ASTM213 Tp309 Tp316 Stainless Steel Seamless Pipes for Heat Exchanger/Boiler

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry, Building Material
• Certification: CE, ISO9001
• Model NO.: ASTM213 TP309 TP316 Stainless Steel Seamless Tube
• Length: Max 50m
• Material: 304 Stainless Steel
• Outer Diameter: 3.18-810mm
• Type: Seamless Pipe
• Wall Thickness: 0.2-40mm
• Steel Grade: Tp316/TP304/Tp410/Tp310
• Technique: Hot Rolled/Cold Drawn
• Shape: Round/Customized
• Process: Polished/Solution Treatment
• Condition: Hot Finished/Cold Finished
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10, 000, 000 Kgs/Year

Product Description

Product Description

 

ASTM A213 Stainless Steel Seamless Pipe

1. Standard Specification

ASTM A213 is a widely - recognized standard that covers seamless ferritic and austenitic alloy - steel and stainless - steel boiler, superheater, and heat - exchanger tubes. This standard is crucial as it sets the quality and performance benchmarks for these pipes, which are used in high - temperature and high - pressure applications. It defines requirements for the chemical composition, mechanical properties, dimensions, and manufacturing processes of the seamless pipes. Compliance with ASTM A213 ensures the pipes' reliability and safety in demanding industrial environments.

2. Chemical Composition

The chemical composition of ASTM A213 stainless - steel seamless pipes varies depending on the grade. Here are some common grades and their typical chemical compositions:

Grade	C (%)	Si (%)	Mn (%)	P (%)	S (%)	Cr (%)	Ni (%)	Mo (%)
TP304	≤ 0.08	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.030	18.0 - 20.0	8.0 - 10.5	-
TP316	≤ 0.08	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.030	16.0 - 18.0	10.0 - 14.0	2.0 - 3.0
TP321	≤ 0.08	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.030	17.0 - 19.0	9.0 - 12.0	-

Carbon content affects the strength and corrosion resistance. Lower carbon in grades like TP304, TP316, and TP321 helps in reducing carbide precipitation, which can otherwise lead to intergranular corrosion. Silicon and manganese are used as deoxidizers and also contribute to the steel's strength. Chromium is the key element for corrosion resistance, forming a passive oxide layer on the surface. Nickel improves the austenitic structure's stability and enhances corrosion resistance further. Molybdenum in grades like TP316 increases resistance to pitting and crevice corrosion.

3. Mechanical Properties

The mechanical properties also vary by grade:

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)
TP304	≥ 515	≥ 205	≥ 35	≤ 201
TP316	≥ 515	≥ 205	≥ 35	≤ 201
TP321	≥ 515	≥ 205	≥ 35	≤ 201

The minimum tensile strength of 515 MPa for these common grades indicates their ability to withstand high pulling forces. The yield strength of at least 205 MPa ensures they can resist permanent deformation under normal operating loads. The high elongation percentage of 35% shows good ductility, which is beneficial for manufacturing processes such as bending and forming. The hardness limit helps in ensuring the pipes' workability and resistance to wear.

4. Dimensions

4.1 Outer Diameter

ASTM A213 stainless - steel seamless pipes are available in a wide range of outer diameters. The standard covers sizes from 12.7 mm (0.5 in) to 610 mm (24 in). The outer diameter tolerances are as follows:

Outside Diameter (mm)	Tolerance (mm)
12.7 - 48.26	± 0.20
48.26 - 114.30	± 0.38
114.30 - 219.08	± 0.51
219.08 - 323.85	± 0.76
323.85 - 406.40	± 1.02
406.40 - 610.00	± 1.52

4.2 Wall Thickness

The wall thickness of the pipes also has specific tolerances based on the outer diameter:

Outside Diameter (mm)	Tolerance (%)
12.7 - 114.30	+ 15 / - 12.5
114.30 - 610.00	+ 12.5 / - 10

4.3 Length

The pipes can be supplied in random lengths, typically ranging from 4 m to 12 m, or cut - to - length as per customer requirements. For cut - to - length pipes, the length tolerances are:

Cut Length (m)	Tolerance (mm)
≤ 6	+ 6 / - 0
6 - 9	+ 9 / - 0
9 - 12	+ 12 / - 0

5. Manufacturing Process

ASTM A213 stainless - steel seamless pipes are produced using the seamless process. Initially, a solid billet of stainless - steel is heated and pierced to form a hollow shell. This shell is then further processed through hot - rolling or cold - drawing operations to achieve the desired outer diameter and wall thickness. After the forming process, the pipes may undergo heat - treatment such as solution annealing for austenitic grades. Solution annealing helps in homogenizing the microstructure, relieving internal stresses, and enhancing the corrosion resistance and mechanical properties of the pipes.

6. Applications

ASTM A213 stainless - steel seamless pipes are used in a variety of industries due to their excellent properties:

• Power Generation: In boilers, superheaters, and heat - exchangers in power plants, these pipes are used to carry high - temperature and high - pressure steam and hot water. Their high - temperature strength and corrosion resistance are crucial for reliable operation.

• Petrochemical Industry: They are used in heat - transfer equipment, reactors, and pipelines. The ability to resist corrosion from various chemicals and high - temperature environments makes them suitable for petrochemical applications.

• Food and Beverage Industry: Due to their hygienic and corrosion - resistant properties, these pipes are used in food and beverage processing equipment, such as heat - exchangers and piping systems for transporting liquids.

• Pharmaceutical Industry: In pharmaceutical manufacturing, where cleanliness and corrosion resistance are of utmost importance, ASTM A213 pipes are used in equipment like reactors, distillation columns, and piping for transporting process fluids.

7. Testing

To ensure the quality and performance of ASTM A213 stainless - steel seamless pipes, several tests are carried out:

• Chemical Analysis: Samples are taken from the pipes to verify the chemical composition using techniques like spectroscopy. This ensures that the pipes meet the specified chemical requirements for each grade.

• Mechanical Tests: Tensile tests are performed to measure the tensile strength, yield strength, and elongation. Hardness tests, such as Brinell or Rockwell hardness testing, are carried out to assess the material's hardness. Bend tests and flattening tests are also conducted to evaluate the formability of the pipes.

• Dimensional Inspection: The outer diameter, wall thickness, and length of the pipes are measured using precision measuring instruments to ensure they are within the specified tolerances. Non - destructive testing methods like ultrasonic testing or radiographic testing are used to detect internal defects in the pipes.

• Corrosion Testing: Depending on the application, corrosion tests such as the salt - spray test or the nitric - acid corrosion test may be performed to evaluate the pipes' corrosion resistance.

8. Marking

ASTM A213 stainless - steel seamless pipes are marked in accordance with the standard requirements. The marking typically includes the standard designation (A213), the grade (e.g., TP304, TP316), the manufacturer's name or trademark, the size (outer diameter and wall thickness), and the heat number or lot number. This marking is essential for traceability throughout the supply chain and for quality control purposes, allowing for easy identification and tracking of the pipes from production to end - use.

 

 

Processing of Production