| Standard: | Hex Head Self Tapping Screw DIN 7976 |
| Grade: | 4.8,8.8,10.9,12.9 |
| Size: | M4--M100 |
| Surface treament: | Black,zinc plated,zinc(yellow)plated,H.D.G etc,Dacroment |
| Material: | Carbon steel, SCM435, SS304/316, etc |
| Packing: | 25kgs per box,36 boxes per pallet,900kgs per pallet. |
| Sample: | Sample are free. |
Best competitive Advantages,
1.Strict quality control.
2.Very competitive price.
3.OEM Accepted.
4.The shortest delivery.
5.Best service.
6.According to drawing or samples.
7.Customer's Design and Logo are welcome.
| Ningbo yi pian hong fastener Co., Ltd is a professional fastener manufacturer and exporter of China fastener, also is one member of China Fastener Association. We are proficiently engaged in manufacturing various kinds of high strength bolts, nuts and thread rods with a yearly capacity of 30,000 tons and an annual turnover of 300 million Yuan. Our products include standards of ANSI/ASTM, DIN, BS, ISO, GB, JS, etc, which are mainly applied to the fields of high strength tight firmware and petroleum pipes' valve. Our products are mostly exported to Europe, North America, the Middle East and Southeast Asian countries and regions. We receive great acclaim from our clients at home and abroad because of the fine quality of our products and our good credit. |
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| Standard: | Hex Head Self Tapping Screw DIN 7976 |
| Grade: | 4.8,8.8,10.9,12.9 |
| Size: | M4--M100 |
| Surface treament: | Black,zinc plated,zinc(yellow)plated,H.D.G etc,Dacroment |
| Material: | Carbon steel, SCM435, SS304/316, etc |
| Packing: | 25kgs per box,36 boxes per pallet,900kgs per pallet. |
| Sample: | Sample are free. |
Best competitive Advantages,
1.Strict quality control.
2.Very competitive price.
3.OEM Accepted.
4.The shortest delivery.
5.Best service.
6.According to drawing or samples.
7.Customer's Design and Logo are welcome.
| Ningbo yi pian hong fastener Co., Ltd is a professional fastener manufacturer and exporter of China fastener, also is one member of China Fastener Association. We are proficiently engaged in manufacturing various kinds of high strength bolts, nuts and thread rods with a yearly capacity of 30,000 tons and an annual turnover of 300 million Yuan. Our products include standards of ANSI/ASTM, DIN, BS, ISO, GB, JS, etc, which are mainly applied to the fields of high strength tight firmware and petroleum pipes' valve. Our products are mostly exported to Europe, North America, the Middle East and Southeast Asian countries and regions. We receive great acclaim from our clients at home and abroad because of the fine quality of our products and our good credit. |
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Cold drawn steel bar is produced by Hot Rolled Steel Bar or wire rod to get smooth surface, more precision size, higher mechanical properties, which improves machining characteristics. It can also get various sections and sizes. So cold drawn steel bar is a better choice for machining users.
For high carbon steel or alloy steel bars, to avoid the cracks in inner or surface, the bars are usually required to be annealed before cold drawing.
To get different mechanical properties or hardness depending on final usage, the cold drawn bars will also be heat treated such as annealed, normalized or quenched and tempered(Q&T).
For CNC machines usage, to get much more precision sizes or much more better surface roughness for chrome plating, the cold drawn steel bars can also be centerless ground or polished.
We have more advantages on producing cold drawn steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of cold drawn steel bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdcolddrawnsteelbar.com