Complaint
For the steel pipe under fluid pressure to carry out hydraulic test and ray flaw detection to test its pressure ability and quality, under the specified pressure does not leak, wet or expansion for qualified, some steel pipe according to the standard or the requirements of the side test, flaring test, flattening test.
Standard:ASTM A312 Austenitic Stainless Steel Pipes for high-temperature and general corrosive service.
ASTM A213 for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A269 Austenitic Stainless Steel Tubes for General Service
ASTM A270 for Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubes
Grade:
TP304,TP304L,TP304H,TP316,TP316L,TP316Ti,TP309,TP310S,TP321,TP321H,
TP347, TP347H, TP405, TP410, TP430
Sizes: 1/8" - 36" +
Schedules: S/5s - XXS
Services: Bending - Cutting - Grooving - Polishing - Threading
Surface treatment: Industrial tubes Annealed and pickled, Sanitary tubes polished 180 grit, 240 grit, 400 grit
Austenitic steel
| TP304 | General-purpose stainless steel with good corrosion resistance for most applications. Used for: Bar rails, Boat railings, Canopy supports, Chemical processing equipment, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings (architectural), Traffic barriers, Water pipes. |
| TP304H | Higher carbon content than 304L, for increased strength, particularly at elevated temperatures. |
| TP304L | Chemical plant and food processing equipment, where freedom from sensitization is required in plate thicknesses TP316/316L |
| TP316/316L | Used where higher corrosion resistance is required. Boat railings, Canopy supports, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings, Street (urban) furniture, Textile tubing, Traffic barriers, Water pipes. |
| TP316H | Similar oxidation resistance to TP 316. Main areas of application: Heat exchangers, furnaces, chemical and petrochemical plant. |
| TP321 | Heat exchanger tubing, Chemical processing tubing, Pressure tank tubing. Suitable for heat resisting applications to 800°C. |
| TP321H | This is the high carbon version of TP 321 which ensures greater creep resistance. Behaves much the same as TP 321 in oxidation resistance. Main applications: Heat exchangers, furnaces, boilers in chemical and petrochemical plant |
| TP316Ti | A titanium stabilized version of 316 used where good resistance to intergranular corrosion and high temperature strength is required. |
| TP317 | Chemical processing tubing, Dyeing equipment, Ink manufacturing equipment, Pulp & paper manufacturing equipment |
| TP347HFG | Mainly used for boilers in the termal power plant, reheaters and superheaters |
Super-Austenitic steel
TP904L
High resistance to general corrosion in e.g. sulphuric and acetic acids, crevice corrosion, stress corrosion cracking, pitting in chloride bearing solutions.
Ferritic and Martensitic Steel
| TP405 | Used for applications where hardening upon cooling from high temperatures must be avoided. Has excellent long-time stability up to 1200°F. |
| TP410 | General purpose grade for use in mildly corrosive environments |
| TP430 | Mechanical & structural tubing, Architectural tubing, Heat exchanger tubing, Condensers, Re-heaters, Evaporators. |
| S31803 | Typically used in heat exchangers, gas scrubbers, fans, chemical tanks, flowlines, marine and refinery applications. |
| S32750 | Used in oil & gas, chemical process, power industries. At that heat-exchangers are main application. |
| S31254 | With high levels of chromium, molybdenum, and nitrogen is especially suited for high-chloride environments such as brackish water, seawater and other high-chloride process streams. |
Duplex: 2205/S31803, S32750, S32760
Manufacturing process:
Stainless steel welded tube is a steel pipe made of steel plate or strip steel that is crimped and formed by a unit and a mold. The production process of welded steel pipe is simple, the production efficiency is high, the variety and specification are many, and the equipment investment is small, but the general strength is lower than that of seamless steel pipe.
Processing for Stainless Steel Welded Pipe
| Bar & Structural Cutting | Products cut include Round Bar, Flat bar, Hex bar, Square bar, Tubing and Hollow Bar, Pipe, Angles, channels, Beams and Tees. Thickness range is 1/16″ to 28″diameter |
| Production Cutting | Stainless can provide production cutting for product diameters up to 4″. |
| Pipe Threading | Available thru 2″ in Diameter/All schedules |
| Tubular Polishing | Products polished included all tubular products, with OD & ID polishing available, Round Bar, Square Bar, Hex & Flat bar, Angles, Uneven Leg Angles, beams, and other shapes. |
Welded Stainless Steel Pipe Tolerances
| NPS Designator | Permissible Variations in Outside Diameter | |
| Over In. | Under In. | |
| 1/8 to 1-1/2, incl | 1/64 (0.015) | 1/32 (0.031) |
| Over 1-1/2 to 4, incl | 1/32 (0.031) | 1/32 (0.031) |
| Over 4 to 8, incl | 1/16 (0.062) | 1/32 (0.031) |
| Over 8 to 18, incl | 3/23 (0.093) | 1/32 (0.031) |
Nominal Wall Thickness:
| NPS Designator | Outside Diameter in. | Schedule 5S in. | Schedule 10S in. | Schedule 40S in. | Schedule 80S in. |
| 1/4 | 0.540 | 0.065 | 0.088 | 0.119 | |
| 3/8 | 0.675 | 0.065 | 0.091 | 0.126 | |
| 1/2 | 0.840 | 0.065 | 0.083 | 0.109 | 0.147 |
| 3/4 | 1.050 | 0.065 | 0.083 | 0.113 | 0.154 |
| 1.0 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 |
| 1 1/4 | 1.660 | 0.065 | 0.109 | 0.140 | 0.191 |
| 1 1/2 | 1.900 | 0.065 | 0.109 | 0.145 | 0.200 |
| 2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 |
| 2 1/2 | 2.875 | 0.083 | 0.120 | 0.203 | 0.276 |
| 3 | 3.500 | 0.083 | 0.120 | 0.216 | 0.300 |
| 3 1/2 | 4.000 | 0.083 | 0.120 | 0.226 | 0.318 |
| 4 | 4.500 | 0.083 | 0.120 | 0.237 | 0.337 |
| 5 | 5.563 | 0.109 | 0.134 | 0.258 | 0.375 |
| 6 | 6.625 | 0.109 | 0.134 | 0.280 | 0.432 |
| 8 | 8.625 | 0.109 | 0.148 | 0.322 | 0.500 |
| 10 | 10.750 | 0.134 | 0.165 | 0.365 | 0.500 |
| 12 | 12.750 | 0.156 | 0.180 | 0.375 | 0.500 |
| ITEMS | Stainless steel decorative pipe | |||
| Stainless welded pipe(round) | Stainless square pipe | Stainless rectangle pipe | Stainless oval pipe | |
OD range | 3-219MM | 10MM*10MM--100MM*100MM | 20*10MM--100*200MM | 5*48MM 38*15MM 39.8*20.8MM 44*16MM etc.. |
| WT range | 0.12-4MM | 0.16-4MM | 0.16-4MM | 0.23-4MM |
| Length range | Normal length 3-6M,but can be custom-made as requirements. | |||
| Grade | 304/301/201/202/316/430/410/420/409etc. | |||
| Surface treatment | Matte(usually used as industrial pipe)/Mirror finish(decoration pipe) | |||
Johnson screen/ore screen mesh | Grade:201/202/205/304/316/321 etc... Shape:Cylindric,flake Cylinder Diameter:29-1000mm Slot size:0.5-1.0mm in usual, can be customized Filter type:from outside to inside Length:2.9m or5.8m in usual to fit the container End connection: Male/female threaded couplings, weld rings/plain beveled |
Wire-wrapped screen/strainer | Grade:201/202/205/304/316/321 etc... Size:2-16inch Slot size:0.5-1.0mm in usual, can be customized Length:2.9m or5.8m in usual to fit the container End connection:Male/female threaded couplings, weld rings/plain beveled |
FAQ
Q: How long is your delivery time?
A: Depends on pipes size and quantity. 7-10 days for stocked steel pipe and 20-40 days for new productions according to quantity.bowl shape stainless steel smoking pipe screens
Q: Do you provide samples? Is it free or extra? 201 Stainless Steel Pipe used for Food and Chemical Industry
A: Yes,we could offer free steel pipe sample for your evaluation. stainless steel pipe fitting
Q: What is your terms of payment? steel pipe
A: TT payment way, TT+LC, or 100% sight LC and usance L/C for 30-120days,the specific payment should be addressed by further discussion.
