leading manufacturer combining the strengths of three physical companies. We offer high-quality products and premium service tailored to meet your needs. Our product range includes punching parts, high-strength hexagon bolts/nuts/cylinder head screws, titanium screws, high-precision bearings, anti-theft screws, CNC machining parts, bridge fastening components, agricultural machinery parts, wheel hub screws, wheel nuts, self-tapping screws, rail screws, and various precision castings.
**Why Choose Us?**
1. Quick updates on punching part products.
2. Competitive factory pricing with VIP service.
3. Response to inquiries within 10 hours.
4. 100% quality inspection by third parties.
**Free Samples:**
- Free samples available only for regular clients.
- New clients will not receive free samples.
- Shipping costs are borne by the client.
**Pre-Sale Service:**
1. MOQ: 500 PCS per model.
2. Sample testing is required before placing an order.
3. Bulk orders must strictly follow the sample.
**Shipping Options:**
- HK DHL, EMS, HK UPS, FedEx, China Post, or your preferred forwarder.
- Please provide correct delivery information.
**Payment Terms:**
1. T/T
2. L/C
3. WU
4. MoneyGram
**Contact Us:**
1. Feel free to reach out—we're here to help.
2. Online service hours: 9:00 AM to 6:00 PM (Beijing Time).
We are committed to providing you with reliable solutions and excellent customer support. Whether you're looking for standard or custom fasteners, our team is ready to assist you every step of the way. Let’s build a long-term partnership together!
Galvanized Steel Pipe
Galvanized Steel Pipe is a kind of Carbon Steel Pipe, mostly welded pipe, Galvanized steel pipes are divided into cold galvanized steel pipes (electro galvanized steel pipes) and hot-dip galvanized steel pipes. At present, hot-dip galvanized steel pipes are mainly used in fire protection, electric power and highways.
Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for water transmission, gas, oil and other general low-pressure fluids, they are also used as oil well pipes and oil transmission pipes in the petroleum industry, especially in offshore oil fields, as well as pipes for oil heaters, condensing coolers, coal distillation oil washing exchanges of chemical coking equipment, as well as trestle pipe piles, support frames of mine tunnels, etc.
Hot-dip galvanizing (HDG), as referenced is the process of dipping fabricated steel into a kettle or vat of molten zinc.
Hot-dip galvanizing (HDG) is the process of coating iron, steel or ferrous materials with a layer of zinc. This done by passing the metal through molten zinc at a temperature of 860°F (460°C) to form zinc carbonate (ZNC03). Zinc carbonate is a strong material that protects steel and can prevent corrosion in many circumstances. Hot-dip galvanizing can be carried out cheaply and in large batches.
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