Tubo De Acero Inoxidable 304/304L 316/316L  Stainless Steel Tube Seamless Tubing¹

Product Description Product DescriptionProduct NameStainless Steel Seamless Pipes /TubesТруба Сталь конструкционная криогеннаяTubería de acero inoxidable sin costuraTubos de A?o Inoxidável sem CosturaTubo INOXIDABLE SIN COSTURACompany Inform1.Name:WENZHOU GUOHAO STEEL., LTD2.Type: ManufacturerMaterialAustenitic:TP304,TP304L,TP304H,TP309S,TP310,TP310S,TP310H,TP316L,TP316Ti,TP317L,TP321,TP321H,TP347H,904L,254SMO,253MAGOST Grade: 08х18н10т,12х18н10т(AISI 321),10х17н13м2т(AISI 316Ti),20х23н18(AISI 310S),06хн28мдт(AISI 904L),08х18н10(AISI304)Duplex Stainless:UNS S31803,UNS S2205,UNS S32750,UNS S32760Nickel Alloy:Incoloy: 800,800H,800HT,825,926,20,28,201,200Inconel :718,600,601,625Hastelloy: C-22,C-276,B-2,B-3High Temperature Alloy:GH3030,GH3039,Cr20Ni80 Monel400,K-500Sources of raw materialsTSINGHSAN,BAOSTEEL,YONGXING etcStandardASTM A312,ASTM A213,ASTM A269,ASTM A511,ASTM A789,ASTM A790ASTM B161 B163 B165 B167 B407 B423 B444 B622 B677 B729 B983EN 10216-5,DIN 17456GB/T 14976,GB13296,GB/T 21833,GB/T 15011,GB/T 15062GOST 9940,GOST 9941SpecificationD(Outer Diameter)6mm-630mm1/8inch-24inchT(Wall Thickness)0.89mm-60mmSCH5,SCH10,SCH20,SCH40,SCH40S,SCH 80S,SCH160,SCHXXS10 BWG, 12 BWG, 14 BWG , 16 BWG, 18 BWG, 20 BWG10 SWG, 12 SWG, 14 SWG , 16 SWG, 18 SWG, 20 SWGL(Length)Random length 5~7mFixed length 6m /6.096m /6.1m/12mAs customer's actual requestSurfaceAnnealing&Pickling,PolishingBright AnnealingSand BlastingShot Blasting / Shot PeeningPipe EndPlain End (PE)Bevelled End (BE)Threaded End (TE)MarkingsGH-STEEL ASTM A312 TP304/304L  2" SCH40S 6MTR  MM HEAT NO.:*********** SMLMarkings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer's private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.Flattening TestFor material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5% of the lot, but in no case less than 2 lengths of pipe.Hydraulic Test or Nondestructive TestEach pipe shall be subjected to the Nondestructive Test or the hydraulic testValue Added ServicesCustomize Length/Pipe sliceBendingPolishing (180#,240#,320#,400#,600#)Shot Blasting / Shot PeeningDrilling/PunchingOil DegreasingPrint Colour CodeDelivery Time1.for ready stock :7 days after receiving the deposit of T/T2.For MTO: 35 days after receiving the  deposit of T/TTrade TermsEXW,FOB,FCA, CFR, CIF etc.Loading PortNingbo/Wenzhou/ShanghaiRemittance methodTT/LC/CASH/DPProduct ParametersChemical Composition & Mechanical Performance For Stainless Steel Seamless Tube PipeANSI/ASME B36.10M B36.19M Dimension Comparison Table For Stainless Steel Seamless Tube PipeOutside DiameterWall Thicknesses Schedule ANSI/ASME B36.10M,B36.19MDN(in)D(mm)SCH5SSCH10SSCH10SCH20SCH30SCH40SSCHSTDSCH40SCH60SCH80SSCHXSSCH80SCH100SCH120SCH140SCH160SCHXXS1/8"10.3-1.24---1.731.731.73-2.412.412.41-----1/4"13.7-1.65---2.242.242.24-3.023.023.02-----3/8"17.1-1.65---2.312.312.31-3.23.23.2-----1/2"21.31.652.11---2.772.772.77-3.733.733.73---4.787.473/4"26.71.652.11---2.872.872.87-3.913.913.91---5.567.821"33.41.652.77---3.383.383.38-4.554.554.55---6.359.091-1/4"42.21.652.77---3.563.563.56-4.854.854.85---6.359.71-1/2"48.31.652.77---3.683.683.68-5.085.085.08---7.1410.152"60.31.652.77---3.913.913.91-5.545.545.54---8.7411.072-1/2"732.113.05---5.165.165.16-7.017.017.01---9.5314.023"88.92.113.05---5.495.495.49-7.627.627.62---11.1315.243-1/2"101.62.113.05---5.745.745.74-8.088.088.08-----4"114.32.113.05---6.026.026.02-8.568.568.56-11.13-13.4917.125"141.32.773.4---6.556.556.55-9.539.539.53-12.7-15.8819.056"168.32.773.4---7.117.117.11-10.9710.9710.97-14.27-18.2621.958"219.12.773.76--7.048.188.188.1810.3112.712.712.715.0918.2620.6223.0122.2310"273.13.44.19-6.357.89.279.279.2712.712.712.715.0918.2625.428.5825.4-12"323.93.964.57-6.358.389.539.5310.3114.2712.712.717.4821.4425.428.5833.3225.414"355.63.964.786.357.929.53-9.5311.1315.09-12.719.0523.8327.7931.7535.71-16"406.44.194.786.357.929.53-9.5312.716.66-12.721.4426.1930.9636.5340.49-18"457.24.194.786.357.9211.13-9.5314.2719.05-12.723.8329.3634.9339.6745.24-20"5084.785.546.359.5312.7-9.5315.0920.62-12.726.1932.5438.144.4550.01-22"558.84.785.546.359.5312.7-9.53-22.23-12.728.5834.9341.2847.6353.98-24"609.65.546.356.359.5314.27-9.5317.4824.61-12.730.9638.8946.0252.3759.54-26"660.4--7.9212.7--9.53---12.7------28"711.2--7.9212.715.88-9.53---12.7------30"7626.357.927.9212.715.88-9.53---12.7------32"812.8--7.9212.715.8817.489.5317.48--12.7------34"863.6--7.9212.715.8817.489.5317.48--12.7------36"914.4--7.9212.715.8819.059.5319.05--12.7------BWG Gauge Weight Chart for Tube Wall thickness (Heat Exchanger Tube & Condensers Tube & Boilier Tube)Outside DiameterStainless Steel Tube Weight (kg/m)Birmingham wire Gauge Conversion from BWG to mm25 BWG22 BWG21 BWG20 BWG19 BWG18 BWG17 BWG16 BWG15 BWG14 BWG13 BWG12 BWG11 BWG10 BWGmminch0.51 mm0.71  mm0.81  mm0.89 mm1.07 mm1.24 mm1.47 mm1.65 mm1.83 mm2.11 mm2.41 mm2.77 mm3.05 mm3.4 mm6.35 1/40.0740.10.1120.1210.1410.1580.1790.1930.206-----9.53 3/80.1150.1560.1760.1920.2250.2560.2950.3240.3510.390.4270.466--12.7 1/2-0.2120.240.2620.310.3540.4110.4540.4960.5570.6180.6850.7330.78815.88 5/8-0.2680.3040.3320.3950.4520.5280.5850.640.7240.8090.9050.9751.05719.05 3/4-0.3240.3680.4030.4790.550.6440.7150.7850.890.9991.1231.2161.32525.41    --0.4960.5430.6480.7460.8760.9761.0741.2241.381.5611.6981.86331.751 1/4---0.6840.8180.9421.1091.2371.3641.5581.76122.182.40138.11 1/2----0.9871.1391.3411.4981.6531.8922.1432.4382.6632.93944.51 3/4----1.1581.3361.5761.7611.9452.2282.5272.8793.1493.48150.82    ----1.3251.5311.8062.022.2322.5592.9053.3143.6284.01463.52 1/2------2.2712.5422.8113.2273.6674.194.5935.0976.23    -------3.0643.393.8944.435.0675.5586.16688.93 1/2-------3.5863.9694.5625.1925.9436.5227.241101.64    -------4.1084.5485.2295.9556.8197.4878.317114.34 1/2---------5.8976.7177.6968.4529.393Standards  and Tolerance for Stainless Steel Seamless Tube PipeSummaryStandardsStandard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger TubesASTM A 213 / A 213MStandard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General ServiceASTM A269 / A 269MStandard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel PipesASTM A312/A312MStandard Specification for Seamless Stainless Steel Mechanical Tubing and Hollow BarASTM A511 / A 511MStandard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General ServiceASTM A789/A789MStandard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel PipeASTM A790/A790MStandard Specification For Seamless Stainless Steel Tubes,cold and hot finishedGOST9941-2022Standard Specification For Seamless Stainless Steel Tube for Pressure purposesEN 10216-5StandardOutside Diameter Tolerance(mm)Thickness ToleranceLength Tolerance (mm)ASTM A213D<25.4±0.1D≤38.1+20%/-0%D≤50.80+3/-0[25.4~38.1]±0.15(38.1~50.8)±0.2D>38.1+22%/-0%D>50.8+5/-0[50.8~63.5)±0.25[63.5~76.2)±0.30[76.2~101.6]±0.38(101.6~190.5]+0.38/-0.64(190.5~228.6]+0.38/-1.14ASTM A312A790[10.29~48.26]+0.4/-0.810.3~73+20% / -12.5%+6/-088.9~457 T/D≤5%+22.5%/-12.5%(48.26~114.30]±0.8088.9~457 T/D>5%+15%/-12.5%(114.30~219.08]+1.6/-0.8508above T/D<5%+22.5%/-12.5%(219.08~457.20]+2.4/-0.8508above T/D>5%+15%/-12.5%ASTM A269A789D<12.7±0.13±15%+3/-0(12.7~38.1]±0.13±10%[38.1~88.9)±0.25+5/-0[88.9~139.7)±0.38[139.7~203.2)±0.76ASTM A270<25.40±0.13±12.5%+3/-0(25.4~50.8]±0.20(50.8~76.2]±0.25(76.2~101.6]±0.38(101.6~139.7]±0.38+5/-0(139.7~203.2]±0.75%(203.2~304.8]±1.25%EN10216-5D3±0.75%/±0.30T3±10%/ ±0.20mmL≤6m+5/-0D4±0.5%/±0.10T4±7.5% / ±0.15mm≥6~12M+10/-0ГОСТ 9941-2022(except 06ХН28МДТ)D<10Normal:±0.30T<0.3Normal:±0.05 mm+15/-0High:±0.03 mmHigh:±0.20(0.3~0.4]Normal:±0.07 mmHigh:±0.05 mmHigher:±0.15(0.4~0.6]Normal:±0.10 mmHigh:±0.07 mm(10~30]Normal:±0.40(0.6~1.0]Normal:±0.15 mmHigh:±0.10 mmHigh:±0.30(1~3]D/S <40Normal:+12.5%/-15%High:±12.5%Higher:±0.20Higher:+12.5%/-10%(1~3]D/S  >40Higher:±15%(30~95]Normal:±1.2%Normal:+12.5%/-15%High:±1%(3~7]D/S <40Normal:±12.5%Higher:±0.8%High:+12.5%/-10%D>95 D/S <40Normal:±1.2%Higher:±10%High:±1%(3~7]D/S >40Normal:+12.5%/-15%Higher:±0.8%High:±12.5%D>95 D/S >40Normal:±1.5%T>7D<325Normal:+12.5%/-10%High:±1.2%High:±10%Higher:±1.0%T>7D>325Normal:+12.5%/-15% High:±12.5%Packaging & ShippingAll of our stainless steel seamless pipe & tubes are packaged as per international standard to prevent any possible damage or loss. By default, we will use thick woven plastic bag to bundle the finished pipes together in batches.For some special pipes & tubes that are vulnerable to dirt, scratches, stress or rough handling, we will suggest wooden case for protection. Kindly note, wooden case can incur extra cost, not only its own cost, but also the increased freight cost, which is especially true for air transportation. For enhanced customer experience, we also provide dedicated package as per your special requirements.CertificationsOur company welcomes inspections conducted by customers directly or through their designated third-party inspection agencies, such as SGS, BV, TUV, DNV, and other industry-recognized organizations. We provide Manufacturer TC (Test Certificate) in accordance with EN 10204/3.1, Raw Materials Certificate, HT/DNT Test Reports, and Third-Party Inspection Reports. Material Testing: All materials undergo rigorous quality testing procedures prior to shipment to ensure compliance with required standards and customer specifications.1. Mechanical Testing2. Hardness Test3. Chemical Analysis - Spectro Analysis4. Positive Material Identification - PMI Testing5. Flattening Test6. Flaring Test7.Intergranular Corrosion (IGC) TestPRODUCT APPLICATIONCompany ProfileWenzhou Guohao Steel was established in 2008. We are ISO 9001:2015 approved manufacturer, having a state-of-the-art infrastructure facility for having smooth production process. It has successfully grown by focusing on serving customers across a range of high technology industries. One of our company strengths is its people, with many colleagues having been with the company from the beginning. This provides our customers with the benefit of a wealth of experience and industry knowledge. Guohao Steel now has the whole of manufactured stainless steel products to add to its already large range of High Performance Nickel Alloys.Guohao Steel adhere to the high standards of integrity and compliance required, including:Environmental standardsHealth and safety standardsEthical trading standardsExport compliance requirementsWe now stock and have direct access to a wide range of other materials, including stainless steels and nickel alloys. We supply and process pipes for numerous key industry sectors, collaborating with both small businesses and large international manufacturers across various countries. Due to our reputation for quality, reliability, and industry approvals, we are a well-regarded supplier in diverse sectors. Our delivery of long-term tangible benefits enables our customers to compete in today's challenging global marketplace.In order to achieve our goals, we are improving our facilities and expanding our machinery to offer broader processing capabilities. Additionally, our investment extends to the growth and development of our teams, which represent our most valuable resource. We aim for our customers to receive the best experience and trust in the expertise, knowledge, and experience of our teams. As we continue looking towards the future, we rely on our core values to guide both decisions and actions.Our AdvantagesFAQ1.Q: Do you provide customized product services?A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.2.Q: Are you a manufacturer or trader?A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes. 3.Q: Can we get the some samples?Is there a charge?A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.4.Q: Can we visit your factory?A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.5.Q: How do you ensure the quality of the product?A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.6.Q: What is your delivery time?A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.7.Q: Can you arrange shipment?A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.8.Q: What if I don't have import experience?A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.

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