Carbon Steel 18-8 CL8.8 SS 304 316 Solar Panel Fasteners
The material is generally divided into carbon steel and stainless steel, which are mostly used for the connection between thin metal plates and play the role of connection. When connecting, first make a threaded bottom hole for the connected part, and then screw the combined screw into the threaded bottom hole of the connected part. Due to the high hardness of the thread surface of the combination screw, the internal thread can be tapped out in the bottom hole of the thread of the connected part to form the connection.
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing
Hot forging
Cutting material ➨ hot forging ➨ turning ➨ tapping ➨ make heat treatment(if need) ➨ Finish ➨ Packing
Product Grade
A2-70 A2-80 A4-70 A4-80
Materials and Chemical compstition
| CHEMICAL COMPOSI(% ) |
| Type |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Cu |
| ≤ |
≤ |
≤ |
≤ |
≤ |
≥ |
≥ |
≥ |
≈ |
| 201Cu |
0.08 |
1.00 |
7.5-10 |
0.06 |
0.03 |
4.00-6.00 |
14.0-17.0 |
|
2.0-3.0 |
| 201 |
0.15 |
1.00 |
8.50 |
0.06 |
0.03 |
3.50-5.50 |
16.0-18.0 |
|
|
| 202 |
0.15 |
1.00 |
7.5-10 |
0.06 |
0.03 |
4.00-6.00 |
17.0-19.0 |
|
|
| 301 |
0.15 |
1.00 |
2.00 |
0.045 |
0.03 |
5.00-8.00 |
16.0-18.0 |
|
|
| 302 |
0.15 |
1.00 |
2.00 |
0.045 |
0.03 |
8.00-10.0 |
17.0-19.0 |
|
|
XM7
(302HQ) |
0.08 |
1.00 |
2.00 |
0.045 |
0.03 |
8.50-10.5 |
17.0-9.00 |
|
3.0-4.0 |
| 303 |
0.15 |
1.00 |
2.00 |
0.20 |
≥0.15 |
8.00-10.0 |
17.0-19.0 |
≤0.60 |
|
| 304 |
0.07 |
1.00 |
2.00 |
0.035 |
0.03 |
8.00-10.0 |
18.0-20.0 |
|
|
| 304HC |
0.08 |
1.00 |
2.00 |
0.045 |
0.03 |
8.00-10.0 |
17.0-19.0 |
|
1.0-3.0 |
| 304M |
0.08 |
1.00 |
2.00 |
0.045 |
0.03 |
8.50-10.0 |
18.0-20.0 |
|
|
| 316 |
0.08 |
1.00 |
2.00 |
0.045 |
0.03 |
10.0-14.0 |
16.0-18.0 |
2.0-3.0 |
|
316L
(12Ni) |
0.03 |
1.00 |
2.00 |
0.045 |
0.03 |
12.0-15.0 |
16.0-18.0 |
2.0-3.0 |
|
316L
(10Ni) |
0.03 |
1.00 |
2.00 |
0.045 |
0.03 |
10.0-14.0 |
16.0-18.0 |
2.0-3.0 |
|
| 321 |
0.08 |
1.00 |
2.00 |
0.045 |
0.03 |
9.00-13.0 |
17.0-19.0 |
|
Ti≤5*C% |
| 2520 |
0.08 |
1.00 |
2.00 |
0.035 |
0.03 |
19.0-22.0 |
24.0-26.0 |
|
|
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
6boxes/CTN,36CTNS/PALLET
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH
- QBH brand sales to the main quality assurance.
- Years of export trade management, excellent service, word-of-mouth guarantee.
- By working with TUV,escort for quality.
- Customization of non-standard parts can be made according to customer's requirements and drawings.
- For quality customers,we can provide a certain credit period.
The combination screw generally has two combination screws and three combination screws, that is, one screw is equipped with a spring washer and a flat washer. A screw that is then screwed together.
QBH company has more than 10 years of experience in the manufacture of composite screws, and is good at the production and manufacture of various composite screws. It has complete and strict testing process, environmental protection color zinc, environmental protection blue zinc, white zinc, color zinc, white nickel and other electroplating methods. It supports drawing customization and welcome to inquire.
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SS 304 Solar Panel Fasteners Images
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