If you are looking for seamless stainless steel tubing suitable for high-temperature environments with excellent corrosion resistance, we offer ASTM A268 TP430 Seamless Tubes for High Temperature Service, specifically designed for boilers, heat exchangers, heat treatment equipment, and industrial heating systems.
Our TP430 stainless steel tubing is a ferritic stainless steel with a typical chemical composition of 16–18% chromium (Cr). Its low-carbon design provides excellent oxidation resistance, heat resistance, and good mechanical properties at high temperatures. Our ASTM A268 TP430 seamless tubes are manufactured strictly according to ASTM standards, featuring uniform wall thickness, smooth inner and outer surfaces, and available in diameters ranging from 6mm to 500mm, with lengths customizable to customer requirements.
ASTM A268 TP430 cold-rolled stainless steel tubes offer stable strength and good creep resistance at high temperatures, suitable for long-term use in high-temperature environments of 700–800°C. They also possess excellent weldability, machinability, and corrosion resistance, ensuring safe and reliable equipment operation. The product is widely used in applications such as heat exchanger tube bundles, industrial heating tubes, and boiler heating surfaces.
Stamping Process of ASTM A268 TP430 Stainless Steel Seamless Pipes
The punching process of ASTM A268 TP430 stainless steel seamless pipes follows standard procedures:
◆Inspection and Cutting: Flaw-free raw materials are inspected and cut to precise lengths to ensure defect-free billets.
◆Billet Preheating: Billets are preheated to enhance plasticity, preventing cracking or deformation during punching.
◆Hydraulic Punching: Pipes are formed in a single operation using hydraulic presses with specialized dies.
◆Sizing and Straightening: After punching, pipes are sized and straightened, with strict control of outer diameter and wall thickness tolerances in accordance with ASTM A268 standards.
◆Surface Treatment and Preliminary Testing: Pipes undergo oil and rust removal, followed by initial mechanical performance testing to ensure the quality and structural integrity of the punched products.
| Specifications | : | ASTM A268 / SA 268 |
| Dimensions | : | ASTM, ASME |
| Grades | : | ASTM A268 TP 405, ASTM A268 TP 409, ASTM A268 TP 409S, ASTM A268 TP 410, ASTM A268 TP 410S, ASTM A268 TP 420, , ASTM A268 TP 420, ASTM A268 TP 430, ASTM A268 TP 430F, , ASTM A268 TP 439, A |
| Size | : | 1/4″ (6.25mm) to 8″ (203mm), WT 0.02″ (0.5mm) to 0.5″(12mm) |
| Schedule | : | Sch 20, Sch 30, Sch 40, STD, Sch 80, XS, Sch 60, Sch 80, Sch 120, Sch 140, Sch 160, XXS |
| Specialized in | : | Large Diameter Size |
| Length | : | Single Random, Double Random & Cut Length. |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| End | : | Plain End, Beveled End, Treaded |
Chemical & Mechanical Properties
| ASTM A268 TP430 Chemical Composition (%) | |||||
| C |
Mn |
P | S |
Si |
Cr |
| ≤0.12% | ≤1.00% | ≤0.040% | ≤0.030% | ≤1.00% | 16.0%~18.0% |
Mechanical Properties
| Property | Standard Value (Annealed) |
| Tensile Strength | ≥415 MPa |
| Yield Strength | ≥240 MPa |
| Elongation | ≥20% |
| Hardness | ≤190 HB (Brinell) |
ASTM A268 TP410, TP430, TP439 Stainless Steel Tubing Price per Ton
The price per ton of ASTM A268 TP410, TP430, and TP439 stainless steel tubing depends on factors such as raw material costs (nickel and chromium content), size and wall thickness, surface finish, order quantity, and international market demand.
ASTM A268 Test Requirements
The tubes shall have a hardness number that will not exceed the prescribed Brinell and Rockwell hardness values, TP410, TP430 and TP439 max Rockwell hardness 90, Test report required certification conform to Specification A1016/A1016M.
Several mechanical tests shall be conducted, namely:
Hydrostatic or nondestructive electric test.
Tension test;
Flaring test (for seamless tubes);
Flange test (for welded tubes);
Hardness test;
Reverse flattening test;
Intergranular corrosion test; and
GNEE has nearly 18 years of extensive experience in the production of seamless stainless steel pipes. Every pipe undergoes rigorous testing, including dimensional, surface, PMI, eddy current, or hydraulic testing. Only high-quality pipes are packaged and delivered to customers worldwide. Our pipe products cover both imperial and metric sizes, with outer diameters ranging from 1.58 mm to 108 mm. Special sizes can be customized.
All pipes are carefully packaged before shipment, coated with a protective layer, and secured with steel straps. They are then loaded into export-standard wooden crates or containers to minimize the risk of damage during transportation. We offer flexible delivery options, with a typical delivery time of 15 to 30 days, depending on the order size and specifications.
