Estamos comprometidos a brindar un servicio integral para productos de tubería de acero a clientes de todo el mundo.
Stainless steel pipe is a hollow long round steel, widely used in petroleum, chemical, medical, food light industry, mechanical
instruments, mechanical structural parts and other industrial conveying pipeline.In addition, when bending and torsion strength is thesame, the weight is light, so it is also widely used in the manufacture of mechanical parts and engineering structures. Also commonlyused as furniture, kitchenware and so on.
The below table shows the chemical composition of the most used A312 Stainless Steel Pipes:
| A312 GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | ||||
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | |||
| TP321 | S3210 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP321H | S32109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP347 | S3470 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 |
MECHANICAL PROPERTIES
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| ) | |||||
| TP304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| TP316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
Military Specification stainless Pipe & Tubing
| Specification | Type | Analysis | Service |
| MIl-P-1144 | Seamless Or Welded | Stainless-All Grades | High Temperature & Pressure |
| MIl-P-24691/3 | Seamless | Stainless-All Grades | High Temperature & Pressure |
| MIl-T-8504/AMS-5567 | Seamless Or Welded | Type 304 | Corrosion & Hydraulic |
| MIl-T-8606/AMS-5560 | Seamless | 321,347,304L Stainless | Corrosion Applications |
| MIl-T-8808/AMS-5570 | Seamless | 321 & 347 Stainless | Corrosion Applications |
| MIl-T-16286 | Seamless | Class C Type 321 Or 347 | High Pressure Steam & |
| Super Heater Generator | |||
| MIl-T-16286 | Seamless | Class E & F Chrome Moly | High Temperature & Pressure |
| MIl-T-23226 | Seamless | Type 304, 304L, 347 | High Pressure Steam & |
| Super Heater Generator |
| SPEC. NO. | TITLE | SCOPE |
| ASTM A 249 | Superheater, Welded Austenitic Boiler, Heat-Exchanger, and Condenser Tubes. | Pressure tubes, made from austenitic, (Types 304, 304H, 304L, 305, 309, 310,316, 316H, 317, 321, 321H, 347, 316L, 347H, 348, 348H, and XM grades.) |
| ASME SA 249 | ||
| ASTM A 213 | Seamless Ferritic and Superheater, Austenitic Stainless Steel Boiler, Heat-Exchanger, and Condenser Tubes. | Pressure tubes, made from 16 grades of austenitic and 12 grades of ferritic Cr-Mo Alloy Steel. |
| ASME SA 213 | ||
| ASTM A 269 | Seamless and Welded Austenitic Tubing for General Service. | 13 grades of austenitic stainless,steel tubing for general corrosion- resisting and high-temperature service. (Types 304, 304L, 316, 316L, 317, 321,347, 348 and XM grades). |
| ASTM A 268 | Seamless and Welded Ferritic SS Tubing for General Service. | 15 grades of ferritic tubing for general corrosion resistance and high temperature service. (Types 329, 429, 405, 409, 410, 430, 430Ti, 443, 446, XMs & others). |
| ASME SA 268 | ||
| ASTM A312 | Stainless Steel Seamless Pipes and Welded Austenitic Pipes. | Austenitic intended for high temperature and general corrosive services. 22 grades are covered. |
| ASME SA 312 | ||
| ASTM A 270 | Seamless and Welded Austenitic Sanitary Tubing. | Austenitic ss intended for use in diary and food industry in sizes upto and including 4 inch in outside diameter. |
| ASTM A 376 | Seamless Austenitic Pipe for High-Temp Central-Station Service. | Austenitic Pipes intended for high temperature and general corrosive services. Better surface than A312 pipe. |
| ASME SA 376 | ||
| ASTM A 358 | Electric-Fusion-Welded Austenitic Chromium-Nickel Altoel for High-Temperature | For corrosion and high temperature services, normally not less than 8 inch nominal diameter. Types 304, 304L, 316, 309, 310, 321, 347, 316L, 304H, 316H. |
| ASME SA 358 | ||
| ASTM A 511 | Seamless Pipes Mechanical Tubing. | Primarily round tubing. 27 grades are covered for mechanical application. |
| ASTM A 409 | Welded Large Outside Diameter Light-Wall Austenitic Chromium-Nickel . AS Pipe for Corrosive or High-Temperature Services. | Nominal diameter 14-30 in. in Schedules SS and 105. Types 304, 304L, 309, 310, 316, 317, 321, 347, 348, 316L. |
| ASME SA 409 | ||
| ASTM A 450 | General Requirements for Alloy Steel Tubes. | Common Requirements for ASTM tubular specification. |
| ASME SA 450 | ||
| ASTM A 554 | Welded Pipes MechanicalTubing. | Nineteen grades are covered for mechanical application. Squares, Rounds, rectangles and special shapes are included. |
| ASTM A 530 | General Requirements for Ferritic Alloy, Carbon and Austenitic Alloy Steel Pipe. | Common requirements for ASTM pipe specification as listed. |
| ASME SA 530 | ||
| ASTM A 632 | Seamless and Welded Austenitic Tubing for General Services. Small Diameter. | 9 grades of austenitic tubing for general high-temperature and corrosion-resisting services. |
| AMS 5557 | Steel Tubing, Heat Resistant and Corrosion 18 Cr; 11 Ni; Ti (SAE30321) Hydraulic. | Annealed type 347 hydraulic line tubing. |
| Type 1—Seamless | ||
| Type 2—Welded & Drawn | ||
| AMS 556 | Steel Tubing, Heat Resistant and Corrosion 18 Cr; 11 Ni; (Cb + Ta) (SAE 30347) Hydraulic. | Annealed type 347 hydraulic line tubing. |
| Type 1—Seamless | ||
| Type 2—Welded & Drawn | ||
| AMS 5558 | Welded, Steel Tubing, Heat Resistant and Corrosion 18 Cr; 11 Ni, (Cb + Ta) (SAE 30348) Thin Wall. | High pressure ducting, wall thickness more or less. Weld bEAD controlled, X-ray. |
| AMS 5559 | Welded, Steel Tubing, Corrosion and Heat Resistant 18 Cr, 10 Ni, Ti, (SAE 30321) Thin Wall. | High pressure ducting, wall thickness more or less. Weld bead controlled, X-ray. |
| AMS 5561 | Welded, Steel Tubing and Drawn High Pressure Hydraulic. | For parts and assemblies such as fluid lines subject to requiring corrosion and high pressure |
| AMS 5562 | Steel Tubing, Seamless and Corrosion Resistant 21 Cr; 6 Ni; 9 Mn Annealed. | Parts and assemblies requiring both heat resistance and corrosion, and having higher strength than 18-8 types. |
| AMS 5560 | Steel Tubing, Seamless and Corrosion Resistant 19 Cr; 9 Ni (SAE 30304). | Annealed 304 type aircraft hydraulic line tubing. (Not subject to high pressure). Structural. |
| AMS 5566 | Steel Tubing, Seamless or Welded Corrosion Resistant 19 Cr, 10 Ni (SAE 30304) High Pressure Hydraulic. | Cold drawn 304 type, high pressure, aircraft Type 1 Seamless Type 2 Welded Drawn |
| AMS 5565 | Steel Tubing, Welded Corrosion Resistant 19 Cr, 9 Ni (SAE 30304). | Annealed 304 type aircraft hydraulic line tubing.(Not subject to high pressure). |
| AMS 5567 | Steel Tubing, Seamless or Welded Corrosion Resistant 19 Cr, 10 Ni (SAE 30304) Hydraulic, Solution Treated. | Fluid lines subject to medium high pressure require corrosion resistance. Annealed (1) Seamless (2) Welded & Drawn |
| AMS 5570 | Steel Tubing, Seamless and Heat Corrosion Resistant 18 Cr, 10 Ni, Ti tSAE 30321). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when such parts are welded during fabrication. Requires oxidation resistance up to approximately 1500°F, but useful at that temperature only when stresses are low. |
| AMS 5571 | Steel Tubing, Seamless Heat Corrosion Resistant 18 Cr, 11 Ni(Cb + Ta)‹SAE 30347). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when such parts are welded during fabrication. Requires oxidation resistance up to approximately 1500°F, but useful at that temperature only when stresses are low. |
| AMS 5572 | Steel Tubing, Seamless and Heat Corrosion Resistant 25 Cr, 20 Ni, (SAE 30310). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when welded during fabrication. Requires oxidation resistance up to approximately 2000°F, but useful at that temperature only when stresses are low. |
| AMS 5574 | Seamless Type 309S | Parts & assemblies requiring both heat and corrosion resistance up to 2000°F, especially welded assemblies. |
| Annealed Structural. | ||
| AMS 5575 | Steel Tubing, Seamless and Heat Corrosion Resistant 16 Cr, 11 Ni, (Cb + Ta) (SAE 30347). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when such parts are welded during fabrication. Requires oxidation resistance up to approximately 1500ºF, but useful at that temperature only when stresses are low. |
| AMS 5573 | Seamless Type 316 | Parts & assemblies requiring both heat and corrosion resistance up to 1600ºF. |
| Annealed Structural. | ||
| AMS 5576 | Steel Tubing, Welded, Corrosion and Heat Resistant 18 Cr, 10 Ni, Ti (SAE 30321). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when such parts are welded during fabrication. Requires oxidation resistance up to approximately 1500°F., but useful at that temperature only when stresses are low. |
| A EBS 5577 | Steel Tubing, Welded and Heat Corrosion Resistant 25 Cr, 20 Ni, (SAE 30310). Annealed Structural. | Parts and assemblies requiring both heat and corrosion resistance especially when welded during fabrication. Requires oxidation resistance up to approximately 2000°F, but useful at that temperature only when stresses are low. |
| AMS 5639 | Seamless Type 304 | Cold Finished Mechanical Tube |
| Rockwell 90B max Hardness Corrosion Embrittlement Capability | ||
| AMS 5646 | Seamless Type 347 | Cold Finished Mechanical Tube |
| Rockwell 90B max Hardness | ||
| Corrosion Embrittlement Capability | ||
| AMS 5647 | Seamless Type 304L | Cold Finished Mechanical Tube |
| Rockwell 90B maxHardness | ||
| Corrosion Embrittlement Capability | ||
| AMS 5645 | Seamless Type 321 | Cold Finished Mechanical Tube |
| Rockwell 90B max Hardness | ||
| Corrosion Embrittlement Capability | ||
| AMS 5648 | Seamless Type 316 | Cold Finished Mechanical Tube |
| Rockwell 90B max Hardness | ||
| MIL-T-5695 | Steel Tubing, Corrosion Resistant(304), Cold Drawn (1/2 or 1/4 hard Smls or W & D. | Intended for use in fabrication of aircraft structural parts requires a high fegree of resistance to corrosion. |
| MIL-T-6737 (T 321) | Steel Tubing, Corrosion and Heat Resistant (18-8 Stabilized), Welded. Annealed. | Type 347 and 321 tubing intended to use in the manufacture of exhaust stacks, blast tubes, manifolds, ring collector and similar applications where a weldable heat and corrosion resisting steel is required or for use at 800º – 1500°F. |
| MIL-T-6845 (T 304) | Steel Tubing, Corrosion Resistant 304) Aerospace Vehicle Hydraulic ³/ Hard, Weldsd Drawn, Seamless. | Intended to use in high pressdre hydraulic and pneumatic systems in which corrosion resistant materials are required. The tubing is not suitable to use in applications assembled by welding or brazing or exposed to temperatures higher 800°F, because of impaired resistance to corrosion, where subsequent anneal not possible. |
| MIL-T-8506 (T 304) | Steel Tubing, Corrosion Resistant (304) Annealed. Seamless, Welded. | Intended to use in the fabrication of aircraft parts requiring a high degree of resistance to corrosion. Not to be used in hydraulic high pressure control systems. |
| MIL-T-8504 (T 304) | Steel Tubing, Corrosion Resistant 18-8) Annealed, Aircraft Hydraulic Seamless, Welded. | Intended to use in hydraulic high pressure and pneumatic systems in which corrosion resistant materials are required. This tubing is of low strength and higher ductility than tubin Specification MIL-T-6845. May be used to MIL-T-6845 tubing but heavier wall thicknesses must be used. Same qualifications brazing, regarding welding & temperature. |
| MIL-T-8606 | Steel Tubing, Corrosion Resistant 18-8 Annealed. Welded & Drawn. | Intended to use in application which require a high degree of resistance to corrosion or to temperatures in the range of 800°F.—1500°F or in application which involve welding. Suitable for use in tank automotive equipment for mechanical and hydraulic applications. |
| (T 304L) | ||
| (T 321) | ||
| (T 347) | ||
| MIL-T-8808 | Steel Tubing, Corrosion Resistant (18-8 Stabilized), Aircraft Hydraulic Quality. Annealed. Welded, Seamless & Drawn. | Intended to use in hydraulic high pressure and pneumatic systems where and heat resistance are required and in which welding or brazing may be involved during fabrication. Resists oxidation at temperatures to 1200°F, but is useful at that temperature only when stresses are low. |
| (T 321) | ||
| (T 347) | ||
| MIL-T-8973 | Steel Tubing, Corrosion Resistant, Aerospace Vehicle Hydraulic System. ³/ Hard. Welded, Seamless & Drawn. | Intended to use in hydraulic high pressure and pneumatic systems corrosion and heat resistance are required and in which welding or brazing may be involved during fabrication. Suitable for use in temperatures to 1200°F, when stresses are low. |
| (T304L) | ||
| (T 316L) | ||
| (T 321) | ||
| (T 347) | ||
| MIL-P-1144 | Seamless or Welded. Annealed. | Pipe is intended for high temperature and hydraulic or other pressure service under general corrosive conditions. |
| (T 304) (T 304L) | ||
| (T 316) (T 316L) | ||
| (T-321) (T 347) |
