Gold Member Since 2007
Audited Supplier
Hangzhou Hexun Industry Co., Ltd.

Drill Bit Set, Twist Drill Bit, Countersink Drill Bit manufacturer / supplier in China, offering Professional Grade 40cr Material SDS Plus Drill Bit Set, Hw-038 (1.5-38 mm) Manual Wire Stripper Machine, Used Double Core Flat Scrap Copper Wire Drawing /Stripping Machine (HW-KOB) and so on.

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Supplier Homepage Product Others Professional Grade 40cr Material SDS Plus Drill Bit Set

Professional Grade 40cr Material SDS Plus Drill Bit Set

FOB Price: Get Latest Price
Min. Order: 500 Pieces
Production Capacity: 1000000 Pieces
Transport Package: Plastic Plain with Plastic Bag with Carton Box
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: HX550
  • Length: Taper-length
  • Material: Tungsten Carbide
  • Trademark: HEXUN
  • Customized: Customized
  • Type: Twist Drill Bit
  • Usage: Wood Drilling
  • Origin: Zhejiang, China (Mainland)
Product Description

Professional Grade 40cr Material SDS Plus Drill Bit Set
Professional Grade 40cr Material SDS Plus Drill Bit Set
Professional Grade 40cr Material SDS Plus Drill Bit Set
Professional Grade 40cr Material SDS Plus Drill Bit SetProfessional Grade 40cr Material SDS Plus Drill Bit Set


1. Leesho offers a complete line of Metal Twist Drill Bits, such as straight shank, taper shank, etc;
2. Process: fully ground;



1. Drill diameter - The values indicated in the relevant dimensional standards apply in respect of the diameter of twist drills.

  • Test point: On the lands at the corners
  • Testing equipment: micrometer


             Test point of the drill diameter

2. Tapering of diameter - The diameter of twist drills usually reduces from the drill tip towards the shank in the area of the flutes.

  • Test values: The taper on diameter amounts to 0.02 to 0.08mm over a length of 100mm.
  • Test point: At the outside diameter on the land.
  • Testing equipment: micrometer and indicating measuring instruments.

3. Parallel shank - Tolerance for shank diameter f11, Tolerance for roundness and parallelism 0.02mm for the shank length.

4. Length - The tolerance of length for the total length corresponds for the degree of accuracy "very coarse" according to DIN standards. The flute lengths given in the relevant dimensional stands are minimum dimensions.

5. Point angle

  • Test value: σ=118°; σ=135°
  • Test point: At the cutting edges
  • Testing equipment: Universal bevel protractor indicating measuring instruments.

             Point angle

Materials and hardness

  • Materials - M2, M35, M42, 9341, 4341, 4241, etc
  • Hardness - HSS HRC63-66; HSSCo HRC64-68
  • Test point: On outside diameter on the land or adjacent relieved land.
  • Test equipment: Hardness Tester.


Twist drills with diameter 3mm and upwards shall be marked with:

  1. Diameter;
  2. Material: (HSS, HSSCo);
  3. Name or mark of manufacturer.
  4. Additional and/or differing marking by agreement.


Web Thinning

  • Without thinning
  1. Suitable for drill of general purpose.
  2. Thanks to thin web thickness, web thinning is not need.
  3. This without web thinning type is applied to design of drills for mild steel, alloy steels, cast iron, stainless steel, titanium, inconel, etc. and conventional cutting conditions.
  • Type C thinning (DIN1412 FORM C, SPLIT POINT)
  1. Because split point enables good centering when drilling and breaks the chips, chip removals is easy.
  2. Suitable for drill design in high hardened tough materials, i.e, heat treated steel, titanium alloy, stainless steel, incoroy inconel, nimonic, etc.
  • We can supply many kinds of drill bits, such as hss twist drill, masonry drill, wood working drill bit, etc
  • Not all products are currently listed on our website. If you don't see the specific product you are looking for, please contact us for assistance.
  • We supply goods with OEM services, customers' marking on packing is workable

About us
Hangzhou Hexun is specialized in wire stripper machine, cable granulator machine, cable making equipment, crusher machine, alligator shearing machine, metal shear baler machine and Plastic Baling Machine since 2003. 
Most of the machines have pass CE and GSG certifications.Quality control is our first life. Service for client is our main work.
After years hard working, Now our products are welcomed in USA, EU, South America, Middle East,South Eastern Asia, and South Asia etc. 

Quality control
1)Before the order can be confirmed finally,we would strictly check the material  ,accessories of the sample step by step
2)We salesman ,also as a order follower,would trace every phase of production from the beginning
3)We have a QC team ,every product would be checked by them before packed 
4)We would try our best to help clients solve  problems when they occurred
5)Most of our products have passed TUV CE /GS  ISO9001 certificate .

Payment terms
1)L/C at sight;
2)T/T:100% TT or 30% deposit by T/T,70% balance by T/T before shipment

Packing details
1)Suitable for container shipping
2)Packing method can be also changed according to the clients' special requirement


Q:What's the MOQ?

A:Normally MOQ would be 500pcs per item.Orders less than MOQ are still accepted if have stock.


Q:How long will it takes for delivery?

A:It will takes about 25 working days against deposit.Stock can be delivered within 7 days.


Q:What's the payment term?

A:Payment  will be through T/T, L/C, WEST UNION, ESCROW, ETC.Especially ESCROW, which is guaranteed by Made-in It is safe and effective.


Q:If we don't find what we want on your website,what should we do?

A:Email us the details of the products you want,We can also offer custom-made service for you.


Q:Is it possible to purchase one sample for quality testing?

A:Yes.we are glad to offer you a sample for your quality testing.

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Miss Claudia Yu
Sales Manager
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