Straight shank twist drill,specially used in stainless steel processing

Straight shank twist drill,specially used in stainless steel processing System 1

Straight shank twist drill,specially used in stainless steel processing

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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: How many kinds of hardware are there in this industry?: Locks, handles, doors and windows, hardware, family decoration, hardware, plumbing hardwareArchitectural decoration, hardware, tools, kitchen hardware,Home appliances, mechanical parts, furniture hardware fittings

Q: Hardware stamping materials, know to tell me, the more species, the better, thank you ~!: the basis of national defense, hardware products are usually divided into two major categories of hardware and hardware. Big hardware includes steel plate, steel, flat iron, steel bar, universal channel iron, I-iron and various types of hardware, building hardware, tin, lock nails, wire, steel wire, steel wire cutting, home hardware, tools etc..

Q: What hardware fittings are needed for the glass curtain wall project?: After the installation of pre fill panel (if the embedded parts will be ignored), the use of chemical anchor bolt and expansion bolt, chemical anchor bolt of a set of agents, screw, flat pad, nut. The expansion bolt has a flat pad, an elastic pad and a nut.

Q: Do their own cabinets, cabinets hardware where can I buy?: Cabinet hanging yards, preferably hidden style. Handle should be rich, general building materials city is not rich enough, hinge, better. Foot, the kind of adjustable, engineering plastics can. Materials such as fire boards

Q: What do the hardware stores sell?: The hardware store, big and small, business scope: water iron, wire and cable, switch socket, hardware tools, electric tools, fan, ventilation equipment, decoration materials, mould parts, motor pumps, all you have to do big strong capital, weak capital can be minor.

Q: What does hardware include?: First of all, "hardware" concept, mainly refers to gold, silver, copper, iron, tin five metal materials collectively.Hardware is the mother of industry; the foundation of national defense and the products of hardware materials are usually divided into two major categories: big hardware and hardware.

Q: How to distinguish the advantages and disadvantages of bathroom hardware?: Raw materials: zinc alloy Liepin generally use inferior recycled materials as raw materials, and cut corners to reduce costs, loose structure, light weight, feel giddy. Superior products: general use fine cast pure copper, high-quality zinc alloy or titanium alloy as raw material, tight structure, heavy weight, feel thick. Raw material, YISHION and copper are preferred. The casting and finishing process: the shortage of small Liepin die casting machine and simple machine, pressure, product gross PI surface pores, cracks and surface defects of wire lines, inequality, polishing process rough, simple process. Superior products: the use of large precision computer control die-casting machine tools and digital precision machine tools, rough surface smooth, smooth, no pores, silk defects and other phenomena, grinding and throwing, when the process is rigorous, a wide range of processes. The plating: plating Liepin is thin and uneven, loose structure, poor adhesion, luster, the chrome plated directly in the blank, after a period of time, the surface is easily corroded, wear, blistering and peeling off. The coating thickness is less than 20 microns, the material is easy to be oxidized by air, and the coating surface has many scratches and burrs. Products: in strict accordance with the national standard electroplating technology, using imported raw copper, nickel, chromium and copper after, three plating process, depending on the sense of thick, shiny, long-term use will not wear, corrosion, foaming or peeling,. Compact structure, uniform coating, "" crisp, color surface coating thickness in general more than 30 microns, no scratch coating surface and burr. The accessories Liepin: fasteners made of steel screws, easy to rust, glass products made of low-grade products, uneven thickness, low transparency, visual sense of opacity. Excellent...

Q: I would like to ask the so-called jewelry hardware refers to which hardware, including what?: Hardware refers to jewelry necklaces, rings, bracelets, earrings, gold fifth different local customs in some places is not certain, anklets, in some places is cash, in some places is the mobile phone, notebook computer is in some places

Q: What kinds of hardware fittings can be divided into?: door lock (5) glass window lock electronic lock (6) (7) (8) chain lock anti-theft lock (9) lock the bathroom (10) (11) number lock padlock (12) the lock (13) lock core.