Established in 2005,JESSIN ROCK DRILL CO.,LIMITED is a professional manufacturer of rock drilling tools. PRODUCTSYour present positionï¼?Home> PRODUCTS>DTH Bits DTH Bits (1) Made of premium quality nickel-alloy steel 23CrNi3MoA for increased durability and wear characteristics, and YK 05 tungsten carbide as same grade as internationally well-known T6 brand. (2) Apply "hot (thermal) -insertion" processing procedure to insert the buttons as same as internationally well-known brand, (3) Entire CNC processing procedure ensure the quality consistency and reliable. (4) Military grade requirements of heat-treatment guarantee durability, Specific heat treatment standards and special â??stress reliefâ?? processes ensure consistent performance. (5) Designed for maximum performance and hole cleaning ability and high penetration rate.Our bits are interchangeable with Atlas Copcoâ??s COP32 34 44 54 64 84, Ingersoll-Rand â??s DHD3.5,DHD3.5HD, DHD 340A , DHD350R, DHD 360, Mission60, DHD380 QL40, QL50 , QL60, QL80.SD10, NUMA100, NUMA120,ect. (6) Matching the insert to the job requirements is essential in achieving the desired results. Each of the following buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels. In general, the larger the number of gauge buttons the better overall performance, especially in hard rock. (7) Specification of dth hammer button bits:Diameter: (mm)1-2 inch low air pressure DTH bits Shank: BR1, BR2, DHD2.5 57/64/70/76/80/82/90mm (8) 3 inch high Air pressure DHT bits Shank: BR3,DHD3.5,COP34,COP32,QL30,M30,IR3.5 85 / 90 / 95 / 100 / 105/110mm (9) 4 inch high Air pressure DHT bits Shank:DHD340,COP44,M40,SD4,QL40 105 / 110 / 115 / 120 / 127/130mm (10) 5 inch high Air pressure DHT bits Shank:DHD350,COP54,M50,SD5,QL50 133 / 140 / 146 / 152 / 165mm (11) 6 inch high Air pressure DHT bits Shank:DHD360,M60,SD6,QL60,COP64 152 / 165 / 178 / 190 / 203mm (12) 8 inch high Air pressure DHT bits Shank:DHD380,COP84,M80,SD8,QL80 195 / 203 / 216 / 254 / 305mm (13) 10 inch high Air pressure DTH bits Shank:SD10, NUMA100 254/270/279/295/305mm (14) 12 inch high Air pressure DTH bits Shank:SD12,DHD1120,NUMA120,NUMA125 305/330/343/356/368/381mm (15) 15 inch high Air pressure DTH bits Shank: DHD1150, SD15,NUMA125 381/391/435/457/483/503mm (16) Over 20 inch high Air Pressure DTH bits Shank: NUMA180,NUMA240,483/508/560/578/610/660mm
Standered stainless steel safety doors fabrication detailes: 1.Stainless Steel Safety doors helps to improve Security with less routine maintenance and longer life compared with Wood, FRP, M.S / Galvanized steel Doors. 2.Stainless Steel Doors And Frame has life up to 75 yr.’s. 3.Three Side Safety Door Holding Framing Done with SS 304 “L “Channel. Three Sided Frame Firmly Fastened with Anhor Flash Fastener On Wooden Door Frame with SS 304 Stainless Steel CSK Allen Cap Bolt. 4.Safety Doors Outer Frames and Internal supports Fabricated with Rectangular Tube SS304 Non Magnetic Material. 5.Safety Door internal Panel being fabricated with 3MM Thickness with SS 304 Non Magnetic Material. 6.Mitered and Fully Welded “Seamless “Edges done from both side face of door Panel. 7.Safety Doors Frame Fully Welded With Finished Faces. 8.Safety Doors Prepared with door Silencer on each strike Door section. 9.Mounted Full Mortise Commercial Grade Lock Set And It’s Reinforcements Drilled, Tapped, And Welded with SS 304 Grade Material. For Added Security This Mortise Lock Set Has Four Stage Lock system With Hand Latch. All Cylinder Keys Set Can Not Be Duplicated. 10.Stainless Steel Dead Bolts Mounted For Internally Lock. 11.Each Safety Door Build Up with Small Window Door Opening which is not visible From out Side Since well Reinforced & Fabricated for Homogeneous Look. This window door can be utilized without opening full door for Courier, postage, small item receipts etc. purpose so that with safe intention your Small kid or Old family member can be safe from outsider routine dealers. 12.Each Safety Door Build Up with Concealed Stainless Steel Heavy Duty Bearing Hinges and its Reinforcements Drlled, Tapped, Welded With SS04 Allen Cap Screw, Nuts And Gauges Edge. 13.Safety Doors Bottom, Top And Middle Rectangular Tubes Reinforcement Fully Welded With Finished Frame Faces. 14.Stainless Steel Doors And Frame Water proof. 15.Stainless Steel Doors And Frame Bacteria Resistant. 16.Stainless Steel Doors And Frame Vermin Proof. 17.Stainless Steel Doors And Frame Fire Rated. 18.Steel Craft Engineers cut out the middlemen, Dealers, And Distributers Who mark up those prices to cover additional overheads and profits. Steel Craft Engineers only “sell direct” through professional team who are ready to explain the customization, product specification and tailor our manufacturing to your personalized design from initial concept to detailed drawings and after-delivery Sales Service. 19For after Sales service each Stainless Steel Doors Tagged With engraved with Laser Mark detail such as Our Phone Number, Web Site, Email ID, Address for Feature correspondences Etc. 20Stainless Steel Doors And Frame Door edges, tops and bottoms are fully and continuously TIG welded with stainless steel filament and Polished for a fully seamless and water-tight condition. 21.Pharmaceutical frames have a pencil-thin filet weld on all seams. There are no exposed seams anywhere. 22.Stainless Steel Doors And Frame All hardware/componentry is welded inside to eliminate any visible weld marks. ONE DOOR WT 70- 85 KG
It is based upon advanced technologies introduced from abroad and the successful experiences of leading manufacturers both domestic and abroad. It conforms entirely with up-to-date National Standard GB1094.1~2-1996¡ê¬GB1094.3-2003 GB1094.5-2003 and International Standard IEC76 commended by international electrical engin- eering committee, and are proud of the following outstanding features: 1. Low loss, and significantly energy-saving. The average no-load loss is 35% lower than prescribed by National Standard GB/T 6451-2008. 2. The core laminations are made up from high-quality cold-rolled grain-oriented silicon steel sheets with chamfered joints and without punched holes, and are stacked without the upper yoke sheets in place, so that they are effectively improved no-load upper together with lower frame. 3. Zigzag directed flow of oil are provided within the windings, so that all parts of the windings can be cooled more evenly. 4. The regulating winding is a separate winding which apart from the high voltage main winding. In this way, total ampere-turn balance between windings ; and the axial electrodynamic force during short circuit can be reduced, thus upgrading the short circuit withstand capability of the transformer as a whole. 5. The windings of one phase are assembled into an integral phase block before placing into the core. 6. The winding manufacture, winding assembly core and winding assembly work are all proceed in totally closed clean department. 7. Core frames in the form of a flat plate are used for clamping the core, and are joined together by side beams. The core and coil assembly is fixed in the tank, being positioned against the tank at six sides rigidly, so that there can be no displacement of the assembly due to impacts during transport. 8. Transformer tanks are fabricated with steel plates wide enough so that there are no weld joints on each surface. The steel plates for tank walls are pressed into corrugated shape to increase mechanical strength and to reduce noise due to vibration of the tank wall. 9. Diaphragm membrane is provided within the conservator, preventing direct contact of oil with air, protecting the oil from aging, thereby prolonging the service life of oil. Magnetic oil-level gauge reflects correctly the oil level in conservator. Flat plate-type radiator can effectively cool down the transformer. 10. Reliably sealed, and fine machined for sealed surface. Used double gasket grooves in their jointing surface and kept tight with high quality gasket material. If required by the customer, the upper and lower part of the tank can also be welded tight. 11. High quality paint is applied as surface finish of the tank and exposed steel parts, after shot-blasting and pretreatment, thus ensuring a durable life and glossy surface. 12. Quality assurance rules are also observed for all insulating parts, from raw material to final assembly. Strict regulations are observed for drying, wrapping and storage, preventing the absorption of moisture, swelling, and deformation. 13. Main components Because of good relationship and long-term co-corporation with all well-known sub-suppliers, we can meet the requirements of customers with whatever types of components they wish to have. fumigation wooden case
Failure phenomenon: batching station concrete trailer pump stone feed pneumatic door stones stuck not open. Analysis: batching station pneumatic door there is a big gap doors and small gap doors, big gap door its clearance greater than normal gravel particle size, so as to avoid the card material. Its small gap door gap is generally in the 5 ~ 10mm, 10mm below the stones card into the gap, it is difficult to pneumatic door jammed. Batching station after a period of use, the aggregate diesel engine concrete mixer spout wear, when the the gap wear to diesel concrete pump supplier 20 ~ 30mm, the card into the larger stones entering the gap in the process of the door, the gravel can easily stuck (wedge force) , pneumatic door can not be opened. Concrete mixing station troubleshooting method. twin shaft concrete mixer process: Check the pneumatic valve clearance and adjust to the appropriate value, can not be adjusted to the appropriate value as a result of excessive wear, you need to add welding steel plate or round bar in the feed opening, the gap reached a reasonable value. Take gray tank top, conveying powder to jar. Failure phenomenon: the bulk cement truck screw conveyer for sale the powder tank pump ashes, cement tank top with powder smoke. Analysis: conveying powder to powder cans transported by compressed air, compressed air, the powder to the powder cans into the air, such as dust removal machine cement mixing machine supplier filter clogging dust mobile concrete batching plant collector filter tank top, compressed air can not discharged generated "pressureout, and when the pressure reaches the safety valve opening pressure of the tank top, the safety valve opens, the diesel concrete pump for sale compressed air and powder through the safety valve is vented to the atmosphere, resulting in the risk ash phenomenon. Another level gauge failure, powder filled continue feeding also appears to take the gray tank top phenomenon. Process: 1, check movable concrete batching plants tank top dust filter and clean-up. 2, Once the take Ash phenomenon appears, you must clean up the safety valve around the powder, avoid powder caking the rain plug the safety valve. 3, as a result of the powder overfilled and take the gray, you must check on the level meter and a the material full alarm device reliability. Belt rainy slip. Fault slip phenomenon: a rainy day, inclined belt with load operation. Analysis: rainy, a moisture in the aggregate, and belt exposed parts easy to wet, damp, especially the inner ring and wet belt to screw conveyor reduce the coefficient of friction between the belt and the drive rollers, so that the drum is passed to the reduction in the belt torsional torch, the torque less than the belt material handling required torque, belt slipping.
ST-7601D Single Cable H/V Flaming Tester UL1581 Standards: According to the clause 1060 (vertical burning and FT1 test), 1061(cables burning test), 1080(VW-1 burning test), 1090(electric cable specimen horizontal burning test, optional item), 1100 (horizontal specimen/ FT2 burning test)of UL1581-2008, 6.8 standard arcing test, clause 9.19.5 of UL2556-2007, clause 4.26 of JIS C3005-2000,ASTM D 5025, ASTM D 5027 Scope: Apply to check the single cable flaming test for FT1, FT2/FH/Horizontal flame, FV-2/VW-1, FV-1/Vertical flame, and standard arcing test; Technical parameters: 1.Testing Chamber: L2200*D1300*H1650mm, capacity 4.0 m3 upper capacity of flame is more than 2.0m3, there is glass windows on the face, a pair of operational rubber gloves and smoke exhaust system on the top of the chamber; 2.Bunsen burner: Which according to ASTM D5025-2005 standard, Inside diameter of the burner tube is 9.5mm by length is 100mm, the Gas spout diameter is 0.9mm by thickness is 1.6mm. Which burn gas is methane at 98% minimum purity, the inner flame height is 402mm, the outer flame height is 12510mm, nominal rate is 500W with a flame ruler which can check the flame height whether it meet requirement at any time. 3.Temperature measurement system: According to ASTM D5207-2003 standard, including 10g temperature measurement copper pieces, Type K stainless steel thermal which diameter is 0.5mm,stopwatch and thermometer. 4.Specimen stands: Horizontal and vertical stands both independent, which made by Stainless steel. The vertical stand could do the vertical burning test & FT1 test, cables flaming test, VW-1 flaming test and horizontal specimen/FT2 flaming test. The horizontal stand only for electric cable horizontal specimen flaming test. 5.Gas: Methane which at 98% minimum purity, or nature gas which with a heat content of 37.1MJ/m3 or 8.9 kilo calories /m3. The cotton diameter is150~200mm & thickness is 6mm, which is to cover an area of testing surface W 305mm by D355mmon the vertical axis of the specimen, the cotton with a strip of unreinforced 60-lb or 98 g/ m2 Kraft paper which wide is 10mm and length is stick on the sample, then leave over 20mm from the specimen toward the rear of the draft-free chamber. 6.Flux system: Which consist of decompress valve, flow-meter which flux range is 1000ml/min, pressure gauge which pressure range is 200kPa, green oil which density is 1000kg/m3, and U shape pressure meter which range is 36¡±. 7.Timing system: Which consist of flaming timer, stop-burning timer and extending-fire timer etc. total 3 timer device. 8.Flaming counter: Accurately record the testing times. Polywood case
204pcs power drill bit set 51pcs hss titanium coated drill bits 5pcs each-3/64", 1/16", 5/64", 3/32", 1/8", 9/64" 6pcs each-7/64", 5/32 " 2pcs each-3/16", 1/4" 1pcs each-11/64", 7/32", 9/32", 19/64", 5/16" 42pcs hss black finished drill bits 4pcs each- 3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32" 1pcs each-3/16", 13/64", 7/32", 15/64", 1/4", 9/32", 19/64", 5/16", 11/32", 3/8" 11pcs masonry drill bits 1/8", 5/32", 11/64", 3/16", 7/32", 15/64", 1/4", 9/32", 5/16", 11/32", 3/8" 3 pcs long 12" masonry drill bits 5/16" 3/8" 15/32" 8 pcs wood-boring drill bits 5/32", 5/32", 3/16", 7/32", 1/4", 5/16", 11/32", 3/8" 6 pcs wood flat bits 3/8", 1/2", 5/8", 3/4", 1", 1-1/4". 4 pcs long 12" wood flat bits 5/16", 3/8", 1/2", 9/16" 3 pcs hex shank twist drill 5/64", 7/64", 5/32" 20pcs 50mm bits: "-" 1/8", 5/32", 13/64", 15/64", 9/32", 5/16", "+" ph1, ph2, ph3 "*" pz1, pz2, pz3 Star t10, t15, t20, t25, t27, t30, t40, t45 27pcs 25mm bits "-" 1/8", 5/32", 13/64", 15/64", 9/32", 5/16" "+" ph1, ph2, ph3 "*" pz1, pz2, pz3 Star t10, t15, t20, t25, t27, t30, t40, t45 Hexagon 1/8", 5/32", 13/64", 15/64 Square #1, #2, #3 1pcs drill gauge 10pcs nut driver 13/64", 7/32", 15/64", 9/32", 5/16", 23/64", 25/64", 7/16", 31/64", 33/64" 3pcs drill stoppers 1/8", 13/64", 5/16" 3pcs cupped nail sets 1pcs center punch 1pcs hex key 4pcs hole saw 1-1/4", 1-1/2", 1-3/4", 2-1/8" 1pcs hole saw adaptor 3pcs screw finders 1pcs magnetic holder
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