Plenty of Large Glass Tubes to Choose From. Fast Shipping and Orders $35+ Ship Free. Great Prices on Large Glass Tubes. Shop Now and Save 1,281 large diameter borosilicate glass tube products are offered for sale by suppliers on Alibaba.com, of which glass accounts for 18%, quartz tubes accounts for 10%, and test tube accounts for 1%. A wide variety of large diameter borosilicate glass tube options are available to you, such as toughened glass, optical glass DEPEPE 25pcs 45ml Glass Test Tubes 25x140mm (0.98 x 5.51 inches) with Cork Stoppers for Science Lab, Party, Bath Salt and Candy Storage. 4.8 out of 5 stars. 621. $15.99. $15. . 99 ($0.64/Item) Get it as soon as Fri, Apr 30. FREE Shipping on orders over $25 shipped by Amazon
A large diameter glass tube was inserted into one of the remaining standard taper openings, and the closure sealed with aluminum foil. Kinetic study of the nucleophilic addition of diethyl phosphonate to benzylideneanilines. reaction flasks with large diameter neck tops were made by fusing a section of larger diameter glass tubing to the. The capabilities of large glass tubing. The applications for large-diameter tubes are vast, stretching across various industries and numerous uses. The large tubes are made of DURAN borosilicate glass, which ensures visual quality, high chemical resistance, and low thermal expansion throughout a wide range of applications. For that reason.
Pyrex Glass Tubes, Pyrex Cylinders. Greatglas provides Pyrex Glass Tubes and cylinders of various sizes and with numerous features. We carry over 150 combinations of outer dimension (OD)and wall thicknesses of borosilicate glass tubing ranging from 1/4 OD to 18.00 OD.. We can deliver Pyrex tubes of ANY size and precisely to your specification. Minimum order: $75 PYREX® Standard Wall Glass Tubing. Made of a low expansion borosilicate composition with high chemical resistance Meets all U.S. pharmacopoeia specifications for Type 1A glass 4 to 32mm O.D. sizes are 1219mm long ± approximately 6mm. 4mm O.D. have ends cut, while 5 to 32mm sizes have ends fire polished. 35 to 178mm Plexiglass Acrylic Tubing. Cast Acrylic Tubing 1.50 OD up to 24 OD in stock - 72 long is the maximum length (then we have to bond 2 pc together and is available to order). We show wall thickness of .125, and .250. The factory stocks or makes alternate wall thicknesses of .187, .375 and .500 in a variety of diameters
large diameter borosilicate glass tube 52 Results; Price - OK. Ship From. In stock. Sort by Popular Newest Most Reviews Price. US$9.99 US$11.99 17% Off 10Pcs 200x7x1mm Length 200mm OD 7mm 1mm Thick Wall Borosilicate Glass Blowing Tube Lab Factory School Home Tubes 4 reviews COD We carry all major brands of tubing including, Duran®, KG-33®, Pyrex®, ,Simax®, Quartz, Soda Lime and GE Lead Glass. Our size ranges from small diameters of 3mm outer diameter (OD) tubing to large diameter outer diameter (OD) tubing of 325mm with wall weights up to 9mm. With lengths from .5 to 58 we can master most applications This glass test tube comes with a large diameter of 1.25 or 32m which is convenient for easy filling of powders and liquids, Need something larger still? We also offer a 1.5/38mm diameter tube . This large tube is made from heat resistant borosilicate glass with a heavy duty rim for stoppering; use for spices or beverages 2,503 large diameter quartz glass tube products are offered for sale by suppliers on Alibaba.com, of which quartz tubes accounts for 40%, glass accounts for 4%, and test tube accounts for 1%. A wide variety of large diameter quartz glass tube options are available to you, such as bending, welding, and cutting
The clarity of a cast plexiglass tube mimics that of glass since it is cast in a mold, then polished inside and out. Cast tubing is significantly stronger and more chemical resistant than extruded tubing and recommended for all lab applications and whenever fabricating the material. Plexiglass cast acrylic tube is sold and priced by the foot
Fiberglass Tubing. Longer lengths, thicker walls and lower costs! RF transparent and non-conductive when requested Adding new fiberglass tubes regularly. Fiberglass tubing is often used when weight isn't the main concern. Fiberglass has additional design features like RF transparency and by itself it isn't conductive like carbon fiber Glass tubing comes in various sizes ranging from 3mm in diameter up to 465mm. We can cut down to any length that you require up to 1500mm long. The type of tubing that we supply and use is borosilicate glass (heat resistant) We can polish the edges and drill holes, or manipulate by flame and produce bespoke items to your specific requirements Large Diameter Glass Cylinder Tube Manufacturers, Factory, Suppliers From China, We sincerely hope to provide you and your company with a great start. If there is anything we will do to suit your needs, we shall be additional than pleased to do so. Welcome to our manufacturing facility for stop by -Easily cut large diameter glass tubes (over 30mm)-Cutter scores the inside of tube-Hash mark every 6 inches for easy reference and quick cuts-Replaceable hardened steel wheel for long life-All steel construction-18 model for cutting glass tubes up to 1 foot long-36 model for cutting glass tubes up to 2.5 feet lon The 6 - inch - diameter glass tube was turned upside down so that a radial surveycould be made at p0int.sbelox theant,enna. Effluent monitoring associated with fluidized-bed waste calciner facility operations. e 3/4-inch diameter by 6 - inch long glass tube . The standardization of cod liver oil.
. Glass rod is solid lengths of glass in round or other shaped forms. It has architectural applications, and is useful as a raw material with the ability to be heated and pressed into a variety of shapes. It is made from heat resistant borosilicate glass and is available as standard in diameter up to 30mm and lengths up to 1500mm Description of Large Diameter Borosilicate Pyrex Glass Tube Borosilicate glass is one of transparent colorless glass,through wavelength is between 300 nm to 2500 nm,transmissivity is more than 90%. Coefficient of expansion is 3.3. It can a
Round Fiberglass Tubing. Liberty Pultrusions manufactures hollow round tubing in a range of outside and inside diameters. Our production capabilities include small sizes from ½ inch diameter to 14 inches in diameter. All of the standard tubing sizes are available including ¾, 1, 1.125, 1.144, 1.25, 1.50, 1.75, 2 and 3. Large diameter quartz glass tube. 1.Large diameter quartz glass tube: 2.Purity 99.99% min. 3.Resistance 1100 degree, 1000 long time work. 4.Low OH. 5.Nice Appearances . Advantage of the large diameter quartz glass tube: 1.High temperature resistant, 1100 degree. 2.Corrosion-resistant. 3.Good thermal stability. 4.Good transparency for ligh Shop the largest selection of borosilicate clear tubing and rod from top brands like Simax, Pyrex and Schott. Same Day Shipping Worldwide . Find Great Deals Now! Buy Top Products On eBay. Money Back Guarantee The extra-large 20x150mm borosilicate glass test tubes are 150 mm tall x 20 mm with 17 mm inside diameter and approximately 28 ml volume. Use with No. 1 rubber stoppers. These glass test tubes are made of borosilicate glass that's similar to Pyrex or Kimax, and they have clear marking spots for your lab labeling needs
large diameter quartz glass tube. 1,clear quartz tube: 2 purity 99.99% min. 3,Resistance 1100 degree, 1000 long time work. 4,Low OH. 5, Nice Appearances. Advantage of the quartz tube: 1. High temperature resistant, 1100 degree. 2. Corrosion-resistant. 3. Good thermal stability. 4. Good transparency for light. 5. Good electrical insulation. Glass Tubing and Glass Rod. Borosilicate Glass Standard Tubing. Borosilicate glass tubing is available in over 100 sizes. These sizes range from 4mm in diameter and 0.8mm thick, to 325mm in diameter and 9.0mm thick and any size in between. Standards ISO 3585, ASTM E438, EN ISO 9001:2000 Clear extruded acrylic tubes come in diameters that range from .250″ to 8.00″ in outside diameter. All tubes are clear and highly polished. Our cast acrylic tube comes in diameters ranging from 1.250″ to 27.625″ in outside diameter. The standard wall thickness are .125, .187, .250, .375, and .500 inches
.118 inside diameter up to large 49.2 inside diameter). Regularly produce large and small quantity orders. Franklin maintains a full line of CNC lathes and turning centers to produce high quality fabricated parts from glass epoxy tubing. Common component parts are adapter tubes, anti-static bolt sleeves. Our Test Tubes and Culture Tubes are manufactured from tubing that has uniform wall thickness and exacting diameters. Rims are fire polished and smooth; tube bottoms are perfectly formed. Whether plain top, screw-capped, glass stoppered or flared rim, these Test Tubes will always perform in your lab. Starting at $264.40. Starting at $199.78 Lots of Large Diameter Seamless. No one in North America stocks more large diameter seamless mechanical tubing and steel pipe than Specialty. We stock more than 20,000 tons of seamless mechanical tubing and steel pipe on site to ensure that if you're looking for large diameter, Specialty Pipe & Tube is the one-stop source
s4. draw down a large glass tube to a smaller diameter. m5. blow a sphere from a large glass tube. d6. make a smooth taper on a large glass tube. s7. make a flare in a small glass tube. (flare = diameter of tube) m8. make a deep flare in a small glass tube. (flare 3x diameter of tube) s9. blow a hole in a large glass tube. m10. make a hole in a. Pegasus Glass | Glass Tubes, Glass Rods, Glass Media Bottles | Custom Glasswork. T: 800.315.0387 (519.620.7991) F: 877.793.3335 (519.620.7992) E: firstname.lastname@example.org. Pegasus Glass is North America's leading specialty glass provider. Both in distribution and manufacturing, for specialty glass needs in the form of glass tubing and glass rod Buy just one tube or save 50% by the case. Heat resistant & thick walled for science, crafts, product display & more with optional tube/stopper combos. We don't sell thin walled, easy to break, cheap test tubes! Test Tube Sizes Small. 13x100mm (1/2x4) are our smallest tubes; 18x150mm (3/4 x 6), the standard chemistry lab test tube See our products brochure for more information on the standard product range of DURAN ® glass tubes, rods, capilliaries and other glassware. Products with special dimensions such as 0.3 mm glass cuttings or 10 m tubes have already been successfully manufactured. SCHOTT is the only global company to have manufactured customized borosilicate glass 3.3 tubes with a maximum outer diameter of 46. Read About our Hurricane Glass Cylinder Candle Holders and Open-Ended Hurricanes. We've got a ton of informative blogs on various topics (home decor, vases, candle holders, terrariums, and gardening). To read up on other stories that feature or mention Hanging Glass Vases of every kind, you can check out our blog posts about using specific Hurricane Glass Cylinder Tubes and Glass Open-Ended.
. For over 20 years we have been supplying large diameter and long length tubes up to 11.25m (37 ft) in one piece (206mm/8.11 in ID). We can also fit joining sleeves to increase the length and span of the tubing application What Are Acrylic Extruded Tubes? More impact resistant than and half the weight of glass, extruded acrylic tubes are a strong, economical replacement option for glass. It also offers greater flexibility and shatter resistance compared to glass, making acrylic a better choice where safety is a concern
The air passes through a large-diameter glass tube, then through a small-diameter tube, and finally through a large-diameter tube again. Suppose the diameters of the two sizes of tubes are 9.2 mm and 5.3 mm, and suppose that the velocity of the air in the large-diameter tube is 4.68 m/s. (a) Find the velocity of the air in the small-diameter tube Glass tubes with very large diameters (20 bis 100 cm), as required for plants of the chemical industry, are produced by centrifugation or blowing. However, only the production of relatively short tube sections of up to one meter, so-called tube shots, is possible Polished Stainless Pipe & Large Diameter Tube. Request a Quote. Appleton Stainless cut its teeth on the manufacture and distribution of stainless steel pipe and large diameter tube from 304L, 316L and 317L. We started getting requests to supply large diameter tube that was polished. Early on the industry only offered sizes up to 4″ polished tube
Borosilicate Glass Sheets. Also known as Pyrex and Schott glass, borosilicate sheets are heat resistant, clear, and have a super-smooth surface. They're used in a range of applications, from high-temperature viewports to 3D printing 5/16 ID x 0.374 OD, 36 to 48 Long, Yellow-Green Epoxyglass Laminate (G10/FR4) Round Tube. MSC# 63409239 Made in USA. In Stock Large diameter carbon fiber tubes are very light and rigid. We have a number of standard sizes ranging from 7.5 inches to 24 inches diameter. Very Large Diameter Carbon Fiber Tubing From 7.5 to 25.4 Diameter. 16.50 ID up to 80 long 7.50 ID up to 60 long Are discounts available on bulk/large quantities of acrylic tube and rod? I needed a larger internal diameter to fit the outlet tube of the Fluval FX6 filter. With a little bit of persuasion, I managed to marry the two, having drilled 12x5.5mm holes in the acrylic tube for the escape of the water. The original glass tube was broken. I. Large Bore Silicone Tube. Silicone Tubing (200) Description. Hardness. From Price (per 5m) Tube Platinum Translucent 21 Outer Diameter 12 Inner Diameter (5m) 60. £13.33. Show 1 Variant
Large diameter tubes are readily available in tubes up to 49.2 in diameter and available in lengths up to 53.1 long or 57.1 long to improve yields on machined components. Lamitex specialty grade PL-72 has been developed for ball bearing retainer cages that demand improved stability and excellent machining characteristics We develop and plan solutions for distinctive application purposes. Glass balls with a diameter starting at 50 µm. Precision glass balls. Glass reflectors (yellow, white, green, red) for road marking with diameters of. 4,5 mm, 8 mm, 10 mm and 15 mm. Cylinder segments, sight glass. Glass tube bends. Glass pistons (metal-coated Clear Acrylic Tubes. Plexiglass Acrylic Tube (clear extruded) is a versatile plastic material that has great impact strength yet is light weight. Plexiglass is 10 times stronger than glass and half the weight. Plexiglass (acrylic) can be used for a number of applications such as signage, displays, aquarium tanks, custom computer cases, and much more at the higher elevation. If the pressure change is large, the insulating glass panes can fracture and/or the sealant holding the glass panes can rupture causing premature seal failure. Breather tubes are defined as large aluminum tubes with a typical inside diameter of approximately 0.125 inches and a typical length of 3 to 6 inches. Breathe Accurately monitor your backyard rainfall with La Crosse's large glass rain gauge. It's weather resistant 8.5-inch glass gauge measures up to 5 inches of rain. Magnified black numbers are high contrast and easy to read, even from a distance. Replacement tube will fit most 2.25-inch decorative rain gauges
Fiberglass Epoxy Tubing (CL) General Purpose Fiberglass Epoxy Tubing. The Alternative to Metal Constructed of fiber reinforced thermoset epoxy resin, fiberglass epoxy tubing (CL) is a lightweight, high strength, corrosion resistant material that can replace carbon steel, chromed steel, stainless steel, aluminum or brass in a variety of applications Milky white frosted silica glass quartz tube 1. high temperature resistance glass can work under 1200°C continuously,and in short time can even work under 1450°C, its softening point is 1650°C,and the melting point is 1650-1800°C. 2.Corrosion resistant, Except hydrofluoric acid, Quartz tube do not react with any acid and base except hydrofluoric acid.the stability is 30 times of the. DESIGN: Simple glass chimney tubes with both end open is the solution to Open Flames policy. It's a perfect add-on to your candlesticks & taper candles or pillar candles with large diameter candle shade. Feature D: USE: Cover up your candlestick holders with candle inside to keep the flame lit without worry of the flame getting blown out La Crosse 704-1522 Rain Gauge Replacement Glass Tube Clear. $14.51 New. AcuRite Easy-Read 12.5 inch Magnifying Rain Gauge. 4.8 out of 5 stars. (89) Total Ratings 89, $5.29 New. AcuRite 00810 5 inch Glass Rain Gauge. 4.8 out of 5 stars Fiberglass Tubes and Rods are heavier and more flexible than carbon of a comparable size. In certain types of applications a more flexible fiberglass tube or rod can be a better solution. They work well in replacing wood dowels in older kites. *Call for Large Quantity Discounts
The other approach I used was to laminate a sleeve over a thin wall (1/16″ or less) aluminum tube mold. The outside diameter of the aluminum tube represents the inside diameter of the tubes to be joined less the thickness of the sleeve. After sanding and polishing the aluminum tube, I wrapped it in fiberglass tape saturated with epoxy Glass Tubing. Tubing made of glass, silica, borosilicate, Flint glass, and fused quartz, in a variety of diameters and lengths; typically used for passage of heated gases or liquids; includes standard wall tubing, and combustion tubes. Max
The glass tube should break cleanly at the scratch. Safety Note: You may wish to wear work It can be used to cut very large diameter tubing in place (such as on a large vacuum manifold) or to cut very accurate short lengths of glass. Robert Hunt has a full description of hot wire cutting on his Teralab web site showing a friend how to cut a tube in half Cutting glass tubing on the lathe (16/11/10) The traditional way of cutting glass tubing is by scoring and snapping it. This technique works well for small-diameter tubing and long lengths of large-diameter tubing where you have sufficient leverage on the tube to break it Lot of 2 18 Long x 4 OD .25 wall Clear Acrylic Plastic Tubes Tubing Cylinders. $30.00. $22.29 shipping. or Best Offer This glass replacement tube fits most backyard decorative rain gauges. Replace your broken or lost rain gauge tube with this easy-to-read glass tube. Scale reads both Inches and Centimenters. Shipping Dimensions: 11.00 H x 3.75 W x 2.00 D. Shipping Weight: 0.4375 lbs
A large diameter evacuated tube solar cooker is a much more reliable off-grid solution for multiple dishes and larger water heating capacities, however still pales to the direct performance of an efficient stove for large water volume production required for cooking, sanitizing safe drinking water, or for cleaning, bathing, or sanitizing cookware Xinxiang Pan Chao Instruments Co., Ltd.is professional boiler sight glass, Quartz glass plate, Quartz ring, Quartz tube, Borosilicate glass, Borosilicate glass tube, Pyrex glass, Glass pipes, Level gauge glass, Flange sight glass supplier or Manufacture China Od300-500mm Large Diameter Clear Quartz Tubes (GE214), Find details about China Quartz Tubeing, Quartz Glass Tube from Od300-500mm Large Diameter Clear Quartz Tubes (GE214) - Lianyungang Hongkang Quartz Products Co., Ltd
China Custome Made Large Diameter Carbon Fiber Tube Pipe, Find details about China Carbon Fiber, Tube from Custome Made Large Diameter Carbon Fiber Tube Pipe - Wei Hai Yan Tuo Composite Material Technology Co., Ltd Glass tubes with an outside diameter range from 100 mm up to 400 mm possible (depending on wall thickness and length). Lengths from 100 mm up to 1,700 mm are possible (depending on outside diameter and wall thickness). Minimum wall thickness of 5 mm is needed Further dimensions available upon request. Requirement: successful technical.
Pack of two test tubes. Made of high-quality borosilicate glass (just like Pyrex or Kimax) that can be heated directly in an open flame. 150 mm tall x 16 mm OD with 14 mm inside diameter. Approximate volume is 22 ml. Uses No. 0 stopper or No. 4 cork Tubing & Rod Glass. Stemmerich, also known as The Tubing Specialist, carries one of the largest inventories of special draw tubing. We also carry a full inventory of standard sizes of borosilicate tubing and rod for a variety of industrial and scientific applications. Tubing ranges from 2 mm O.D. standard wall thickness to 425mm O.D. Check out our Large Diameter Tube Cutter on the supplies page: GLASS ROD AND TUBING CUTTERS >>> Devardi Glass Boro Tubes, Mixed Colors. COE 33. Lengths - 11 to 12 inches. 8 - 18mm OD. LARGE COLORED BORO TUBES 11 - 12 Inches. Also available in lengths up to 4 feet, but shipping rates will be higher..
Simax Glass Tube & Rod. Friedrich & Dimmock Inc. is the largest authorized distributor of Kavalier brand, Simax Glass tubes and glass rod in North America. Simax 33 expansion glass tubing and rod is a low expansion Borosilicate material with high chemical resistance and meets all U.S. Pharmacopeia Standards Phoenix Glass is the manufacturer and provider of glass cigar tubes, closures, and decorating for your packaging needs. We have the capability of manufacturing all sizes with ring gauge sizes of 28 to 60 and lengths from 3″. Glass tubes are available in stock to fit many cigar sizes, including: Robusto, Corona, Toro, and Churchill ISCO Industries offers a complete line of large diameter pipe. Our large diameter products offer all of the benefits that have made traditional solid wall HDPE pipe the industry standard for critical applications. It weighs less, comes in larger sizes, and a variety of options. The reputation of our manufacturers is of the utmost importance Wholesale Nice Quantity Heat Resistance Colored Borosilicate 3.3 Large Diameter Glass Tube. FOB Price: US $ 0.1 / Piece. Min. Order: 100000 Pieces. DANYANG JINGDING GLASSWORKS CO., LTD. Suppliers with verified business licenses. Suppliers reviewed by inspection services. 360° Virtual Tour
E-mail your specialty needs and designs directly to our Glass Center at email@example.com, or call us at (U.S.) 414-438-3850 Extn 2039 (or contact your local sales office) for a custom consultation. Our usual turnaround time is 3-7 working days after receipt of the order SATCO/NUVO 10 Inch Mushroom Glass Shade 9-5/8 Inch Diameter 9-7/8 Inch Fitter 4-9/16 Inch Height Sprayed Inside White (50-331) by SATCO/NUVO. Item No: 50-331 Available Tube Diameter: 3/16″ to 10″ for American size and 2 mm to 250 mm for Metric size. Available Tube Length: From 1″ ( 25mm) To 72″ ( 1828mm). A 20-year lab furnace industry leader, Sentro Tech guarantees our materials to be the best for your particular applications. Contact us for a quote on your quartz tubing and quartz ware today Again this glass will withstand working temperatures of up to 500 degrees C We supply solid borosilicate glass rods from 3mm to 42mm diameter up to 1500mm long in clear or opaque finishes. They come circular or to various profiles including triangular, octagonal and fluted Clear Tube. These tubes are designed to be payload bays in your rocket. Slotted Tube. These are slotted paper tubes that allow through-the-wall fins to be inserted through the tube. For a table of the various tube sizes, check out this page - Tube Sizing in Rocketry. 13mm to 24mm Tubes. 29mm to 54mm Tubes. 56mm to 98mm (4) Tubes
3.94in Diameter X 6.97in Height White Opal Cylinder Glass Shade with 1-5/8in Hole Item GL15853 4in Diameter X 5.25in Height Clear Hammered Cylinder Shade with 1-5/8in Hol Whether your project is big or small, we are bound to have round carbon fiber tubing that suits your needs. As an added bonus we are generally able to ship within one business day on most products listed in our store. We can also cut your tubes to specific lengths with a variety of tolerances, and for many tubes, we offer sanding services China Pyrex Glass Tube manufacturers - Select 2021 high quality Pyrex Glass Tube products in best price from certified Chinese Electronic Cigarette, E Cigarette suppliers, wholesalers and factory on Made-in-China.com High Quality Large Diameter Quartz Pyrex Glass Tube From China Supplier . FOB Price: US $ 0.1 / Piece Min. Order: 100000 Pieces Taixing Zhicheng Glass Co., Ltd., Experts in Manufacturing and Exporting glass tubes and rods of high borosilicate,exlosion-proof glass tubes and 75 more Products. A Verified CN Gold Supplier on Alibaba.com Glass test tubes are an essential part of any lab as they are part of the perfect method to mix, stir or heat samples. All general test tubes are held in stock so large volumes can be available within short periods of time. Top Diameter: 9/16 (.562 or 14mm) Bottom Diameter: 27/64 (.422 or 11mm) Length: 3/4 (.750 or 19mm) Size 3.
Fiberglas™ Insulation FOAMGLAS® Cellular Glass FOAMULAR® XPS FOAMULAR® NGX™ new Thermafiber® Mineral Wool Rainbarrier Continuous Insulation Accessories All Products Enclosure Solutions Large Diameter Fiberglas™ Pipe Insulation. Footer. Insulation. Commercial Commercial Home Commercial Hom Plexiglass Tubes are manufactured by extrusion or casting process, the outside diameter is from 1/10 to 40 inches (From 2.5 to 1000 millimeters), wall thickness is from 1mm to 10mm. The acrylic tube offers superior chemical resistance, UV resistance, and weather ability, they are the right material to replace glass tubes because it is crystal. Glass Tubes. ₹ 100/ piece Get Latest Price. We export an extensive range of Glass Tubes find diverse applications in testing medical laboratory, various hospitals, level gage, X-ray tube, optical, lamp, pharma, vacuum tube stem assembly, and many other industries. These glass tubes are extensively used for storing medical test samples safely Replacement glass rain gauge measurement tube fits a number of our decorative garden rain gauges. Replace your broken or lost rain gauge tube with this durable, attractive, easy-to-read glass tube. Glass tube for rain gauge. Markers measure rainfall in inches and centimeters. Replacement glass rain gauge tube