**Product Specifications:**
- **Model No.:** DIN
- **Application:** Machinery, Chemical Industry, Environmental, Building
- **Finish:** Polishing
- **Trademark:** HNF
- **Transport Package:** Pallet
- **Specification:** Stainless Steel
- **Origin:** China
- **HS Code:** 7318150000
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**Carbon Steel Grade 4.8-12.9 BLACK Double Head Bolt, Stud Bolt**
[Image: Carbon Steel Grade 4.8-12.9 Black Double Head Bolt, Stud Bolt](http://i.bosscdn.com/uploads/c5/52/dd/b95719b0c9602a1a0da34fd720.jpg)
[Image: Carbon Steel Grade 4.8-12.9 Black Double Head Bolt, Stud Bolt](http://i.bosscdn.com/uploads/14/09/c8/cda2f4bce027f4512d699ab33b.jpg)
Jiaxing Haina is a professional manufacturer and supplier of fasteners with a wide range of products and complete specifications. Our major products include stainless steel bolts, high-strength bolts (Grade 4.8, 8.8, 10.9), hexagon bolts, carriage bolts, standard bolts, hexagon socket screws, self-tapping screws, self-drilling screws, hex nuts, threaded rods, anchor bolts, and more. We maintain a large stock of stainless steel products, including all DIN or GB standard stainless steel nuts.
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### **Specification Table:**
| Product Name | Carbon Steel Grade 4.8-12.9 BLACK Double Head Bolt, Stud Bolt |
|--------------|---------------------------------------------------------------|
| Other Type | Square U-Bolts / U Type Bolt / U Bolt |
| Standard | DIN 3570 |
| Material | Stainless Steel: SS201, SS304, SS316, SS316L, SS904L, A2, A4, Gr.B8, B8M |
| Finishing | Zinc (Yellow, White, Blue, Black), Hot Dip Galvanized (HDG), Black Oxide, Geomet, Dacromet, Nickel Plated, Zinc-Nickel Plated, Chrome Plated |
| Sample | Free |
| Stock Products | Stainless Steel: All DIN or GB Standard Stainless Steel Nut |
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### **Why Choose Us?**
1. Over 6 years of manufacturing experience
2. Wide variety of stock available
3. Competitive pricing
4. Strict quality control system
5. Advanced durability testing and technical design
6. Customized services tailored to your needs
7. Quick response within 24 working hours
8. Professional and experienced team
Whether you're looking for standard or custom fasteners, Jiaxing Haina is your reliable partner in the industry. Contact us today for more information or to place an order.
Counter Current Cooling Tower
Counter Current Cooling Tower has higher efficiency of the same volume, and offers larger water temperature difference. But it also comes with several disadvantages:
1.The unequal height between the air inlet and the water eliminator makes up the big Counter Current Cooling Tower and its high power consumption.
2.Meanwhile, the tower adopts nozzles to distribute water, which needs high pressure requirements and are easy to be blocked.
3.The entire tower body of the countercurrent tower is a closed structure, and it must be shut down when the equipment is overhauled or routinely maintained.
4.In addition, the rapid loss of water in the lower tank is very large, and it is easy to form water mist around the cooling tower, which is easy to cause the reproduction of legionary bacteria.
Counter Current Cooling Tower,Induced Draft Cooling Tower,Forced Draft Cooling Tower,Induced Draft Counterflow Cooling Tower
Guangdong Jiema Energy Saving Technology Co.,Ltd , https://www.jmheatexchanger.com