Good quality High efficiency ~ left hand drill bits & HF drill bit
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 100000 pc/month
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Specifications
1. Offers a complete line of Metal Twist Drill Bits, such as straight shank, taper shank, etc;
2. Process: fully ground;
Dimensions
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
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.
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.
Marking
Twist drills with diameter 3mm and upwards shall be marked with:
1.Diameter;
2.Material: (HSS, HSSCo);
3.Additional and/or differing marking by agreement.
- Q: What hardware fittings are needed for the glass curtain wall project?
- If it is a hidden frame curtain wall, so the glass will use glass block, glass block fixing method depending on the column and the beam form is generally M6 self tapping screws fixed and M6 stainless steel bolts, stainless steel bolt with a nut a bomb. If it is a plain frame curtain wall, there will be no such item.
- Q: What are the laws and regulations of hardware?
- Hardware laws and regulations: first, the national quality standards. This is the regulation. The hardware shall conform to the requirements of the regulations in accordance with the regulations. Safety standards, this must be strictly enforced legal norms. Is the hardware must ensure the safe and reliable use, safety accidents caused by quality factors cannot, if the quality safety accidents caused, the producer must undertake the corresponding administrative or criminal liability. The laws in this respect are mainly safety production law, quality law, consumer law, and so on. More general, but more formal. The hardware of national quality supervision and testing: China commissioned by the national certification and Accreditation Administration of the national metrology accreditation review group on building materials, through the certification supervision and expansion of the assessment of national building material industry hardware plumbing product quality supervision and testing center. Even Japan, building materials experts review group consults relevant information center, to the scene detection and testing equipment, test items on the part of a field test was carried out, the center of the authorized signatory on-site examination strictly, and the related staff of the theory exam, organize relevant personnel to the discussion. They believe that the test center has established a complete quality management system, organization system operates effectively, have the capability to undertake impartial third party inspection; the quality of personnel, equipment, environmental conditions and test reports have reached the requirements of standards of review.
- Q: Hotel room toilet stainless steel parts, how to maintain?
- The reason for this is the bathroom scale attached to the leading surface, when cleaning, can squeeze a small amount of toothpaste on the tap, and then use the toothbrush gently scrub, then rinse with water after use dry cloth to polish.Tap cleaning and Maintenance Notes: stainless steel faucet surface can not be cleaned with wire ball, because after the steel wire ball cleaning, stainless steel faucet surface will not be able to repair the scratches.
- Q: Is the hardware store profitable?
- Hardware means gold, silver, copper, iron, tin. Later, metal was used to refer to all metals. In fact, a lot of hardware, whatever is money, you look at the hardware electrical market inside the boss is very rich, and the price is basically opaque, so if you do have to make sure
- Q: I opened a small hardware factory, and I also have a few punch, want to do hardware accessories, and do not know what kind of good to do, good money, beg!
- What do you want to punch?. What does your machine do?. Punch can punch too many things.
- Q: Want to know the function and choice of cabinet hardware parts
- Cabinet hardware accessories are divided into functional and decorative hardware kitchen cabinets in two types, wet, smoky environment, selection of hardware fittings should be able to withstand the test, not easy to rust, corrosion, damage.
- Q: What do you have for construction hardware? What do you need to open a hardware store? Is the construction hardware mainly aimed at the construction site? Do we need hardware for real estate?
- You need electric wall switch, socket, circuit breaker, high and low voltage power distribution cabinet. Etc..
- Q: what is the Hardware classification?
- Cutting power tools @| hammer drill | | bench drill, drill | electric beveling machine | | chainsaw cutting machine | stone cutting machine | impact drill | electric scissors | | electric planer woodworking engraving machine engraving machine | | woodworking trimmer | other cutting power tools
- Q: Which part is responsible for leakage of hardware?
- If the warranty period has passed, the water should be public property maintenance, the loss is the property bear, you can see their property contract, if the property is not in this part of the cost of public use of water pipes, responsibility and use you, if you are using the water, after the warranty period, the responsibility of all is he.
- Q: What do you learn before you sell hardware?
- What do you learn before you sell hardware? market researchMarket research is the first step in opening a good hardware store. First of all, we can understand it better. Hardware stores are the kinds of hardware, decoration and some tools, household items such as common. Different areas have different conditions, analysis of the dominant demand and implicit demand of residents here, to compete with other business has much hardware store do not, that is to say, whether products or the mode of operation, do not blindly imitate others, to shop for their own way. At the same time, but also with other hardware stores to communicate well, convenient, when the supply is insufficient, you can exchange for a rainy day.
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Good quality High efficiency ~ left hand drill bits & HF drill bit
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 100000 pc/month
OKorder Service Pledge
OKorder Financial Service
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