- Model NO.: DIN7991
- Type: Countersunk Head
- Connection: Common Bolt
- Standard: DIN, GB, ANSI, JIS
- Certification: ISO,RoHS,SGS
- Available Material: Stainless Steel,Carbon Steel
- Trademark: JR
- Specification: M3-M24
- HS Code: 3917400000
- Material: Carbon Steel
- Groove: Hexagon
- Head Style: Counter Sunk Bolt
- Grade: 10.9
- Available Standard: DIN, ISO, JIS, ANSI, Bsw
- Size: 3-24mm
- Transport Package: Plastic Bag +Carton Box + Wood Pallet
- Origin: China
1. Certification: ISO, ROHS, SGSÂ
2. Available Standard: DIN, ANSI, ASTM, JIS, BSWÂ
3. Strength: Grade 4.8,Grade 8.8,Grade10.9,Grade12.9 A2-70, A4-70, A4-80Â
4. Finishing: Yellow, blue, white zinc plated, Galvanized,HDG,Chromate,Dacromet
5. Available material: Carbon steel, stainless steel SS304, A2 ,Stainless steel SS314,A4.
6. Size: M2-M100, Length: 5-300mm, Moq: 500pcs, Port: Shenzhen, ShanghaiÂ
7. Available Packing: Plastic bags+ChipboardÂ
Production name | Carbon Steel Black Galvanized Hex Socket CSK/Countersunk Head Screw |
Material | Carbon steel |
Color | Black |
Stander | DIN GB ISO JIS BA ANSI |
Grade | Gr4.8 Gr8.8 Gr9.9 Gr10.9 Gr12.9 |
Finished | Black Oxide |
Thread | coarse, fine |
Used | building industry machinery |
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally it is 7-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shippment or L/C.
If you have another question, pls feel free to contact us as below:
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If the land hardness is normal,and just use 200mm,300mm back reamer,the one-gun-distance is 150 meter and it's very easily.
If the land harness is normal,and the back reamer size reach 400mm,the one-gun-distance can be 150 meter but the operator need to pay high attention to the rig to see all the digital such as the rotation pressure and other.
If the back reamer size reach 500mm,600mm,the one-gun-distance can only be 90 meter.
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