Black Oxide HSS Double End Drill Bit

Specifications 1. HSS material;

2. TUV certificate;

3. Black oxide double end;

4. sample test;

5.in stock available;

Product Name: Black Oxide HSS Double End Drill Bit   Product Description     

Type:	HSS double end drill bit
Shank:	double end
Product advantage:	nice cutting edge
Standard:	DIN 338
HSS Material:	HSS 6542/4341/4241
Production Technic:	Roll forged
Point Angle:	118° / 135° or split point
Surface finished:	Black Oxide

  Product Details   Can supply following specification:

HSS GRADE	HRC(Rockwell Hardness)
Mo2Cr4Vsi---4241	60-62
Mo3Cr4Vsi---4341	62-65
Mo3Cr4V---9341	63-66
Mo5Cr4V2---6542/M2	63-66
Mo5Cr4V2Co5---M35	64-67 HSS Co5%
Mo9Cr4VCo8---M42	66-68 HSS Co8%

  Can supply follwing production technics:   Suitable HSS Grade:

Production Technics	Suitable HSS Grade	Suitable Standard
Roll Forged	HSS6542/9341/4341/4241	DIN 345/ ANSI standard
Milled	HSSM35/6542/9341/4341/4241	DIN 345/DIN 340
Fully Ground	HSSM35/6542/9341/4341/4241	DIN 345/DIN 340

  Can supply following Surface Treatment:  Advantage of different surface treatment: Black Oxide---is an inexpensive black coating.A black oxide coating provides heat resistance and lubricity,as well as corrosion resistance.Coating increases the life of HSS bits.   Tianium Nitride(TIN)---is a very hard ceramic material that can be used to coat a high speed steel bit(usually a twist bit),extending the cutting life by three or more time.However, when the bit is sharpened the new edge,will not have the benefits of the coating.   Cobalt drill bits---are specially designed for drilling in hard steel,thick web helix delivers fast material removal combined with increased durability for maximum officiency and performance. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating,eliminating the need for a center punch. Different angle comparing picture Twist Drill Bits are available  in the widest choice of tooling material.However,even for industrial users,most holes are drilled with HSS bits.The geometry and sharpening of tht cutting edges is crucial to the performance of the bit.                                                                                                                                                         The most common twist drill bit(sold in general hardware stores)has a point angle of 118° or 135° and 135°split point,acceptable for use in wood,metal,plastic and most other materials.Also has more aggresive angle,such as 90 degrees,is suitable for very soft plastic and other materials; it would wear rapidly in hard materials.     Packaging & Shipping  A. Plastic pipe packing B. Metal displaybox packing C. Plastic tube packing D. Plastic displaybox packing E.  1pc / PVC bag,then 1pc / inner paper box F.  Grey metal displaybox packing G.  Metal box for drill bits set packing H.  Wooden box for drill set packing   Company Information        Jiangsu JINLEI Electrical Technology Co.,Ltd was founded in May. 2005, a private export-oriented  manufacturing enterprise  in Jiangsu Province. JINLEI Specializes in manufacturing all types of HSS TWIST DRILL BITS and related products.It is located in Houxiang Town of Danyang City with very convenient water,land and air transportation, close to CHANGZHOU airport. All of its’ geographical advantage and cultural environment make it a star enterprise in the city.      Through about ten years’ development, JINLEI has own experienced technical and management personel. All this rich experience makes it a famous manufacturer in High-Speed Steel tool line. JINLEI’s main products: HSS STRAIGHT SHANK TWIST DRILL BIT/ HSS TAPER SHANK DRILLS/ 1/2” S&D DRILLS/ MASONRY DRILLS/ WOOD WORKING DRILSS/ COMBINATION DRILLS and SAW BLADE etc. All these star products has win great business in the global tool market.           Our Services Question 1: Are you professional manufacturer or foreign trade company of hss twist drill bit line?   Answer:  JIANGSU JINLEI ELECTRICAL TECHNOLOGY CO.,LTD is a professional factory that main produce HSS twist drill bits. It was founded in 2005. After 10 years development, JINLEI  is a private export-oriented scale manufacturing enterprise in Jiangsu province. Follwoing took a few photos of our workshop production and warehouse.   Question 2:  What are your main products?   Answer:  JINLEI Specializes in manufacturing all types of HSS TWIST DRILL BITS and related products. HSS Taper Shank Twist Drill Bits/ HSS  Straight Shank Twist Drill Bits/ Reduced Shank Drill Bits/ 1/2 inch S&D Twist Drill Bits/ Step Drill Bits/ Double-end Drill Bits/ Masonary Drill Bits are our star products.   Question 3:  What material standard you using now?   Answer:  Now, JINLEI mainly use HSS standard of: HSS M35Co%, HSSM2(6542),HSS 9341, HSS4341,HSS black&decker, HSS4241.   Question 4: Do you have any supplier assessment certificate? Answer:  Jiangsu JINLEI Electrical Technology passed the certificate of TUV Rheinland.   Question 5:  Can you supply sample test and your samples are free?   Answer:  Yes, customers can tell us the specification of sample they need, then our factory can arrange to make your sample, and the sample will be prepared ok in 2 or 3 days. Our samples are not free, customers need pay sample cost and freight cost. And your sample cost will be return back to you if you place order in future.