A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Other uses are as a spacer, spring (belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers usually have an outer diameter (OD) about twice larger than their inner diameter

Baiyun Expansion Bolts Factory is a manufacturer of all standard DIN, ANSI and ISO fasteners and other industrial parts with well-equipped testing facilities and strong technical force.

With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in Mold, Electricity, Construction, Solar energy, Automotive, Machinery &Equipment and other industries.

Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.

We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!

Advantages/Features:

1.      Materials:

Our company has purchased steel from several large steel groups, such as Shougang Steel Mill, Handan Steel Mills whose steel have good mechanical properties and stability of chemical component, it keep the bolt to be of high strength.

2. Manufacture Procession

First, we have our own High-precision Digital Machining center for mould making in special Mould Workshop, excellent mould make product beautiful appearance and its size accurately.

The second, we adopt blasting procession, removing Oxidation surface, make the surface to be bright and clean and uniform and beautiful.

3. Quality Control:

The quality control is strictly performed from buying raw materials in warehouse to different machining procession and to final packing. We have Magnetic Powder Detector, Material Testing Machine, Metallographic Microscope, such testing instruments, guarantee product high quality and beautiful appearance.

4. Production Capacity

Single bolts, every month can produce 5000 Tons.

Frequently Asked Questions:

1. Q: Could you send me your catalogue and price list?

A: As we have more than thousands of products, it is really too hard to send all of catalogue and price list for you. Please inform us the style you interested, we can offer the pricelist for you reference.

2. Q: How about the quality of your products?

A: 100% inspection during production. Our products are certified to ISO9001:2008 international quality standards.

3.      Q: What material of the product can you supply?

A: Carbon Steel, Alloy Steel, Stainless Steel, Brass, Copper or according to your requirement.

4.      Q: What’s the delivery time:

A: Fro products in stock, we can ship it with in 7days after receiving your payment. For custom order, within 24 tons, production time is 20-35days after confirmed every details.

5.      Q: What’s your packing?

A: Our Normal packing is bulking in Cartons, 25kgs/carton, 36cartons/pallet. We also can pack products according to your requirement.

6.      Q: What about the warranty?

A: We are very confident in our products, and we pack them very well to make sure the goods in well protection.

To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don’t forget take the details pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.

7.  Q: Are you a manufacturer or trading company?
We are a professional FASTENER manufacturer with 20 years of experience.
In order to do business with our customers well, we established 1996 And now we have done in trading fields very well,
8.  Q: Do you offer free samples?
We can provide free samples and you should pay the freight. After you place an order, we will give back the freight. 
9.  Q: Do you accept our design on boxes? 
Yes. We accept custom design and we have a professional design team who can design products based on your requirements. 

Why choose us?

Once Stop Service - True one stop service supplier in the region serving customers’ stamping, forging, welding, and full service machining needs

Design - Design and improvement to meet your individual demands

Production - High precision production, high standard and strict requirements

Quality- ISO9001:2008 Quality system management

Products- More than 1200 products are available

Payment- Various options to make payment more convenient

Logistics- LCL to save on your freight cost

Customer Service- 24 hours standby, critical listening your every suggestion or demand and feedback ASAP