304 Stainless Steel Welded Pipe
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of 304 stainless steel welded pipe in China. If you're going to wholesale high quality 304 stainless steel welded pipe made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
The Chromium content promotes the Material's considerable Resistance to the effects of corrosion and oxidation. The Stainless Steel Alloy Resists most Oxidizing Acids and will withstand ordinary Rusting though this does not mean that the steel will not tarnish over time. The steel needs to be Cold Worked to generate Higher Tensile Strength. For Stainless Steel Sections which are Welded Heavily, Post-weld annealing may be necessary to provide maximum Corrosive Resistance.
We use different International standards to Manufacture these Pipes some are ASTM A / ASME SA213, A249, A269, A312, A358, CL.I- V and UNS S30400 is the Material Grade of these Pipes. The SS Pipes & Tubes are available in Standard Dimensions Size varies from ½" NB to 18"NB; Diameter- 6.00 mm to 914.4 mm, Thickness varies from 0.3 mm to 50 mm and can be customized as per Client's Requirement. Round, Square, Rectangular, Coiled and Seamless, ERW, Welded, Fabricated, CDW is Shapes and Form of Pipes respectively. SS 304 Pipes are manufactured by the Advanced Machines and Treated by the Heat Treatment Process to attain High Strength, Corrossion Resistance and Surface Finish by Polish and Passivation.
304 Stainless Steel Pipes and Tubes Range
| Specification | ASTM A249, ASTM A269, ASTM A213, ASTM A312, ASTM A358, ASME SA249, ASME SA269, ASME SA213, ASME SA312, ASME SA358 EN 10216-5, EN 10217-7 |
| Pipes Other Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| Pipes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| Pipes Form | Round Pipes, Square Pipes, Rectangular Pipes |
| Outer Diameter Size | SEAMLESS - 1/2" NB TO 18" NB WELDED / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| Wall Thickness | SCH 20, 30, 80, 60, 120, 160, and 140, STD, XS, and XXS (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Pipes Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiographic Examination, Stabilizing Heat Treatment, Intergranular corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| Dimension Tolerance | All Pipes is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Application | Oil and Gas Industry, Power Plant, Chemical Industry, Refineries, Construction, Marine Application, Medical and Surgical Industry, Food Processing, Distilleries & Sugar Mills, Fats & Fertilizer, Cement, Paper, Pumps, Ship Builders etc. |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment / Annealed / Bright Annealed / CNC Laser Cutting |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS Etc. |
At the start of the welded pipe is manufacturing process so called slabs or billets are cast in a steel mill. Dependent on the external dimensions and wall thickness there are different methods of producing welded Pipes and Tubes: Electric Resistance Welding (ERW), Fusion Welding (EFW) and Double Submerged Arc Welding (DSAW). In the ERW and EFW manufacturing process welded Pipes are formed by hot or cold rolling plate and welding the seam. In order to keep the outside (O.D.) surface of a welded pipe smooth and uniform a cutting tool called scarfing blade is used to remove the weld flash. Scarfing from the inside (I.D.) welded flash is also possible. With a heat treating at the end of the manufacturing process the weld zone of the steel pipe can be made less visible. Due to the weld seam lower operating pressures are stated in accordance with ASME compared to Seamless Pipes . In general welded Tubes possess tighter dimensional tolerances than Seamless Pipes and are less costly if produced in same quantities
FAQ:
Q:What are your company's main products ?
A: Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, nickel alloys, etc.
Q: How do you control quality ?
A: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS,Alibaba Verified.
Q: What are the advantages of your company ?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.
Q: How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.
Q: Can you provide sample ?
A: Yes. We can provide the small samples in stock for free, as long as you contact us.Customized samples will take about 5-7 days.
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